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  • At a certain temperature, the degrees of freedom per molecule for gas is 8 . The gas performs <img alt="150 \mathrm{~J}" src="https://entrancecorner.oncodecogs.com/gif.latex?150%20%5Cmathrm%7B%7EJ%

At a certain temperature, the degrees of freedom per molecule for gas is 8 . The gas performs 150 \mathrm{~J} of work when it expands under constant pressure. The amount of heat absorbed by the gas will be ___________J.

Option: 1

750


Option: 2

-


Option: 3

-


Option: 4

-


Answers (1)

best_answer

\mathrm{f=8, v=\frac{2+f}{f}=\frac{5}{4} }

\mathrm{W=p \Delta v=150 \mathrm{~J} }
From first law of thermodynamic

\mathrm{Q =\Delta U+W }

    \mathrm{=\frac{p \Delta V}{V-1}+p \Delta V }

    \mathrm{=\frac{150}{\frac{5}{4}-1}+150 }

\mathrm{Q =750 \mathrm{~J}}

The amount of heat absorbed by the gas will be \mathrm{750 \mathrm{~J}}

Posted by

Irshad Anwar

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