24. Which of the following results in a decrease in the entropy of the system? (A) O2(g), 300 K→O2(g), 400 K (B) H2O(s), 0°C→ H2O(l), 0°C (C) N2(g), 25°C→N2(aq), 25°C (D) NH3(l), -34.5°C→ NH3(g), -34.5°C (E) 2H2O2(g)→ 2H2O(g) + O2(g)

26. According to the first law of thermodynamics, the energy of the universe is constant. Does this mean that ΔE is always equal to zero? (A) Yes, ΔE = 0 at all times, which is why q = -w. (B) No, ΔE does not always equal zero, but this is only due to factors like friction and heat. (C) No, ΔE does not always equal zero because it refers to the system's internal energy, which is affected by heat and work. (D) No, ΔE never equals zero because work is always being done on the system or by the system. (E) None of these

24. Which of the following results in a decrease in the entropy of the system?
(A) O₂(g), 300 K→O₂(g), 400 K
(B) H₂O(s), 0°C→ H₂O(l), 0°C
(C) N₂(g), 25°C→N₂(aq), 25°C
(D) NH₃(l), -34.5°C→ NH₃(g), -34.5°C
(E) 2H₂O₂(g)→ 2H₂O(g) + O₂(g)

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相關試卷

24. Which of the following results in a decrease in the entropy of the system?(A) O2(g), 300 K→O2(g), 400 K(B) H2O(s), 0°C→ H2O(l), 0°C(C) N2(g), 25°C→N2(aq), 25°C(D) NH3(l), -34.5°C→ NH3(g), -34.5°C(E) 2H2O2(g)→ 2H2O(g) + O2(g)

相關試題

相關試卷

24. Which of the following results in a decrease in the entropy of the system?
(A) O₂(g), 300 K→O₂(g), 400 K
(B) H₂O(s), 0°C→ H₂O(l), 0°C
(C) N₂(g), 25°C→N₂(aq), 25°C
(D) NH₃(l), -34.5°C→ NH₃(g), -34.5°C
(E) 2H₂O₂(g)→ 2H₂O(g) + O₂(g)