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  4. A large flask contains air at 27° C . In order to expel half the mass of air from the flask, the flask should be heated upto what temperature:-

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Q. A large flask contains air at $27^\circ C$ . In order to expel half the mass of air from the flask, the flask should be heated upto what temperature:-

NTA AbhyasNTA Abhyas 2020

Solution:

Pressure and volume are constant
$\mu T=$ constant
$\mu _{1}T_{1}=\mu _{2}T_{2}$
$\Rightarrow \mu \left(\right.300\left.\right)=\left(\frac{\mu }{2}\right)T_{2}$
$T_{2}=600K=327^\circ C$