At a certain temperature, the degrees of freedom per molecule for gas is 8. The gas performs 150 J of work when it expands under constant pressure. The amount of heat absorbed by the gas will be _________ J.
Answer (integer)
750
Solution
<p>$f = 8$</p>
<p>$W = P\,dV = 150$</p>
<p>$Q = W + \Delta U$</p>
<p>$= P\,dV + {f \over 2}\,PdV$</p>
<p>$Q = 5 \times 150 = 750\,J$</p>
About this question
Subject: Physics · Chapter: Thermodynamics · Topic: Zeroth and First Law
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