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If gas is expanded freely from 1 litre to 5 litres at a temperature of 60-degree centigrade what is the work done?

If gas is expanded freely from 1 litre to 5 litres at a temperature of 60-degree centigrade what is the work done? Correct Answer 0

When gas is expanded freely in a vacuum there is zero pressure exerted. The formula for work done is given by pressure X change in volume = 0 x 4. So the work done is zero in the process of free expansion.

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