Calculate the increase in internal energy of system when 40 joule heat is supplied and the work done by a system is 8 joule

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Calculate the increase in internal energy of system when 40 joule heat is supplied and the work done by a system is 8 joule

ChemistryThermodynamics (C)JEE Main

Options:

A 25 J
B 30 J
C 32 J
D 28 J

Solution:

1432 Upvotes Verified Answer

The correct answer is: 32 J

q = 40 J

w = - 8 J

(work done by the system)

Δ E = q + w = 40 - 8 = 32 J

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