What will be the volume of a gas when 3 Litres of it is cooled down from 27 degree Celsius 273 degree Celsius at constant pressure?

A gas occupies 3 litres at 0∘C . What volume will it occupy at 20∘C pressure remaining constant?

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Charles Gas law:

$\frac{V1}{T1}=\frac{V2}{T2}$
$\frac{V1}{T1}\times T2=V2$
$\frac{3L}{290K}\times 253K=V2$
V2=2.78 litres

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