A system absorbs $500 ext{ J}$ of heat and performs $200 ext{ J}$ of work. What is the change in internal energy of th

Question

A system absorbs $500	ext{ J}$ of heat and performs $200	ext{ J}$ of work. What is the change in internal energy of the system?

Accepted Answer

According to the First Law of Thermodynamics: $$\Delta Q = \Delta U + W$$ $$500	ext{ J} = \Delta U + 200	ext{ J}$$ $$\Delta U = 500 - 200 = 300	ext{ J}$$

Thermodynamics

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