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Surface Energy

A sample of a...

Question

A sample of a gas in a cylinder contracts by $7.5$ litre at a constant pressure of $5.0$ atmosphere. How much work is done on the gas by the surroundings?

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Solution

We have,
workdone = $- P d V$
$w = - 5 * 7.5 = 37.5 l i t r e - a t m$
or, $w = 37.5 * 101.3 = 3798.75 J$

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