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4.48 L of an ideal gas at STP requires 1...

4.48 L of an ideal gas at STP requires 12 cal to raise the temperature by `15^(0)C` at constant volume. The `C_(P)` of the gas is ____ cal

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The correct Answer is:
6
At constant volume heat released `= nC_(v)dT`
So `12 = (4.48)/(22.4) xx C_(v) xx 15, C_(v) = 4` cal/mole
We know that `C_(p) C_(V) + R = 4 + 2 = 6` cal/mole
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