A vessel contains $1$ mole of $O_2$ gas (molar mass $32$) at a temperature $T$. The pressure of the gas is $P$. An identical vessel containing one mole of $He$ gas (molar mass $4$) at a temperature $2T$ has a pressure of
A$P/8$
B$P$
C$2P$
D$8P$
Medium
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C$2P$
c Ideal gas equation $P V=n R T$
For $O_{2}$ gas$:$ $P=P, V=V, T=T.$
For $H e$ gas$:$ $P=P_{2}, V=V_{2}=V, T=T_{2}=2 T$
By comparing them $P_{2}=2 P$
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