During estimation of nitrogen present in an organ compound by Kjeldahl's method, the ammon evolved from

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52. During estimation of nitrogen present in an organ compound by Kjeldahl's method, the ammon evolved from $0.73 g$ of the compound neutraliz $100 mL$ of $0.5 M H _{2} SO _{4}$. If $0.73 g$ of this organ compound is used in Duma's method, then $x$ of nitrogen$\left( N _{2}\right)$ is collected at $300 K$ and $623 m$ of $Hg$ pressure. The value of $x / 30$ is (Aqueous tension at $300 K$ is $15 mm$ an $\left.R=\frac{0.08 atm L}{m o l K}\right)$