What are q w and âe if a gas absorbs 200 j of heat and expand from 10 to 20 l at 27°c against a pressure of 1 atmosphere?
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Explanation:
q =+ 200 J
since it is a constant pressure process
w = P* (V2 - V1)= 10^5*(20-10)*10^-3
= 10^3 = +1000 J
as per 1st law of thermodynamics
∆E = q - w = 200 -1000 = -800 J
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