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Colt1911 [192]
3 years ago
15

For the reaction A+B↽−−⇀C+DA+B↽−−⇀C+D , assume that the standard change in free energy has a positive value. Changing the condit

ions of the reaction can alter the value of the change in free energy (Δ????)(ΔG) . Classify the conditions as to whether each would decrease the value of Δ????ΔG , increase the value of Δ????ΔG , or not change the value of Δ????ΔG for the reaction. For each change, assume that the other variables are kept constant.
Chemistry
2 answers:
BaLLatris [955]3 years ago
7 0

Explanation:

Gibbs free energy (G) is dependent upon the enthalpy (H) , temperature (T) and entropy (S) as shown in the equation below;

ΔG =  ΔH   −  TΔS

The factors affect ΔG of a reaction are given below;

Decrease the Value of G

- Positive ΔH and Positive ΔS at high temperatures.

- Negative ΔH and Negative ΔS at low temperatures.

Would not change the value of G

- Negative values of ΔH and Positive values of ΔS; (at all temperatures,  ΔG would be Negative)

- Positive values of ΔH and Negative values of ΔS; (at all temperatures,  ΔG would be positive)

Increase the Value of G

- Positive values of ΔH and Positive ΔS at low temperatures.

- Negative ΔH and Negative ΔS at high temperatures.

77julia77 [94]3 years ago
5 0
What are the answer choices
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zvonat [6]

Answer: Option (A) is the correct answer.

Explanation:

The process in which two or more small nuclei combine together to result in the formation of a larger nuclei is known as fusion.

In Sun, four hydrogen nuclei combine together to result in the formation of helium atom. This combining of small hydrogen nuclei to form a large helium nuclei represents fusion process occurring inside the Sun.

Thus, we can conclude that to power itself, the sun is constantly generating a nuclear reaction in its core, in which hydrogen nuclei are combined to form helium. This process is known as fusion.

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3 years ago
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30 its ASAP!!!! What is the volume, in liters, occupied by 0.485 moles of Oxygen gas at 23.0 oC and 0.980 atm?
USPshnik [31]
Use the universal gas formula

PV=nRT
where
P=pressure ( 0.980 atm)
V=volume (L)
T=temperature ( 23 ° C = 23+273.15 = 296.15 ° K)
n=number of moles of ideal gas (0.485 mol)
R=universal gas constant = <span>0.08205 L atm / (mol·K)

Substitute values,
Volume, V (in litres)
=nRT/P
=0.485*0.08205*296.15/0.980
= 12.0256 L
= 12.0 L (to three significant figures)

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5 0
3 years ago
Which chemical reaction would result in the greatest release of energy?
goldenfox [79]

The answer is B.

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How many moles of chromium metal equal 7.52 × 1022 atoms Cr?
grigory [225]

Answer:

0.125 mole

Explanation:

From Avogadro's hypothesis, we discovered that 1 mole of any substance contains 6.02x10^23 atoms.

The statement above suggests that 1 mole of chromium contains 6.02x10^23 atoms.

Now, if 1mole of of chromium contains 6.02x10^23 atoms,

Then Xmol of chromium contains 7.52x10^22 atoms i.e

Xmol of chromium = 7.52x10^22/6.02x10^23

Xmol of chromium = 0.125 mole

Therefore, 0.125 mole of chromium contains 7.52x10^22 atoms

8 0
3 years ago
Identify which statement about a solution is correct. Group of answer choices The solution has the same physical state as the ph
zavuch27 [327]

Water can only be the solvent, never the solute is the statement about a solution that is correct.

  • The solute is the substance that, in general, is found in less quantity and that dissolves in the mixture.

  • The solvent, on the other hand, is the substance that usually appears in greater quantity and where the solute dissolves.

  • The most usual thing is that the solvent is the substance that establishes the physical state of the solution.

  • Water is considered a universal solvent, since it is the liquid that dissolves the most substances, a quality linked to its status as a “polar molecule”, this is due to its ability to form hydrogen bonds with other substances.

Solubility depends on the properties of a solvent that allow it to interact with a solute in a stronger way than the solvent particles do with each other.

In particular, the polar character of water makes it an excellent solvent for polar and ionic solutes, which are called hydrophilic.

Therefore, we can conclude that water can only be the solvent, never the solute is the statement about a solution that is correct.

Learn more here: brainly.com/question/2835889

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