Answer :


Volume of hydrogen gas=1cc

We know that

At NTP, the volume occupied by 1 mole of gas molecule=22.4litres=22400

As hydrogen is a diatomic gas, no. of degree of freedom for one molecule=5 (3 translational and 2 rotational)

No. of molecules in one mole of gas=

No. of molecules in 22400cc of hydrogen=

no. of molecules in 1cc of hydrogen=

Since one molecule has 5 degrees of freedom, therefore no. of degrees of freedom in n molecules

Therefore total number of degrees of freedom of molecules of hydrogen is

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