A balloon contains $500\,{m^3}$ of helium at $27°C$ and $1$ atmosphere pressure. The volume of the helium at $-3°C$ temperature and $0.5$ atmosphere pressure will be ..... $m^3$
A$500$
B$700$
C$900$
D$1000$
Medium
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C$900$
c $\frac{{{P_1}{V_1}}}{{{T_1}}} = \frac{{{P_2}{V_2}}}{{{T_2}}}$
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If $\alpha$ moles of a monoatomic gas are mixed with $\beta$ moles of a polyatomic gas and mixture behaves like diatomic gas, then [neglect the vibrational mode of freedom]
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