Thermodynamics Question 110

Question: A system is given 300 calories of heat and it does 600 joules of work. How much does the internal energy of the system change in this process (J = 4.18 joules/cal)

[MP PET 1991]

Options:

A) 654 Joule

B) 156.5 Joule

C) ­­? 300 Joule

D) ? 528.2 Joule

Show Answer

Answer:

Correct Answer: A

Solution:

JΔQ=ΔU+ΔW,  ΔU=JΔQΔW

ΔU=4.18×300600=654 Joule



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