A nuclear reaction is at its most basic nothing more than a reaction process that occurs in an atomic nucleus. They typically take place when a nucleus of an atom gets smacked by either a subatomic particle (usually a "free neutron," a short-lived neutron not bound to an existing nucleus) or another nucleus
but alot of things happen to be honest to much to put down but the basic is a blast of energy that is super heated by friction that is followd by nuclear after fall and this can be very deadly even miles away
hope this helps
Final answer:
In a nuclear reaction, the nucleus of an atom undergoes a change, often transforming into a different element or isotope and releasing tremendous amounts of energy. This energy, derived from the nuclear binding energy, is much greater than energy changes in chemical reactions.
Explanation:
A nuclear reaction is a process where the nucleus of an atom changes. This change can result in the transformation of elements through a process known as transmutation or the conversion of atoms into various isotopes. Unlike chemical reactions, where electrons are transferred or shared between atoms, nuclear reactions involve changes in the nucleus and typically release far greater amounts of energy. This energy comes from the nuclear binding energy, which binds protons and neutrons in the nucleus.
Two primary types of nuclear reactions are nuclear decay reactions and nuclear transmutation reactions. In decay reactions, an unstable nucleus emits radiation to form a more stable nucleus, while transmutation reactions occur when nuclei or subatomic particles collide and transform into a different element or isotope. These processes often produce energy orders of magnitude greater than that produced by chemical reactions, highlighting the immense power of nuclear changes.
what is the percentage of water in hydrated calcium chloride
Answer:
24.5%
Explanation:
You just add up the atomic masses.
Ca - 40.078
Cl2 - 35.4527 x 2 = 70.9054
------ 110.9834
H4 - 1.00794 x 4 = 4.03176
O2 - 31.9998
------ 36.03056
TOTAL - 147.01396
So the water is 36.03056/147.01396 = .245082576 but that is only accurate to three decimals (because the mass of Ca was only given to three decimals) so we write .245 and that is 24.5%
This is not my answer but I found it on Yahoo answers and it was answered by Anonymous.
Answer: 24.5%
Explanation: Molar mass of CaCl2 * 2 H2O = 40.078 + ( 2 x 35.453) + ( 2 x 18.02)=147.024 g/mol
% H2O = 2 x 18.02 x 100/ 147.024 =24.5
How much energy is released when 0.40 mol C6H6(g) completely reacts with oxygen? 2C6H6(g) + 15O2(g) 12CO2(g) + 6H2O(g) kJ
Answer:
-1268 kJ
Explanation:
The molar enthalpy of combustion of C6H6 is -3170 kJ/mol
2C6H6(g) + 15O2(g) → 12CO2(g) + 6H2O(g)
Therefore;
when 1 mole of C6H6 undergoes combustion, an energy of -3170 kJ/mol is released.
Therefore; for 0.40 mole
= 0.4 × -3170 kJ
= -1268 kJ
Answer:
The guy above me is correct, but the next answers are -67.68 and exothermic
Explanation: edge
What type of equation is HgO=Hg+o2
Answer:
Thermal decomposition reaction.
Explanation:
Solid mercury(II) oxide is decomposed with heating into liquid mercury and oxygen gas. This reaction takes place at a 600-700°C.
The balanced chemical reaction is:
2HgO → 2Hg + O₂.
Considering the definition of decomposition reaction, the reaction HgO → Hg + O₂ is a thermal decomposition reaction.
Definition of decomposition reactionA single substance decomposes through a reaction called decomposition, producing two or more diferent compounds. That is, in this type of reaction two or more compounds are formed from a compound.
The atoms that make up a compound are separated to give the products according to the formula:
AB → A + B
This type of reaction can occur spontaneously or caused by certain external factors, such as heat. So, there are 3 types of decomposition reactions:
Catalysis is the term used when the decomposition results from the action of a catalyst.Thermal decomposition is the term used when decomposition is caused by the application of heat.Electrolytic decomposition or electrolysis is the term used to describe decomposition that is caused by the introduction of electric current.Type of reaction in this caseThe reaction HgO → Hg + O₂ is a thermal decomposition reaction where mercuric oxide (HgO) decomposes on heating to give mercury (Hg) and oxygen (O₂).
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why blood capillary walls differ from veins and arteries
Answer: Capillary walls main function is to exchange materials between the blood and tissue cells, While Arteries carry blood away from the heart to parts of your body like your lungs for instance, and your Veins carry blood back to your heart.
I hope this helps :)
Explanation:
Five grams of sugar is mixed with 300 mL of water. In the solution, water would be classified as the —
solute
solvent
base
saline
Answer:Five grams of sugar is mixed with 300 mL of water. In the solution, water would be classified as the —
solvent
Explanation:
It is the solvent because it can dissolve the sugar.
Solvent- able to dissolve other substances.
The sugar has been dissolved in the water, sugar has been considered as solute. The water has been dissolving sugar in itself so it has been considered as solvent.
The mixture of solute and solvent has been termed as the solution. The solute has been the molecule that has been dissolved. The solvent is the molecule that dissolves the solute.The base has been the solution in which the alkaline character has been more. More alkalinity has been contributed by the increased hydroxide ion concentration.The saline is the solution of NaCl in water. When NaCl has been dissolved in the water, the solution formed has been known as saline.Since sugar has been dissolved in the water, sugar has been considered as solute. The water has been dissolving sugar in itself so it has been considered as solvent.
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Nuclear decay is more likely to occur when?
Answer:
Radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold the nucleus together due to an excess of either protons or neutrons.
Hope this helps!
Answer:
It happens when a heavy nucleus is bombarded with neutrons, so it becomes unstable and decomposes into two nuclei.
Explanation:
This is known by the term nuclear fission, which is a reaction by which a heavy nucleus, when bombarded with neutrons, becomes unstable and divides into two nuclei, of sizes of the same order of magnitude, there is a high release of energy and emits two or three neutrons. These neutrons can lead to more fissions by interacting with other fissile nuclei.
Given the density of Au is 19.3 g/cm3. Determine the mass of gold in an ingot with the dimension of 10.0 cm x 4.00cm x 3.00cm.
Answer:
2.317 kg
Explanation:
Density = mass / vol
Vol = 10 x4 x 3 =120
Density=19.3 gm/cm3
Mass= density x vol =2316 gm or 2.317 kg
Answer: The mass of gold is 2316 grams.
Explanation:
To calculate the volume of cuboid, we use the equation:
[tex]V=lbh[/tex]
where,
V = volume of cuboid
l = length of cuboid = 10 cm
b = breadth of cuboid = 4 cm
h = height of cuboid = 3 cm
Putting values in above equation, we get:
[tex]V=10\times 4\times 3=120cm^3[/tex]
To calculate mass of a substance, we use the equation:
[tex]Density=\frac{Mass}{Volume}[/tex]
Putting values in above equation, we get:
[tex]19.3g/cm^3=\frac{\text{Mass of Gold}}{120cm^3}\\\\\text{Mass of osmium}=2316g[/tex]
Hence, the mass of gold is 2316 grams.
what did earth look like before life began
Answer:
Like a jungle with trees everywhere
Hope This Helps! Have A Nice Day!!
I would suggest reading Genesis chapter 1 to 2. It'll explain it all.
how long does the venus flytrap process take once it has its prey
After trapping its prey, the plant turns into a external stomach, sealing the trap so no air gets in or out. The digestion takes several days depending the size of the insect, and then the leaf re-opens.
The directness of the sunlight at a specific latitude will determine the amount of solar energy that latitude receives. Please select the best answer from the choices provided T F
Answer:
True
Explanation:
The amount of solar energy a particular place receives is directly dependent on the directness of the sunlight. This is like this because the more direct the sunlight is , the more concentrated at smaller area it is, thus warming the area more, and the less direct the sunlight is, the more dispersed the sunlight is, and the area is heated much less. The directness of the sunlight depends on the inclination of the Earth, as well as the shape of the Earth. The inclination makes certain areas be more exposed to the sunlight in part of the year, and than be less exposed in the other part of the year. The shape of the Earth is directly influencing the angle by which the sunlight falls, the lower the latitude, the more direct the sunlight, the higher the latitude, the less direct the sunlight.
Answer:
T
Explanation:
which of the following is an acid-base neutralization reaction
Sn+2HF->SnF2+H2
C2H4+3O2->2CO2+H2O
MgCl2+Ca(OH)2->Mg(OH)2+CaCl2
HNO3+KOH->KNO3+H2O
Answer:
The right choice is "HNO₃ + KOH → KNO₃ + H₂O"
Explanation:
acid-base neutralization reaction is a reaction in which acid react with base to form salt and water.
Sn + 2HF → SnF₂ + H₂This is a reaction between metal (Sn) and acid (HF)
2. C₂H₄ + 3 O₂ → 2 CO₂ + H₂O
This is a combustion reaction
3. MgCl₂ + Ca(OH)₂ → Mg(OH)₂ + CaCl₂
This is a simple displacement reaction between salt (MgCl₂) and base (Ca(OH)₂).
3. HNO₃ + KOH → KNO₃ + H₂O
This is a acid-base neutralization reaction in which acid (HNO₃) react with base (KOH) to form salt (KNO₃) and water (H₂O).
So, the right choice is "HNO₃ + KOH → KNO₃ + H₂O"
The pressure exerted on a sample of gas is 735 mm Hg with a volume of 375 mL and a temperature of 25 degrees Celsius. What would the pressure of the gas be if the temperature was reduced to standard temperature and the volume was expanded to 500.0 mL?
Answer:
= 498.13 mmHg
Explanation:
Using the combined gas law;
P1V1/T1 =P2V2/T2
in this case; P1 = 725 mmHg, V1 = 375 mL and T1 = 25°C + 273 = 298 K
P2 = ? V2 = 500 mL and T2 (standard temperature) = 0°C + 273 = 273 K
P2 = P1V1T2/T1V2
= (725 × 375 × 273)/(298 × 500)
= 498.13 mmHg
What is the molar mass of aluminum chlorate, Al(ClO3)3?
The molar mass of Aluminium Chlorate is 277.3351
The molar mass of Aluminium Chlorate is 277.3351.
What is meant by Molar Mass?The molar mass (symbol M, SI unit kg·mol−1) is defined as the mass per unit amount of substance of a given chemical entity. In keeping with the definition of the mole, the chemical entity in question should always be specified.The molar mass of Aluminium Chlorate is 277.3351.
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How many milliliter of 2m NACL solution are required to make 1 liter of 0.4 M NACL solution
The volume (in mL) required to make 1 L of the solution is 200 mL
Data obtained from the questionMolarity of stock solution (M₁) = 2 MVolume of diluted solution (V₂) = 1 L = 1000 mL Molarity of diluted solution (M₂) = 0.4Volume of stock solution (V₁) = ?How to determine the volume of the stock solutionM₁V₁ = M₂V₂
2 × V₁ = 0.4 × 1000
2 × V₁ = 400
Divide both side by 2
V₁ = 400 / 2
V₁ = 200 mL
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Final answer:
To prepare 1 liter of a 0.400 M NaCl solution from a 2.00 M NaCl solution, you need 200 milliliters of the 2.00 M solution, calculated using the dilution formula M1V1 = M2V2.
Explanation:
To determine how many milliliters of a 2.00 M NaCl solution are required to make 1 liter of a 0.400 M NaCl solution, we can use the dilution formula M1V1 = M2V2, where M1 is the molarity of the initial solution, V1 is the volume of the initial solution, M2 is the molarity of the final solution, and V2 is the volume of the final solution
In this case, we have:
M1 = 2.00 M (initial molarity of NaCl)
M2 = 0.400 M (desired molarity of NaCl)
V2 = 1 liter = 1000 mL (desired volume of final solution)
To find V1, we rearrange the equation: V1 = (M2 × V2) / M1.
Substituting in the known values, we get: V1 = (0.400 M × 1000 mL) / 2.00 M = 200 mL.
So, you would need 200 milliliters of the 2.00 M NaCl solution to prepare 1 liter of a 0.400 M NaCl solution.
A chemical equation that is balanced will help you to determine the.......
Answer:
A chemical equation that is balanced will help you to determine how much product they will produce from their reactants.
Hope this helps :)
Have a great day !
5INGH
Explanation:
Match the following.
1. to bend
-
opaque
-
2. not allowing light to pass through
-
refract
-
3. only partially clear
-
translucent
4. clear
transparent
Answer:
1. to bend ==> refract
2. not allowing light to pass through ==> opaque
3. only partially clear ==> translucent
4. clear ==> transparent
Explanation:
1. to bend ==> refract
When a substance (like water) or a surface (like a mirror) changes the direction of the light, it refracts it.
2. not allowing light to pass through ==> opaque
Usually a solid but also a thick/dark liquid can be an opaque barrier preventing the passage of light.
3. only partially clear ==> translucent
Think about a white plastic or a film-coated glass pane, they will let you see there's light on the other side, but not letting it pass through completely.
4. clear ==> transparent
Think like a window or a anything similar that allows the light to pass through without any significant obstruction.
Answer:
1. to bend ==> refract
2. not allowing light to pass through ==> opaque
3. only partially clear ==> translucent
4. clear ==> transparent
Explanation:
Calculate the pH of a solution with [OH−]=1.3×10−2M. (Hint: Begin by using Kw to find [H3O+].)
Answer:
12.11.
Explanation:
∵ pOH = - log[OH⁻]
∴ pOH = - log(1.3 x 10⁻²) = 1.886.
∵ pH + pOH = 14.
∴ pH = 14 - pOH = 14 - 1.886 = 12.11.
A gas occupies 65 mL at a temperature of 92.4 °C. What is the volume at 87.6 °C?
Answer:
64.15 mL.
Explanation:
We can use the general law of ideal gas: PV = nRT.where, P is the pressure of the gas in atm.
V is the volume of the gas in L.
n is the no. of moles of the gas in mol.
R is the general gas constant,
T is the temperature of the gas in K.
If n and P are constant, and have two different values of V and T:V₁T₂ = V₂T₁
V₁ = 65.0 mL, T₁ = 92.4°C + 273 = 365.4 K.
V₂ = ??? mL, T₂ = 87.6°C + 273 = 360.6 K.
∴ V₂ = V₁T₂/T₁ = (65.0 mL)(360.6 K)/(365.4 K) = 64.15 mL.
Which gas below has the largest number of moles at STP?
a.) 22.4L Ne
b.) 20L Ar
c.) 2.24L Xe
d.) They all have the same number of moles.
Answer:
a.) 22.4 L Ne.
Explanation:
It is known that every 1.0 mol of any gas occupies 22.4 L.
For the options:
22.4 L Ne:It represents 1.0 mol of Ne.
20 L Ar:
using cross multiplication:
1.0 mol occupies → 22.4 L.
??? mol occupies → 20 L.
The no. of moles of (20 L) Ar = (1.0 mol)(20 L)/(22.4 L) = 0.8929 mol.
2.24 L Xe:using cross multiplication:
1.0 mol occupies → 22.4 L.
??? mol occupies → 2.24 L.
The no. of moles of (2.24 L) Xe = (1.0 mol)(2.24 L)/(22.4 L) = 0.1 mol.
So, the gas that has the largest number of moles at STP is: a.) 22.4 L Ne.How many grams are in 2.06x10-4 moles of calcium phosphate
Answer:
63.86 mg
Explanation:
Molar mass is the mass of 1 mol of compound / atom.
molar mass of the compound is - 310 g/mol
mass of 1 mol is - 310 g
therefore mass of 2.06 x 10⁻⁴ mol is - 310 g/mol x 2.06 x 10⁻⁴ mol = 0.06386 g
mass of calcium phosphate is - 63.86 mg
Final answer:
To find the mass of 2.06 x 10⁻⁴ moles of calcium phosphate (Ca₃(PO₄)₂), calculate the formula mass using atomic masses of calcium, phosphorus, and oxygen. The formula mass of calcium phosphate is 310.18 g/mol. Multiplying this by the moles gives you 0.0639 grams of calcium phosphate.
Explanation:
To calculate the mass in grams of 2.06 x 10⁻⁴ moles of calcium phosphate (Ca₃(PO₄)₂), you must know the formula mass of calcium phosphate. The empirical formula indicates the compound contains three calcium ions (Ca⁺²) and two phosphate ions (PO₄⁻³). The formula mass is calculated by adding together the atomic masses of the constituent atoms: three calcium atoms, two phosphorus atoms, and eight oxygen atoms.
The atomic masses are approximately 40.08 g/mol for calcium, 30.97 g/mol for phosphorus, and 16.00 g/mol for oxygen. Calculating the formula mass, we have:
3(Calcium) + 2(Phosphorus) + 8(Oxygen) = 3(40.08 g/mol) + 2(30.97 g/mol) + 8(16.00 g/mol) = 310.18 g/mol
Now, to find the mass of 2.06 x 10-4 moles of calcium phosphate:
2.06 x 10⁻⁴ moles x 310.18 g/mol = 0.0639 grams
Therefore, there are 0.0639 grams of calcium phosphate in 2.06 x 10⁻⁴ moles of the compound.
Which reaction is an example of an endothermic reaction?
Answer:
These examples could be written as chemical reactions, but are more generally considered to be endothermic or heat-absorbing processes: Melting ice cubes. Melting solid salts. ... Converting frost to water vapor (melting, boiling, and evaporation, in general, are endothermic processes.
Explanation:
We have that an example of an endothermic reaction is given as
EvaporationThe Formation of Nitric Acid
From the question we are told
Which reaction is an example of an endothermic reaction?
Generally an endothermic reaction is a reaction where heat energy is absorb from the air in to a system.
Generally it cause a reduction in the temperature of a system and can be found in processes like
EvaporationThe Formation of Nitric AcidTherefore
An example of an endothermic reaction is given as
EvaporationThe Formation of Nitric Acid
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Which graph is an inverse graph?
Answer:
there are no graphs
Explanation:
Answer:
The graph has to switch into the values.
Explanation:
So if you're asked to graph a function and its inverse, all you have to do is graph the function and then switch all x and y values in each point to graph the inverse. Just look at all those values switching places from the f(x) function to its inverse g(x) (and back again), reflected over the line y = x.
Which subatomic particles are primarily responsible for giving an atom its mass?
Answer:
protons and neutrons
Explanation:
its on the assighnment
Protons and neutrons subatomic particles are primarily responsible for giving an atom its mass .
What do you mean by protons and neutrons ?A proton is a positively charged particle that lies in the atomic nucleus .
The number of protons in the atomic nucleus is what determines the atomic number of an element .
It has a mass of mass of 1.67262 × 10⁻²⁷ kg
An electron is a negatively charged particle of an atom.
Electrons exist outside of the atom nucleus. Each electron carries one unit of negative charge -1.602 x 10⁻¹⁹ coulomb .
Hence , protons and neutrons subatomic particles are primarily responsible for giving an atom its mass .
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1. In a compound, which type of bond is the sharing of electrons between adjacent atoms?
A. Nuclear bond
B. Electric bond
C. Chemical bond
D. Hydrogen bond
2. Two compounds are mixed and light is emitted, the color changes, and heat is liberated.
Which activity has occurred?
A. Chemical reaction
B. Chemical mixture
C. Chemical nucleus exchange
D. Chemical compromise
3. Which sodium reacts with chlorine to make sodium chloride (table salt), which term applies to sodium chloride?
A. Reactant
B. Mixture
C. Evaporate
D. Product
4. Which name is given to a reaction in which the number of each atom on one side of the equation is equal to the number of the same kind of atoms on the other side of the equation?
A. Complete
B. Atomic
C. Balanced
D. Electrical
5. In the reaction NA + CI - - - > NaCI, which statement indicates whether the equation is balanced?
A. Visual evidence is necessary to determine the balance of the reaction
B. Atoms of the same kind are of equal number on either side of the arrow
C. Atoms of the same kind are not of equal number on either side of the arrow
D. Evidence of the heat reaction is necessary to tell whether the equation is balanced.
Answer:
1. C. Chemical bond
2. A. Chemical reaction
3. Product
4. C. Balanced
5. B. Atoms of the same kind are of equal number on either side of the arrow
Explanation:
A chemical bond is a bond between two or more atoms. There are different types of chemical bonds, but the one that the question is pertaining to is called a covalen bond. A covalent bond occurs when the atoms are sharing electrons.
2. A chemical reaction is characterized by the production of light and/or heat, and a change in color in the product. By definition, it is the process where one or more substances react to produce one or more products.
3. When one or more reactants react with each other, it creates another substance or substances called products. In the case of your question, sodium reacts with chlorine (these are your reactants), which produces the product sodium chloride, which is a compound.
4. By definition, a balanced equation is an equation where the number of atoms of each element in the reactants are equal to the number of atoms of each element in the product.
ex.
Reactants Product
Na + Cl → NaCl
Na = 1 Na = 1
Cl = 1 Cl = 1
5. As explained above and shown, you can see that the number of atoms of each element in the reactants is equal to the number of each element in the product. So this means that the equation is balanced.
Answer:
1chemical bond 2chemical reaction 3 reaction 4 atomic 5atoms of the same kind ate not of equal number on either side of the arrow
When you compare the DNA of two closely related organisms, would you expect their DNA to be more
similar or less similar than the DNA of two distantly related organisms?
Answer:
You would expect their DNA to be more similar.
Explanation:
You would expect this because they're more closely related and have had fewer time for mutations to occur.
DNA of two closely related organisms would be more similar, while DNA of two distantly related organisms would be less similar.
Explanation:When you compare the DNA of two closely related organisms, you would expect their DNA to be more similar. Closely related organisms share a recent common ancestor, which means they have had less time for genetic differences to accumulate. As a result, their DNA sequences are more likely to be similar. On the other hand, when you compare the DNA of two distantly related organisms, you would expect their DNA to be less similar. Distantly related organisms have had more time for genetic differences to accumulate, resulting in more differences in their DNA sequences.
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How many particles are in a mole? 6.02 × 1023 23 × 106 602 billion 6.02 × 2310
Answer:
[tex]1mole=6.02x10^{23} unit[/tex] (Avogadro constant)
Explanation:
It is known by the name of mole (mol) to one of the fundamental physical magnitudes that contemplate the International System of Units. This unit is used to measure the quantity of all kinds of substances present in a given system.
The mole, experts say, reflects the amount of substance that has a specific number of entities of elementary character as atoms can be found in twelve grams of carbon-12. This means that the number of elementary units (as in the case of atoms, molecules or ions, for example) that are reflected in a mole of substance is a constant that has no direct relationship with the type of particle or material in question. This amount is known as Avogadro's number.
This constant, baptized in homage to the scientist of Italian origin Amedeo Avogadro (1776-1856), allows to count microscopic particles from macroscopic measurements (as it is the case of the mass).
In chemistry, a mole consists of exactly 6.022 × 10²³ particles, which can be atoms, molecules, ions, or electrons. This quantity is known as Avogadro's number. Option A is correct.
The number of particles in a mole is a fundamental concept in chemistry, directly associated with the Avogadro's number. One mole of any substance, be it atoms, molecules, ions, or electrons, contains exactly 6.022 × 10²³ of those particles.
This specific value is selected for its utility in linking the macroscopic measurements that scientists can easily work with, to the microscopic scale of atoms and molecules which are too small to interact with directly.
This value (6.022 × 10²³) also represents the bridge between the molecular scale and the scale of chemical reactions observable and measurable in the laboratory. It's because every mole of substance, due to this number, will have a mass in grams equal to its molecular (or atomic) mass which is a direct translation of microscopic properties to macroscopic quantities that can be measured.
Hence, A. is the correct option.
The complete question is:
How many particles are in a mole?
A. 6.02 × 10²³
B. 23 × 10⁶
C. 6.02 × 23¹⁰
B. For the following questions, use the reaction NO2(g) N2(g) + O2(g), with ΔH = –33.1 kJ/mol and ΔS= 63.02 J/(mol·K).
i. Draw a possible potential energy diagram of the reaction. Label the enthalpy of the reaction.
ii. Is the reaction endothermic or exothermic? Explain your answer. (2 points)
iii. What is the Gibbs free energy of the reaction at 25°C?
iv. Is the reaction spontaneous or nonspontaneous at 25°C? Explain your answer.
Answer:
I. Kindly, see the attached image.
II. The reaction is exothermic.
III. - 51.88 kJ/mol.
IV. The reaction is spontaneous.
Explanation:
I. Draw a possible potential energy diagram of the reaction. Label the enthalpy of the reaction.
Since the sign of ΔH is negative, the reaction is exothermic reaction.In an exothermic reaction, the energy of the reactants is higher than that of the products.
Kindly see the attached image to show you the potential energy diagram of the reaction.
II. Is the reaction endothermic or exothermic? Explain your answer.
The reaction is exothermic reaction.The sign of ΔH indicates wither the reaction is endothermic or exothermic one:If the sign is positive, the reaction is endothermic.
If the sign is negative, the reaction is exothermic.
Herein, ΔH = - 33.1 kJ/mol, so the reaction is exothermic.
III. What is the Gibbs free energy of the reaction at 25°C?
∵ ΔG = ΔH - TΔS.
Where, ΔG is the Gibbs free energy change (J/mol).
ΔH is the enthalpy change (ΔH = - 33.1 kJ/mol).
T is the temperature (T = 25°C + 273 = 298 K).
ΔS is the entorpy change (ΔS = 63.02 J/mol.K = 0.06302 J/mol.K).
∴ ΔG = ΔH - TΔS = (- 33.1 kJ/mol) - (298 K)(0.06302 J/mol.K) = - 51.88 kJ/mol.
IV. Is the reaction spontaneous or nonspontaneous at 25°C?
The sign of ΔG indicates the spontaneity of the reaction:
If ΔG < 0, the reaction is spontaneous.
If ΔG = 0, the reaction is at equilibrium.
If ΔG > 0, the reaction is nonspontaneous.
Herein, ΔG = - 51.88 kJ/mol, so the reaction is spontaneous.
The reaction NO2(g) → N2(g) + O2(g) is exothermic as indicated by the negative ΔH. The Gibbs free energy (ΔG) at 25°C is calculated to be -51.9996 kJ/mol, which signifies that the reaction is spontaneous at this temperature.
Explanation:Understanding Chemical Reactions and ThermodynamicsFor the reaction NO2(g) → N2(g) + O2(g), with ΔH = –33.1 kJ/mol and ΔS = 63.02 J/(mol·K):
Potential energy diagram: Since this is a text-based response, we can describe the diagram. At the beginning we have the reactants at a higher potential energy level; then there's a peak representing the activation energy. Following this peak, the products are at a lower potential energy level by 33.1 kJ/mol, illustrating an exothermic reaction.Endothermic or exothermic: The reaction is exothermic since the enthalpy change (ΔH) is negative, indicating that energy is released.Gibbs free energy at 25°C: ΔG can be calculated using the equation ΔG = ΔH - TΔS. Plugging in the values we get ΔG = (-33.1 kJ/mol) - (298 K)(63.02 J/mol·K × 1 kJ/1000 J) = -33.1 kJ/mol - 18.8996 kJ/mol = -51.9996 kJ/mol.Spontaneity at 25°C: The reaction is spontaneous at 25°C since ΔG is negative, which implies that the reaction can occur without external energy input.Learn more about Exothermic Reactions here:https://brainly.com/question/10373907
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Calculate the mole fraction of each component in a solution with 6.87 g of sodium chloride (NaCl) dissolved in 65.2 g of water. Work must be shown in order to earn credit.
Answer:
mole fraction of NaCl = 0.03145.
mole fraction of water = 0.9686.
Explanation:
Mole fraction is an expression of the concentration of a solution or mixture.It is equal to the moles of one component divided by the total moles in the solution or mixture. The summation of mole fraction of all mixture components = 1.mole fraction of NaCl = (no. of moles of NaCl) / (total no. of moles).
no. of moles of NaCl = mass/molar mass = (6.87 g)/(58.44 g/mol) = 0.1176 mol.
no. of moles of water = mass/molar mass = (65.2 g)/(18.0 g/mol) = 3.622 mol.
∴ mole fraction of NaCl = (no. of moles of NaCl) / (total no. of moles) = (0.1176 mol)/(0.1176 mol + 3.622 mol) = 0.03145.
∵ mole fraction of NaCl + mole fraction of water = 1.0.
∴ mole fraction of water = 1.0 - mole fraction of NaCl = 1.0 - 0.03145 = 0.9686.
According to most scientists, cold fusion
will not be a practical source of energy on Earth
According to most scientists, cold fusion will not be a practical source of energy on Earth. Option 1 is correct.
Cold fusion is a hypothetical type of nuclear fusion that would occur at or near room temperature. If it were possible to achieve cold fusion, it would be a virtually unlimited source of energy. However, there is no scientific consensus that cold fusion is actually possible, and there have been many failed attempts to reproduce the results of early experiments.
Most scientists believe that cold fusion will not be a practical source of energy is that it would require very high pressures and temperatures to initiate the fusion reaction. These conditions are difficult to achieve and maintain in a laboratory setting, and it is not clear how they could be scaled up to a commercial level.
Another problem with cold fusion is that it would likely be very expensive to produce. The materials and equipment needed to create the high pressures and temperatures would be very costly, and the energy output would probably be relatively low. Option 1 is correct.
The complete question is
According to most scientists, cold fusion
1. Will not be a practical source of energy on Earth
2. Would be a practical source of energy on Earth if it were less expensive
3. Will be a practical source of energy on Earth within the next few decades
4. Will always continue to be a practical source of energy on Earth
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A substance has a high melting point and conducts electricity in the liquid phase The is substance is
Answer:
oxygen
Explanation:
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