CHEMISTRY HIGH SCHOOL

For a cell whose potential is -0.46 v with 3 moles of electrons exchanged, what is DG?DG = -nFE°cell

a.) -133 kJ
b.) +133 kJ
c.) +133,170 kJ
d.) -6.65 x 10^-3

Answers

Answer 1
Answer: ΔG = -nEF

ΔG = Gibbs free energy change
n = moles of electrones participated in
E = Electrode potential
F = Faraday constant

By substituting,
ΔG = -(3 mol) x 96485 A S/ mol x (-0.46) V
      = + 133149.3 J
      = + 133 kJ

Hence the answer is "b".

Since ΔG is a positive value, the reaction is non spontaneous reaction.

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Answers

It can be both, but B. Landslide is better.
A creep is when the debris moves slowly, and landslide is when it moves rapidly... And this isn't exactly chemistry... Hope I help...

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Answers

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Answers

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Answers

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Raising the temperature of a gas will increase its pressure if the volume of the gas
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Answers

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2) Option c: raising the temperature of the gas will increase the pressure if the volumen of the gas and the number of particles are constant.

PV = nRT

If V and n are constant, P is proportional to T, then if T increase P will increase too.

In less scientific words

For number 1 is GAS PRESSURE

And number 2 is TEMPERATURE

  • I hope this works for you guys
  • :)

A solution that is at equilibrium must be(1) concentrated (3) saturated(2) dilute (4) unsaturated

Answers

Answer:

(3) saturated

Explanation:

Hello,

In this case, a solution that is at equilibrium must be (3) saturated as at the equilibrium, the entire solute is completely dissolved into the solvent, so no leftovers are present. Unsaturated solutions are not at equilibrium since there is a portion of solvent that is not contributing to equilibrium. Concentrated solutions are not at equilibrium since they could have more solution than allowed into the solvent.

Best regards.
A solution that is at equilibrium must be saturated.
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