3 1 In a particular process, the compression work done on a system is equal to 3

Question

3 1 In a particular process, the compression work done on a system is equal to 387 J. The change in the internal energy of the system is 125 cal. Which of the following statements is true about heat? 136 J of heat was transfered from the system to the surroundings. 262 J of heat was transfered from the system to the surroundings. 512 J of heat was transfered from the surroundings to the system. 136 J of heat was transfered from the surroundings to the system. 262 J of heat was transfered from the surroundings to the system.

Explanation / Answer

w = 387 J
delta U = 125 cal
= 523 J
use,
delta U = q +w
523 = q + 387
q = 136 J

since, q > 0
so, heat is given to the system from surrounding

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