How many grams of CO₂ will be produced from 7.00 g of C₃H₈ and 98.0 g of O₂?

When Ca(OH)2 and HNO3 are mixed, the dominant components in the solution are H2O, Ca2+, OH-, and NO3-

When one mole of Ca(OH)2 and four moles of HNO3 are mixed in water, the dominant components in the solution would be H2O, Ca2+, OH-, and NO3-. The balanced chemical equation for the reaction is:

Ca(OH)2 + 2HNO3 → Ca(NO3)2 + 2H2O

The reaction between Ca(OH)2 and HNO3 results in the formation of calcium nitrate (Ca(NO3)2) and water (H2O), while the hydroxide ions (OH-) and nitrate ions (NO3-) remain in solution.

https://brainly.com/question/31977298

#SPJ2

Answer:

2 ATP

Explanation:

glycolysis is the beginning of cellular respiration and it yielded net ATP of two produced from 1,3 bisphosphoglycerate conversion to 3-phosphoglycerate (2 ATP) and conversion of phosphoenolpyruvate to pyruvate ( 2ATP). One will recall that 2 ATP had been expended in the conversion of glucose to glucose-6-phosphate, and in the conversion of fructose-6-phosphate to fructose -1,6- bisphosphate. Other product of glycolysis are 2 NADH, 2 Pyruvate that may go into kreb  cycle for further energy production depending on the organism type of respiration.

The net gain of energy in glycolysis from one molecule of glucose is 2 ATP molecules. Glycolysis metabolizes one glucose to form two pyruvate molecules while generating a net gain of 2 ATP and 2 NADH.

The net gain of energy in glycolysis from one molecule of glucose is 2 ATP (Adenosine Tri-Phosphate) molecules. Glycolysis is the process in which one glucose molecule is broken down to form two molecules of pyruvate (also known as pyruvic acid). The process also generates 2 molecules of ATP as net gain, along with 2 NADH molecules. However, because the input also includes the use of 2 ATP molecules in the 'energy investment phase', the net gain is only 2 ATP.

https://brainly.com/question/14089531

#SPJ3

Answer:

B

Explanation:

when elements reacts to form a compound the elements properties changes completely. This happens due to the fact that a chemical reaction has taken place. In a chemical change new substances are formed and the properties of the products differ entirely from that of the reactant.

for example if hydrogen combines with oxygen to form water, the property of hydrogen differs from oxygen and also both differs chemically when compared to water.

When elements combine to form compounds, their properties change completely.

When elements combine to form compounds, their properties change completely.

For example, sodium (a highly reactive metal) and chlorine (a toxic gas) combine to form sodium chloride, which is table salt that is neither reactive nor toxic. The properties of the elements in a compound are no longer the same as the properties of the individual elements. The combination of elements in a compound results in the formation of new substances with distinct properties. Therefore, option B) their properties change completely, is the correct answer to the question.

https://brainly.com/question/11838894

#SPJ6

Answer:

D. a scientific explanation that is agreed on by all scientists and is no longer adjusted as new evidence is found

Explanation:

Scientific theory is an explanation that has been repeatedly tested and verified in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of results

Answer:

"B"an explanation for something that is frequently adjusted as evidence is collected

The law of conservation of mass was developed from past observations, it is not subject to experimentation and revision, and it does not explain why mass is conserved or predict future observations.

A) True. The law of conservation of mass was developed from past observations. It was formulated based on multiple experiments and observations by scientists.

B) False. The law of conservation of mass is not subject to experimentation and revision. It is accepted as a fundamental principle in chemistry and holds true under all conditions.

C) False. The law of conservation of mass does not explain why mass is conserved. It is a statement that describes the behavior of mass in chemical reactions, but the underlying reasons are explained by other scientific principles and theories.

D) False. The law of conservation of mass does not predict future observations. It is a statement that describes an observed behavior in chemical reactions.

https://brainly.com/question/15189105

#SPJ3

Answer:

C

Explanation:

when an ion has a 1- charge it gains 1 electron. when an atom is neutral, it has the same protons as electrons.

Answer:

The volume of air at where the pressure and temperature are  52 kPa, -5.0 ºC is [tex] 3.64 m^3[/tex].

Explanation:

The combined gas equation is,

[tex]\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}[/tex]

where,

[tex]P_1[/tex] = initial pressure of gas = 104 kPa

[tex]P_2[/tex] = final pressure of gas = 52 kPa

[tex]V_1[/tex] = initial volume of gas = [tex]2.0m^3[/tex]

[tex]V_2[/tex] = final volume of gas = ?

[tex]T_1[/tex] = initial temperature of gas = [tex]21.1^oC=273+21.1=294.1K[/tex]

[tex]T_2[/tex] = final temperature of gas = [tex]-5.0^oC=273+(-5.0)=268 K[/tex]

Now put all the given values in the above equation, we get:

[tex]\frac{104 kPa\times 2.0m^3}{294.1 K}=\frac{52 kPa\times V_2}{268 K}[/tex]

[tex]V_2=3.64 m^3[/tex]

The volume of air at where the pressure and temperature are  52 kPa, -5.0 ºC is [tex] 3.64 m^3[/tex].

The question pertains to how a mass of air's volume changes with altitude in the subject of Physics, using the ideal gas law which relates pressure, volume, and temperature. Actual calculation could not be completed due to the ambiguity in the question's phrasing.

The subject in question relates to Physics, specifically the concepts of gas laws and how changes in pressure, temperature, and volume affect gases. The question involves applying the ideal gas law to determine how the volume of a mass of air changes when altitude affects temperature and pressure.

If we consider the ideal gas law, which states that PV/T = constant for a given mass of air, and if we ignore the effect of humidity and assume the atmospheric air behaves as an ideal gas, we can relate the initial and final states of the mass of air by the equation (P1V1)/T1 = (P2V2)/T2. To find the new volume V2, rearrange the equation to V2 = (P1V1T2)/(P2T1). With all values, including pressures, volumes, and temperatures, it is necessary to convert temperatures to Kelvin before using the formula.

To compute the problem described, we would convert 21.1 ºC to Kelvin by adding 273.15, which is 294.25K, and similarly convert -5.0 ºC to Kelvin, which would give 268.15K. Then, we'd calculate the new volume V2 knowing P1, V1, T1, P2, and T2. However, since the question 'To what volume will the region expand when it has risen to altitude where the pressure and temperature are (a) 52 kPa, -5.0 ºC (True or False)' lacks a clear predicate and the expected answer format (True or False doesn't fit the question being asked), we cannot calculate V2 without additional information or rephrasing of the question.

From what we have below, we can see the complete and full question.

Chlorofluorocarbons (CFCs) such as CF2Cl2 are refrigerants whose use has been phased out because of their destructive effect on Earth's ozone layer. The standard enthalpy of evaporation of CF2Cl2 is 17.4 kJ/mol, compared with delta Hvaporization = 41 kJ/mol for liquid water. How many grams of liquid CF2Cl2 are needed to cool 122.1 g of water from 48.6 to 27.6 degrees Celsius? The specific heat of water is 4.184 J/(g x degrees Celsius).

Answer:

74.56 g

Explanation:

Given that;

The standard enthalpy of evaporation of CF₂Cl₂ = 17.4 kJ/mol

Δ [tex]H_{vapourization}[/tex] = 41kJ/mol (for liquid water)

grams of liquid CF₂Cl₂ (i.e Mass of CF₂Cl₂ required to absorb the heat from water) = ???

mass( in gram) of water = 122.1g

Temperature (T₁) = 48.6°C

Temperature (T₂) = 27.6°C

ΔT = (T₂ - T₁) = 27.6° - 48.6° = -21°C

Specific heat of water (C) = 4.18 J/g*deg*°C

From the parameters given, let's first find and decide the quantity of heat absorbed from the given amount of water in the system.

Q (quantity of heat) = mCΔT

= 122.1 g × 4.18 J/g*deg*°C × 27.6°C

= -10728.1944 J

= -10.73 kJ

∴ -10.73 kJ is the amount of heat given to CF₂Cl₂ by the water.

NOTE: The negative sign illustrate the heat given by the water in the system)

Since that is  known, we can easily find the mass of CF₂Cl₂ needed to cool 122.1 g of water.

Since the molar mass of  CF₂Cl₂ = 120.91 g /mol

∴ Mass of CF₂Cl₂  needed to cool 122.1g of water = [tex]\frac{10.73kJ}{17.4kJ}*120.91g)

= 74.56g

Answer:

Sum of the coefficients is 3, in both sides (reactant & product)

Explanation:

HCl and Ca(OH)₂ react in a neutralization reaction.

It is called neutralization because we can produce H₂O. It always occurs when you react an acid with a base.

The equation for this is:

2HCl + Ca(OH)₂  → CaCl₂ +  2H₂O

Sum of the coefficients is 3, in both sides (reactant & product)

Final answer:

The balanced molecular equation for the reaction between hydrochloric acid and calcium hydroxide is HCl(aq) + Ca(OH)2(aq) → CaCl2(aq) + 2 H2O(l), with a sum of coefficients equal to 5.

Explanation:

The balanced molecular equation for the reaction of hydrochloric acid (HCl) with calcium hydroxide (Ca(OH)2) is:

HCl(aq) + Ca(OH)2(aq) → CaCl2(aq) + 2 H2O(l)

To balance the equation, you must ensure that the number of atoms of each element on the reactant side is equal to the number of atoms of that element on the product side. In this reaction, two hydrochloric acid molecules are needed to react with one calcium hydroxide molecule to produce one molecule of calcium chloride and two molecules of water.

The sum of the coefficients in this balanced equation is 1 + 1 + 1 + 2 = 5.

Answer:

Hi

The high dipole moment of water and its ease in forming hydrogen bonds make it an excellent analysis. A molecule is soluble in water if it can interact with its molecules through hydrogen bonds or ion-dipole interactions.

With anions that have oxygen they can form hydrogen bonds, since oxygen acts as their acceptor. The attraction of the anion on the water dipole must be taken into account. The same goes for Cl-F, which have solitary electron pairs and can act as hydrogen bridge acceptors. On the other hand, cations such as Na+, K+, Ca++ or Mg++ are surrounded by water molecules to which they are joined by dipole ion interactions while oxygen atoms are oriented towards the catión.

Explanation:

Answer:

The balanced redox is:

14 H⁺ + Cr₂O₇²⁻ + 3Sn²⁺ → 3Sn4⁺  + 2Cr³⁺  + 7H₂O

So the coefficient for the H⁺ is greater than 4 (option E)

Explanation:

This is the redox reaction:

Cr₂O₇²⁻ (aq) + Sn²⁺ (aq)  →  Cr³⁺ (aq) + Sn⁴⁺(aq)

First of all, we must determine the half reactions:

In dycromate, Cr acts with +6 in the oxidation state → Cr cation has +3 in product side - Oxidation state, has decreased so this is the reduction.

In reactant side Sn cation acts with +2 → In product side Sn acts with +4

The oxidation state has increased, so this is the oxidation.

Cr₂O₇²⁻  → Cr³⁺

We have to add 2, to Cr in reactant side, and as we are in adicid medium we add water in the opposite side of oxygen. The same amount of oxgen, that we have.

Cr₂O₇²⁻  → 2Cr³⁺ + 7H₂O

Finally, as we have 14 H in product side, we must add 14 H⁺ to the reactant side. Cr+⁶ in dycromate to change to Cr³⁺, gained 3 e⁻, but we have 2 Cr, so in total the Cr gained 6e⁻. The balanced half reaction is:

14 H⁺ + Cr₂O₇²⁻ + 6e⁻ → 2Cr³⁺  + 7H₂O

Sn²⁺ to change the oxidation state, to +4 had to release electrons:

Sn²⁺ →  Sn4⁺  + 2e⁻

The electrons are unbalanced, so we must to multiply the half reactions:

(14 H⁺ + Cr₂O₇²⁻ + 6e⁻ → 2Cr³⁺  + 7H₂O) x1

(Sn²⁺ →  Sn4⁺  + 2e⁻ ) x3

And we sum both:

14 H⁺ + Cr₂O₇²⁻ + 6e⁻ + 3Sn²⁺ → 3Sn4⁺  + 6e⁻  + 2Cr³⁺  + 7H₂O

To balance the redox equation in acidic solution, follow these steps: Write the unbalanced equation, identify the oxidation and reduction half-reactions, balance the atoms and charges, multiply the oxidation half-reaction, combine the half-reactions, and balance the equation by dividing through by common factors. The correct coefficient for the H+ ion is 2.

To balance the redox equation in acidic solution, we need to follow these steps:

Upon balancing the equation, we find that the correct coefficient for the H+ ion is (B) 2.

Answer:

Carbon Dioxide is an Infrared Radiation Absorber. The (CO2) molecules also emits the absorbed infrared (IR) radiation energy. The photon energy from the infrared radiation causes the CO2 molecule to vibrate. Only some of its vibrational modes absorb infrared radiation

Explanation:

Its linear structure is considered when working with the formula to calculate the number of molecular vibrational modes. It has 3n - 4 vibrational modes, where n is the number of atoms in a compound of CO2

With 3 atoms, CO2 has

3n−5=4 types or patterns of vibration

1. The symmetric stretch

2. The asymmetric stretch

3. The bend

The symmetric stretch vibrational mode is ir-inactive.

The asymmetric stretch is ir-active as it results in changes in dipole moment

The bend is ir-active as well as it results in a change in dipole moment too.

At the molecular level as the CO2 molecules absorb photons of the infrared radiation, the atoms in the CO2 molecules increase their vibration as the bonds between the atoms bend and stretch.

The question is incomplete, the complete question is;

The infrared spectrum above represents the absorption of certain wavelengths of radiation by molecules of CO2. Which of the following best explains what occurs at the molecular level as the CO2 molecules absorb photons of the infrared radiation?

The infrared spectrum of molecules is based on changes in the vibrational energy levels within the molecule.

Infrared radiation causes bonds to vibrate. The nature of the vibration may be stretching or bending.

So, when CO2  molecules are irradiated with infrared radiation, at the molecular level, CO2 molecules absorb photons of the infrared radiation, the atoms in the CO2 molecules increase their vibration as the bonds between the atoms bend and stretch.

Learn more: https://brainly.com/question/4348492

Answer:

c.Baking Soda (sodium bicarbonate)

Explanation:

The Arrhenius theory was introduced introduced by Swedish scientist named Svante Arrhenius in 1887.

According to the theory, acids are the substances which dissociate in the aqueous medium to produce electrically charged atoms ( may be molecule). Out of these species furnished, one must be a proton or the hydrogen ion, [tex]H^+[/tex].

Base are the substances which dissociate in the aqueous medium to produce electrically charged atoms ( may be molecule). Out of these species furnished, one must be a hydroxide ion, [tex]OH^-[/tex].

a. Lemon juice contains citric acid which is an acid.

b. Vinegar contains acetic acid which is an acid.

c. Baking Soda contains sodium bicarbonate and is a base.

Thus, c is the answer.

pH is defined as the negative logarithm of the concentration of hydrogen ions.

Thus,  

pH = - log [H⁺]

pH scale generally runs from 1 to 14 where pH = 7 represents neutral medium, pH < 7 represents acidic medium and pH > 7 represents basic medium.

d. Substance with pH 7 represents neutral solution.

Answer: option B. Black ice is an example of a physical change

Explanation:

Black ice forming on a road or sidewalk is an example of a physical change because it involves a transformation in the physical state of water (from liquid to solid) without changing its chemical composition.

The correct answer is option B.

Black ice forms when a thin layer of water on a sidewalk or road freezes after the temperature drops below the freezing point. This process involves a physical change, not a chemical change. Here's why:

Physical Change:

A physical change is a transformation in which the substance's chemical composition remains the same, but its physical properties, such as state of matter or appearance, are altered. Black ice is formed when liquid water (H₂O) undergoes a physical change as it freezes into solid ice. During this process, water molecules reorganize themselves into a crystalline structure, but the chemical identity of the molecules (H₂O) remains unchanged. Thus, black ice is still composed of H₂O molecules, making it a physical change.

Chemical Change vs. Physical Change:

In a chemical change (chemical reaction), the substances involved undergo a transformation at the molecular or atomic level, leading to the creation of new substances with different chemical compositions. In contrast, physical changes do not alter the chemical composition of the substances; they only affect their physical properties.

In the case of black ice, no new substances are formed, and the chemical composition (H₂O) remains constant throughout the process. Therefore, it is a clear example of a physical change.

Therefore, from the given options the correct one is B.

For more such information on;Black ice

https://brainly.com/question/30797733

#SPJ3

Answer:

Prokaryotes and eukaryotes use the same codons for translation.

Explanation:

Gene is the functional segment of the DNA and can be inherited. The particular gene codes for the particular protein that determines the morphology of the organisms.

The translation process is responsible for the expression of protein in prokaryotes and eukaryotes. The basic process of translation is quite similar. Genetic code is same in both prokaryotes and eukaryotes as the code is universal in nature and responsible for the production of protein in bacteria.

Consider this statement as True or false

Answer: True

Explanation:

Yes, it is possible that the gene responsible for the fluroscence in the jelly fish is extracted and inserted in the bacteria then the bacteria will also start glowing like jellyfish.

This is possible because the basic machinery is same in case of prokaryotes and eukaryotes.

The manipulation is known as genetic engineering by which the gene of interest from one organism is inserted in other organism.

Final answer:

The contact force is caused by the charged particles that make up one atom pushing or pulling on the charged particles that make up other atoms. This is option B.

Explanation:

The contact force is caused by the charged particles that make up one atom pushing or pulling on the charged particles that make up other atoms.

This is option B.

When two objects are in contact, such as when you push against a wall or walk on the ground, the atoms in your body and the atoms in the object you are in contact with exert electromagnetic forces on each other, resulting in the contact force.

The other options, A, C, D, and E, do not accurately describe the cause of the contact force.

Answer:

1-butanol has higher boiling point mainly due to presence of hydrogen bonding.

Explanation:

Diethyl ether is a polar aprotic molecule due to presence of polar C-O-C moiety. Hence only dipole-dipole intermolecular force exist between diethyl ether molecules.

1-butanol is a polar protic molecule due to presence of C-OH moiety. Therefore dipole-dipole force along with hydrogen bonding exist between 1-butanol molecules.

So, intermolecular force is higher in 1-butanol as compared to diethyl ether. Hence more temperature is required to break intermolecular forces of 1-butanol to boil as compared to diethyl ether.

So, 1-butanol has higher boiling point mainly due to presence of hydrogen bonding.

Answer:117 degree Celsius

Explanation: this is due to the hydrogen bonding between the OH of the alcohol

Answer:

54.2 g of Ca(OH)₂

Explanation:

Let's determine the moles of solute, we should need

Molarity . volume (L) = moles

Let's convert 600 mL to L

600 mL/ 1000 = 0.6L

1.22 mol/L . 0.6L = 0.732 moles

Finally we must convert the moles to mass ( moles . molar mass)

0.732 mol . 74.08 g/mol = 54.2 g

Answer: 54.2 g Ca(OH)2

Explanation: Molarity is moles of solute / L solution

First convert mL to L

600 mL x 1L / 1000 mL = 0.6 L

Find moles of Ca(OH)2

n= M x L

= 1.22 M x 0.6 L

= 0.732 moles Ca(OH)2

Convert moles to mass using its molar mass of Ca( OH)2 = 74 g

0.732 moles Ca(OH)2 X 74 g Ca(OH)2 / 1 mole Ca(OH)2

= 54.2 g Ca(OH)2

The atomic mass of gallium if gallium has two naturally occurring isotopes with the following masses and natural abundances: Ga-69, 68.9256 amu 60.1%, and Ga-71, 70.9247 amu 39.9%, is 69.7376073 amu. Hence, option d is the correct answer.

Given the isotopes and their masses and abundances:

Ga-69 with a mass of 68.9256 amu and an abundance of 60.1%.

Ga-71 with a mass of 70.9247 amu and an abundance of 39.9%.

Atomic mass ([tex]M_a_t_o_m_i_c[/tex]) using the formula.

[tex]M_a_t_o_m_i_c[/tex]=([tex]M_i_s_o_t_o_p_e_1[/tex] ×abundance1)+([tex]M_i_s_o_t_o_p_e_2[/tex]×abundance2)

[tex]M_a_t_o_m_i_c[/tex]=(68.9256amu×0.601)+(70.9247amu×0.399)

[tex]M_a_t_o_m_i_c[/tex]=41.413512amu+28.3240953amu

[tex]M_a_t_o_m_i_c[/tex]=69.7376073amu

Rounded to the nearest hundredth, the calculated atomic mass of gallium is approximately 69.73 amu. The closest option is "d that is 69.7 amu," which is approximately the same as the calculated atomic mass of gallium. Hence, option d is the correct answer.

Learn more about the atomic mass of gallium here.

https://brainly.com/question/23822720

#SPJ12

The atomic mass of gallium, considering its two naturally occurring isotopes, Ga-69 and Ga-71, with masses of 68.9256 amu and 70.9247 amu at abundances of 60.11% and 39.89% respectively, is approximately 69.7171 amu.

The atomic mass of an element is calculated considering all its naturally occurring isotopes. In this case, gallium has two stable isotopes, Ga-69 and Ga-71, with respective masses and natural abundances stated in the question. Here are the steps to calculate the atomic mass of gallium:

Firstly, we multiply the mass of each isotope by its natural abundance:

For Ga-69:

68.9256 amu * 60.11 / 100 = 41.4292 amu

For Ga-71:

70.9247 amu * 39.89 / 100 = 28.2879 amu

Then, we add the results to get the atomic mass:

41.4292 amu + 28.2879 amu = 69.7171 amu

So, the atomic mass of gallium is approximately 69.7171 amu.

For more such question on  atomic mass visit:

https://brainly.com/question/30390726

#SPJ3

Answer:

Oxidation process

Explanation:

Oxidation is the transfer of electrons from an atom, molecule, or ion to another atom, molecule, or ion in a chemical reaction.

Oxidation is said to have taken place when the oxidation status of a atom, molecule, or ion is increases.

Oxidation process is said to include

Addition of oxygen atom or Electronegative atoms to another atom, molecule, or ion

Loss of one or more electrons by a atom, molecule, or ion

Increase in the oxidation number of a atom, molecule, or ion

Loss of a hydrogen or Electropositive atoms

Answer:there is visible blue black coloration

Explanation:starch is a polysaccharide,it is composed of only glucose combined by glycosidic bonds.starch is majorly an insoluble carbonhydrate.

Starch consist of two distinguishable polysaccharide fraction namely amylose and amylopectin.

The iodine test is used to check for the presence of starch.

It gives a blue black coloration for amylose which is present in potato.

But in amylopectin,it gives a reddish coloration.

Answer:

H must pair with Fluorine, Oxygen, or Nitrogen

Explanation:

water has polar covalent bonds, the intermolecular forces are hydrogen bonds, London and Dipole forces

Final answer:

The formation of hydrogen bonds requires hydrogen atoms and polar covalent bonds. Hydrogen atoms in polar covalent bonds have a slightly positive charge and are attracted to neighboring negative charges, forming weak interactions known as hydrogen bonds. Hydrogen bonds occur between water molecules and are responsible for many of water's unique properties.

Explanation:

The formation of hydrogen bonds requires hydrogen atoms and polar covalent bonds.

When polar covalent bonds containing hydrogen form, the hydrogen in that bond has a slightly positive charge because hydrogen's electron is pulled more strongly toward the other element and away from the hydrogen. Because the hydrogen is slightly positive, it will be attracted to neighboring negative charges. When this happens, a weak interaction occurs between the hydrogen's 6 from one molecule and the molecule's 6 charge on another molecule with the more electronegative atoms, usually oxygen. Scientists call this interaction a hydrogen bond. This type of bond is common and occurs regularly between water molecules. Individual hydrogen bonds are weak and easily broken, however, they occur in very large numbers in water and in organic polymers, creating a major force in combination. Hydrogen bonds are also responsible for zipping together the DNA double helix.

Answer : The temperature in Kelvin is, 290 K

Explanation :

S.I : It is known as the international System of Units. It is defined as a scientific method to express the magnitude of the several basics units.

There are seven basic units in the system from which the other units are derived.

The seven base unit are, meter for length, kilogram for mass, second for time, ampere for current, kelvin for temperature, mole for amount of substance and candela for intensity.

The conversion used for the temperature from degree Celsius to Kelvin is:

[tex]K=273.15+^oC[/tex]

where,

[tex]K[/tex] = temperature in Kelvin

[tex]^oC[/tex] = temperature in centigrade

As we are given the temperature in degree Celsius is, 17

Now we have to determine the temperature in Kelvin.

[tex]K=273.15+^oC[/tex]

[tex]K=273.15+(17^oC)[/tex]

[tex]K=290.15K\approx 290K[/tex]

Therefore, the temperature in Kelvin is, 290 K

Answer:

is the process in which two smaller nuclei combine to form a larger nucleus.

Explanation:

Nuclear fusion -

It is the type of reaction , where two or more lighter nuclei combines to form a larger nuclei , with large amount of energy released in the form of heat and light is referred to as a nuclear fusion .

The process of fusion is exactly opposite of the nuclear fission , where a single nucleus is broken down into many smaller nuclei , and is used in the nuclear power plants to generate energy.

In the nuclear fusion process , lighter nucleus like nickel - 62 and iron - 56 are used .

Answer:

Nuclear fusion can be defined asva reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles ( neutrons or protons). The difference in mass between the reactants and products is manifested as either the release or absorption of energy . This difference in mass arises due to the difference in atomic " binding energy " between the atomic nuclei before and after the reaction. Fusion is the process that powers active or " main sequence " stars , or other high magnitude stars.

A fusion process that produces nuclei lighter than iron-56 or nickel-62 will generally release energy. These elements have relatively small mass per nucleon and large binding energy per

nucleon . Fusion nuclei lighter than these releases energy (an exothermic process), while fusion of heavier nuclei results in energy retained by the product nucleons, and the resulting reaction is endothermic .

Nuclear fusion generates electricity (as a proposed form of power) by using heat from nuclear fusion reactions. In a fusion process, two lighter atomic nuclei combine to form a heavier nucleus, while releasing energy. The devices designed to harness this energy are known as fusion reactors.

Answer:

B. Household ammonia.

Explanation:

NH₃ is a base, so the solution always will be basic.

NH₃ takes the proton from the water. In conclusion we have free OH⁻ in medium, that's why the solution is basic.

NH₃ + H₂O → NH₄⁺  +  OH⁻

- HCl + H₂O → H₃O⁺  + Cl⁻

This reaction makes an acid solution, cause the H₃O⁺

- Vinegar is a compound made of acetic acid.

CH₃COOH  + H₂O  ⇄  H₃O⁺  +  CH₃COO⁻

This reaction also makes an acid solution, cause the H₃O⁺

- Pure water makes neutral solution. It is not acid, neither basic.

2H₂O ⇄  H₃O⁺  +  OH⁻

Answer:

B. False

Explanation:

Solution -

A solution is referred to be a uniform mixture of various components ,  where the components are classified as solute and solvent .

The components can easily be segregated on the basics of the amount of the component , i.e. ,

And ,

For example ,

In the solution of sugar and water , where 1 tablespoon of sugar is dissolved in 100 mL of water ,

and ,

To convert SO2 and H2Se from a liquid or solid to a gas, the intermolecular forces that need to be overcome are dipole-dipole bonding and London dispersion forces. Ion-dipole bonding and hydrogen bonding are not required.

To convert SO2 and H2Se from a liquid or solid to a gas, certain intermolecular forces must be overcome. These forces include:

For these substances, Ion-dipole bonding and hydrogen bonding are not relevant as SO2 and H2Se do not comprise ions or specific hydrogen connections.

https://brainly.com/question/34620632

#SPJ3

Final answer:

For SO₂ and H₂Se, the intermolecular forces that need to be overcome to change to a gas are dipole-dipole interactions and London dispersion forces.

Explanation:

To convert a substance from liquid or solid to gas, it is necessary to overcome the intermolecular forces that hold the molecules together in the condensed phase. For SO₂, the primary intermolecular forces are dipole-dipole interactions and London dispersion forces. SO₂ is a polar molecule with a significant dipole moment, leading to dipole-dipole attractions, and all molecules, including polar ones, exhibit London dispersion forces. In the case of H₂Se, although the molecule is polar, there is no hydrogen directly bonded to a highly electronegative atom, thus it does not have hydrogen-bonding. However, H₂Se does exhibit London dispersion forces and dipole-dipole interactions due to its polar nature. Therefore, the intermolecular forces that must be overcome for SO₂ and H₂Se are options (c) London dispersion forces and (d) dipole-dipole bonding.

Answer:

10.1 g of Al are formed

Explanation:

The reaction is:

2AlCl3 --> 2Al + 3Cl2

So 2 moles of aluminun chloride decompose into 2 moles of Al and 3 moles of chlorine.

Ratio is 2:2.

Let's convert the mass of salt into moles (mass / molar mass)

50 g / 133.34 g/mol = 0.374 moles.

As the ratio is 2: 2, if I have 0.374 moles of salt, I would produce the same amount of Al, just 0.374.

Let's convert the moles to mass

(Mol . molar mass)

0.374 mol . 26.98 g / mol = 10.1 g of Al are formed

Ξ

28.99 grams of aluminium metal can be produced when 50.0 grams of aluminium chloride decompose.

To solve this problem, we will use stoichiometry, which involves the following steps:

1. Write down the balanced chemical equation:

[tex]\[ 2\text{AlCl}_3 \rightarrow 2\text{Al} + 3\text{Cl}_2 \][/tex]

2. Calculate the molar mass of aluminium chloride (AlCl3) and aluminium (Al):

- The molar mass of Al is approximately 26.98 g/mol.

- The molar mass of AlCl3 is calculated as follows:

[tex]\[ \text{Molar mass of AlCl}_3 = \text{Molar mass of Al} + 3 \times \text{Molar mass of Cl} \] \[ \text{Molar mass of AlCl}_3 = 26.98 \text{ g/mol} + 3 \times 35.45 \text{ g/mol} \] \[ \text{Molar mass of AlCl}_3 = 26.98 \text{ g/mol} + 106.35 \text{ g/mol} \] \[ \text{Molar mass of AlCl}_3 = 133.33 \text{ g/mol} \][/tex]

3. Convert the mass of AlCl3 to moles:

[tex]\[ \text{Moles of AlCl}_3 = \frac{\text{Mass of AlCl}_3}{\text{Molar mass of AlCl}_3} \] \[ \text{Moles of AlCl}_3 = \frac{50.0 \text{ g}}{133.33 \text{ g/mol}} \] \[ \text{Moles of AlCl}_3 \approx 0.375 \text{ mol} \][/tex]

4. Use the stoichiometric ratio from the balanced equation to find the moles of Al produced:

The balanced equation shows that 2 moles of AlCl3 produce 2 moles of Al. Therefore, the moles of Al produced are the same as the moles of AlCl3 that decomposed, since the ratio is 1:1.

5. Convert the moles of Al to grams:

[tex]\[ \text{Mass of Al} = \text{Moles of Al} \times \text{Molar mass of Al} \] \[ \text{Mass of Al} = 0.375 \text{ mol} \times 26.98 \text{ g/mol} \] \[ \text{Mass of Al} \approx 9.969 \text{ g} \][/tex]

However, since the stoichiometry of the reaction gives us 2 moles of Al for every 2 moles of AlCl3, we must account for this in our mass calculation. Therefore, we multiply the mass of Al by the ratio of the moles of Al produced to the moles of AlCl3 that reacted:

[tex]\[ \text{Mass of Al} = 9.969 \text{ g} \times \frac{2 \text{ mol Al}}{2 \text{ mol AlCl}_3} \] \[ \text{Mass of Al} = 9.969 \text{ g} \times 1 \] \[ \text{Mass of Al} \approx 9.969 \text{ g} \][/tex]

Since the stoichiometry does not change the mass calculation (because the ratio is 1:1 for Al and AlCl3), the mass of Al produced is approximately 9.969 grams. However, this is not the final answer, as we need to consider significant figures.

6. Round the final answer to the appropriate number of significant figures, which in this case is three (since the mass of AlCl3 is given to three significant figures):

[tex]\[ \text{Mass of Al} \approx 10.0 \text{ g} \][/tex]

However, upon re-evaluating the calculation, it seems there was a mistake in the conversion of moles of AlCl3 to moles of Al. Since the stoichiometry is 2 moles of AlCl3 to 2 moles of Al, the moles of Al should be equal to the moles of AlCl3, which is 0.375 moles. Therefore, the correct mass of Al is calculated as follows:

[tex]\[ \text{Mass of Al} = 0.375 \text{ mol} \times 26.98 \text{ g/mol} \] \[ \text{Mass of Al} = 28.985 \text{ g} \][/tex]

Rounding to three significant figures, we get:

[tex]\[ \text{Mass of Al} \approx 28.99 \text{ g} \][/tex]

Answer:

6) For 0.04392 moles BaSO4 we need 0.02196 moles Na2SO4

To produce 0.02196 moles Ba2SO4 and 0.04392 moles Na2SO4

7)  For 16.08 moles LiOH we'll have 8.04 moles H2SO4 produced.

We need 8.04 moles Li2SO4 and 8.04 moles H2O

8) For 0.0206 moles silvernitrate we'll hace 0.0206 moles silver

9) For 0.014 moles of Cu we'll have 0.014 moles Cu(NO3)2

Explanation:

6. Barium sulfate and and sodium sulfate react in a double displacement reaction. If the  reaction starts with 10.25 grams of barium sulfate what are the products and how many moles  of each product is produced?

Step 1: Data given

Mass of BaSO4 = 10.25 grams

Molar mass = 233.38 g/mol

Step 2: The balanced equation

2BaSO4 + Na2SO4 → Ba2SO4 + 2NaSO4

Step 3: Calcuate moles BaSO4

Moles BaSO4 = 10.25 grams / 233.38 g/mol

Moles BaSO4 = 0.04392 moles BaSO4

Step 4: Calculate moles

For 2 moles BaSO4 we need 1 mol Na2SO4 to produce 1 mol Ba2SO4 and 2 moles NaSO4

For 0.04392 moles BaSO4 we need 0.04392/2 = 0.02196 moles Na2SO4

To produce 0.02196 moles Ba2SO4 and 0.04392 moles Na2SO4

7. Calculate the moles of Li2SO4that would be needed to produce 385 g of LiOH.

Step 1: Data given

Mass of LiOH = 385 grams

Molar mass of LiOH = 23.95 g/mol

Step 2: The balanced equation

Li2SO4 + 2H2O → 2LiOH + H2SO4

Step 3: Calculate moles LiOH

Moles LiOH = 385.0 grams / 23.95 g/mol

Moles LiOH = 16.08 moles LiOH

Step 4: Calculate moles

For 1 mol Li2SO4 we need 2 moles H2O to produce 2 moles LiOH and 1 mol H2SO4

For 16.08 moles LiOH we'll have 8.04 moles H2SO4 produced.

We need 8.04 moles Li2SO4 and 8.04 moles H2O

8. Silver nitrate reacts with copper in a single displacement reaction. To produce copper (1) nitrate and silver. If 3.50 g of silver nitrate are reacted with excess copper. How many mole of  silver would be produced?

Step 1: Data given

Mass of AgNO3 = 3.50 grams

Molar mass of AgNO3 = 169.87 g/mol

Step 2: The balanced equation

Cu + 2AgNO3 → Cu(NO3)2 + 2Ag

Step 3: Calculate moles AgNO3

Moles AgNO3 = 3.50 grams / 169.87 g/mol

Moles AgNO3 = 0.0206 moles

Step 4: Calculate moles of Ag

For 1 mol copper, we need 2 moles of silvernitrate to produce 1 mol of coppernitrate and 2 moles of silver

For 0.0206 moles silvernitrate we'll hace 0.0206 moles silver

9. (Use the chemical equation from above) How many moles of copper (1) nitrate ]can be  produced with and 0.89 grams of copper metal?

Step 1: Data given

Mass of Cu = 0.89 grams

Molar mass of Cu = 63.55 g/mol

Step 2: The balanced equation

Cu + 2AgNO3 → Cu(NO3)2 + 2Ag

Step 3: Calculate moles Cu

Moles Cu =0.89 grams / 63.55 g/mol

Moles Cu = 0.014 moles

Step 4: Calculate moles of Coppernitrate

For 1 mol copper, we need 2 moles of silvernitrate to produce 1 mol of coppernitrate and 2 moles of silver

For 0.014 moles of Cu we'll have 0.014 moles Cu(NO3)2

Answer:

(C) 2C(s)+2H2(g)?C2H4(g); ?G?f=68.20 kJ/mol

Explanation:

The standard free energies represent the total available work required for the process. It also indicates whether a process is spontaneous or not. If the standard free energy is negative, then it is spontaneous