Two moles of helium are mixed with \( n \) moles of hydrogen. If \( \frac{C_{P}}{C_{V}}=\frac{3}....

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Two moles of helium are mixed with \( n \) moles of
\( \mathrm{P} \)
hydrogen. If \( \frac{C_{P}}{C_{V}}=\frac{3}{2} \) for the mixture, then the value
W
of \( n \) is
(1) \( 3 / 2 \)
(2) 2
(3) 1
(4) 3


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