Chemical Thermodynamics Question 318

Question: If 50 calories are added to a system and system does work of 30 calories on surroimdings, the change in internal energy of system is

Options:

A) 20 cal

B) 50 cal

C) 40 cal

D) 30 cal

Show Answer

Answer:

Correct Answer: A

Solution:

  • $ q=\Delta E+w $

$ 50=\Delta E+30 $

$ \therefore \Delta E=20,cal $



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