A cylinder of fixed capacity 22.4 litre ...

A cylinder of fixed capacity 22.4 litre contains helium gas at standard temperature and pressure. What is the amount of heavy needed to raise the temperature of the gas in the cylinder by `30^(@)C` ? `(R=8.31J "mol"^(-1)K^(-1))`

Text Solution

Verified by Experts

1 mole of any gas occupies 22.4 litres.
Since the volume of cylinder is fixed, the heat required
`nC_(v)dT`
Here Helium is monoatomic gas so `C_(v)=(3)/(2)K`
Heat required `=1xx1.5Rxx30=45R=374.5J`

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