When a system ________,ΔE is always negative.
A)absorbs heat and does work
B)gives off heat and does work
C)absorbs heat and has work done on it
D)gives off heat and has work done on it
E)None of the above is always negative.

Question

Quizplus · Accepted Answer

When a system gives off heat and does work, the energy of the system decreases, resulting in a negative ΔE. This is due to the first law of thermodynamics, which states that energy cannot be created or destroyed, only transferred. Therefore, when a system loses energy in the form of heat and work, its internal energy decreases, resulting in a negative ΔE.

When a System ________,ΔE Is Always Negative