The molar specific heat at constant pressure for a monoatomic gas is
A$\frac{3}{2}R$
B$\frac{5}{2}R$
C$\frac{7}{2}R$
D$4 \,R$
Medium
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B$\frac{5}{2}R$
b ${C_P} - {C_V} = R$
$\Rightarrow$ ${C_P} = R + {C_V} = R + \frac{f}{2}R = R + \frac{3}{2}R = \frac{5}{2}R$
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