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Author Question: According to the first law of thermodynamics, the energy of the universe is constant. Does this mean ... (Read 38 times)

colton

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on: Mar 21, 2021

Question 1

A gas absorbs 0.0 J of heat and then performs 30.8 J of work. The change in internal energy of the gas is

◦ 61.6 J.
◦ 30.8 J.
◦ –61.6 J.
◦ –30.8 J.
◦ none of these are correct.

Question 2

According to the first law of thermodynamics, the energy of the universe is constant. Does this mean that ΔE is always equal to zero?

◦ Yes, ΔE = 0 at all times, which is why q = -w.
◦ No, ΔE does not always equal zero, but this is only due to factors like friction and heat.
◦ No, ΔE does not always equal zero because it refers to the system's internal energy, which is affected by heat and work.
◦ No, ΔE never equals zero because work is always being done on the system or by the system.
◦ No, ΔE never equals zero because energy is always flowing between the system and surroundings.
Chemistry: An Atoms First Approach ¦ Zumdahl, DeCoste ¦ 3rd Edition
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Marked as best answer by colton on Mar 21, 2021

Tonny

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Reply #1 on: Mar 21, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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colton

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Reply 2 on: Mar 21, 2021
Great answer, keep it coming :)

jamesnevil303

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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