is this did correct? Please help with 6 & 7 64.1 kJ; AG 17 JK C) 5.3 10 JK. D) 5

Question

is this did correct?

Please help with 6 & 7

64.1 kJ; AG 17 JK C) 5.3 10 JK. D) 5.5 x 102 J/K E) 1.1 103 JK According to the first law of the the energy of the universe is constant. Does this mean that AE is always equal to zero? A) Yes. AE 0 at all times, which is why g -w. B) No. AE does not always equal zero, but this is due only to factors such as friction and heat. No, AE does not always equal zero because it refers to the system's internal energy. which is affected by heat and work. b No. AE never equals zero because work is always being done on the system or by the system. and No. AE never equals zero because energy is always flowing between the system the surroundings. 6, For a reversible phase change at constant temperature and pressure.

Explanation / Answer

Q6.

consta T and P , reversible

then

dG = 0 is true

since

dG phase 1 = dG phase 2

so

dG = dG phase 2- dG phase 1 = 0

the rate of formation of phase 1 should be the same as rate of formation of phase 2

Q7.

dS = implies chaos creation, so the more moles of gas we create and less solid we create, the better

a, ignore, since solid forms

b, 3 mol of gas form 2 mol of gas, ignore

c, 3 mol of gas form 2 mol of gas, ignore

d, 1 mol of gas forms 1 mol of gas, ignore

e, 2 solids + 1 mol of gas forms 2 mol of gas, which is much more chaotic, this should be the largest value

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