Questions
A gas is at one atmospheric pressure with a volume 800 cm3 When 100 J of heat is supplied to the gas , it expands to 1 litre at constant pressure. The change in its internal energy is
a
80 J
b
- 80 J
c
20 J
d
- 20 J
detailed solution
Correct option is A
Ps=105N/m2W=PaV2−V1=105[1000−800]×10−8J=20JBy first law of thermodynamics,ΔU=Q−W=(100−20)J=80JTalk to our academic expert!
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Which of the following laws of thermodynamics defines internal energy?
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