Answers (1)

The heat capacity of a substance tells us how much heat is required to raise a certain amount of the substance by one degree. For a gas we can define a molar heat capacity C - the heat required to increase the temperature of 1 mole of the gas by 1 K.

$Q=n C \Delta T$
The value of the heat capacity depends on whether the heat is added at constant volume, constant pressure, etc.
Heat Capacity at Constant Volume
$\mathrm{Q}=\mathrm{n} \mathrm{C}_{\mathrm{V}} \Delta \mathrm{T}$
For an ideal gas, applying the First Law of Thermodynamics told us that:
$Q=\frac{3}{2} n R \Delta T$

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