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what amount of heat must be supplied to `2.0 xx 10^(-2) kg` of nitrogen (at room temperature ) to raise its temperature by `45^(@)C` at constant pressure (Molecular mass of `N_(2) = 28 , R = 8.3 J mol^(-1) k^(-1))`

Text Solution

Verified by Experts

The mass of the gas `=2.0 xx 10^(-2) kg =20 g`
This mass of the gas is equivalent to
`(20)/(28) `mole `=(5)/(7) ` mole
Now the amount of heat required
`= m xx C_(p) xx `Increases in termperature
`=(5)/(7) xx 8.3 xx 45 = 266 .79J`
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