A tanker truck carrying 6.05×103 kg of concentrated sulfuric acid solution tips over and spills its load. The sulfuric acid solution is 95.0%H2SO4 by mass and has a density of 1.84 g/mL.

Part A

Sodium carbonate (Na2CO3) is used to neutralize the sulfuric acid spill. How many kilograms of sodium carbonate must be added to neutralize 6.05×103 kg of sulfuric acid solution?

Express your answer with the appropriate units

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.

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:

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⁻

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

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:

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

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:

The answer is B. Li

Explanation:

2Li will be needed to form an ionic compound because the known element sulphur requires 2 (two) electron to complete  its octet configuration.

So reacting with Lithium (2Li) will balance their electronic configuration.

Final answer:

Lithium (Li) is the most likely identity for element 'X' because it forms a +1 cation (Li+), which would combine with the -2 charge of a sulfide ion (S₂-) to create the compound Li₂S. Option B

Explanation:

When considering the reaction with sulfur to form an ionic compound of the form X₂S, we are looking for an element that can form a +1 oxidation state to balance the -2 charge on the sulfide ion (S₂-). Among the options provided, lithium (Li) is a member of the alkali metals (group 1) and naturally forms a +1 charged ion (Li+). Therefore, when it reacts with sulfur, it would form Li₂S, making lithium the most likely candidate for element 'X' in the given formula.

Other options, such as magnesium (Mg) and aluminum (Al), are in group 2 and 13 respectively, and typically form +2 and +3 ions. Chlorine (Cl) is a nonmetal and would not form a compound with the general formula X₂S. Cerium (Ce) is a lanthanide and it primarily forms compounds in a +3 or +4 oxidation state, not +1. Therefore, these elements are not suitable candidates for element 'X' given the provided compound formula.

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:

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:

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:

4O₂ (g) + 1/2C₅H₁₂ (g) →  5/2CO₂ (g)  +  3H₂O (g)

4 would be the smallest possible integer for O₂

Explanation:

The balanced equation is this one:

8O₂ (g) + C₅H₁₂ (g) →  5CO₂ (g)  +  6H₂O (g)

If we divide stoichiometry /2 (the half) we can consider that we use, the smallest possible integers.

8/2O₂ (g) + 1/2C₅H₁₂ (g) →  5/2CO₂ (g)  +  6/2H₂O (g)

4O₂ (g) + 1/2C₅H₁₂ (g) →  5/2CO₂ (g)  +  3H₂O (g)

Final answer:

The correct coefficient for O₂ when balancing the combustion of pentane equation is 8, as it provides the required 16 oxygen atoms to balance the equation.

Explanation:

To balance the chemical equation for the combustion of pentane (C₅H₁₂), we will need to follow a systematic approach.

Write down the unbalanced equation: ? O₂(g) + ? C₅H₁₂(g) → ? CO₂(g) + ? H₂O(g)

Balance the carbons first: Since there are 5 carbons in pentane, we need 5 CO₂ molecules on the product side to balance the carbon atoms.

Balance the hydrogens second: Pentane has 12 hydrogen atoms, so we need 6 H₂O molecules to balance the hydrogen atoms since each H₂O has 2 hydrogen atoms.

Balance the oxygens last: There are now 10 oxygen atoms from the CO₂ and another 6 from the H₂O, making a total of 16 oxygen atoms on the product side. Since O₂ has 2 oxygen atoms, we need 8 O₂ molecules to balance the oxygen atoms.

The balanced equation becomes: 8 O₂(g) + C₅H₁₂(g) → 5 CO₂(g) + 6 H₂O(g)

The appropriate coefficient for O₂ when the equation is balanced using the smallest possible integers is 8.

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.

Answer: D. MIXTURE

Explanation:

It’s important, you first understand the meaning of a pure substance, an element, a compound and a mixture.

A pure substance is a material with a particular composition and consists of only one type of atom or compound. An example is pure sugar.

An element is a substance that cannot be broken down chemically and elements have just one symbol from the periodic table such as Carbon (C), Hydrogen (H).

A compound consists of two or more elements that are bonded chemically. For example, ammonia is a compound with a chemical formula NH3 which means it is means it is made up of 3 moles of Hydrogen and 1 mole of nitrogen.

A mixture contains two or more elements or compounds that are not bonded chemically. It can homogenous or heterogeneous. Examples are salt solution, sand, vinegar.

Vinegar is a mixture of two compounds water and acetic acid and can be separated by physical means because no chemical bond exists between water and acetic acid.

Vinegar is best classified as a mixture because it consists of two different molecules - water and acetic acid - that are not chemically bonded, fitting the criteria of a mixture over an element, compound, or pure substance.

Vinegar is composed of approximately 5% acetic acid and 95% water. Which classification best fits vinegar? The correct choice is D. mixture. Vinegar is a mixture because it contains more than one kind of molecule - in this case, water (H2O) and acetic acid (CH3COOH) - combined in such a way that they can be physically separated. The components of a mixture are not chemically combined, which distinguishes mixtures from compounds. Elements consist of a single type of atom, and pure substances are made of only one type of molecule, thus excluding vinegar from being classified as an element or a pure substance. Therefore, vinegar's composition fits the definition of a mixture.

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

Answer: add the acid to the water

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:

neutrons

Explanation:

Atomic number : It is defined as the number of electrons or number of protons present in a neutral atom.

Mass number is the number of the entities present in the nucleus which is the equal to the sum of the number of protons and electrons.

Mass number = Number of protons + Number of neutrons

Thus both C14 and C12 have same number of protons as they have same atomic number.

The difference in the mass number of both the isotopes is sue to the difference in the number of neutrons.

Atomic number  = Number of protons = 6

For CC- 14, Number of neutrons = 14 - 6 = 8

For C 12, Number of neutrons = 12 - 6 = 6

Answer:

mass number

Explanation:

bc it just is

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

Answer:Elements of even atomic number and mass number are more stable than elements of odd atomic and mass numbers

Explanation: The fact that elements possessing even number of nucleons are more stable and abundant suggests that nucleons are paired in the nucleus. This even number of nucleons is commonly called a magic number because bit is associated with extra stability, abundance of elements and plenitude of isotopes of such elements.

These magic numbers are often numbers which are multiples of four.

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:

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 ,

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

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:

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:

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:

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.

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 : 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: 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