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dianactorres
06.11.2019 •
Chemistry
The internal energy of a system is always increased bya)adding heat to the system and having the system do work on the surroundings.b)having the system do work on the surroundings.c)withdrawing heat from thesystem.d)adding heat to the system.e)a volume decompression.
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Ответ:
A)adding heat to the system and having the system do work on the surroundings
Explanation:
The variation in the internal energy of a system (ΔU) is given by the First Law of Thermodynamics. See the equation below:
ΔU = Q + W
Q: Heat added (+) or removed (-) from the system
W: work done on (-) or done by (+) the system
If you add heat (Q +) and have the system do work (W +), you guarantee that th internal energy of the system will increase (ΔU +).
Ответ:
its B
Explanation:
not so sure but its reasonable for me