Physics

Problem

An engine takes in 5 mole of air at

20^\circ\text{C}

and 1 atm, and compresses it adiabatically to

1/10^{\text{th}}

of the original volume. Assuming air to be a diatomic ideal gas made up of rigid molecules, the change in its internal energy during this process comes out to be

X

kJ. The value of

X

to the nearest integer is _____.

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