During estimation of nitrogen by Dumas' method of compound ${\rm{X}}(0.42\;{\rm{g}})$
_______ mL of ${{\rm{N}}_2}$ gas will be liberated at STP. (nearest integer) (Given molar mass in $\left. {{\rm{gmo}}{{\rm{l}}^{ - 1}}:{\rm{C}}:12,{\rm{H}}:1,\;{\rm{N}}:14} \right)$
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_______ mL of ${{\rm{N}}_2}$ gas will be liberated at STP. (nearest integer) (Given molar mass in $\left. {{\rm{gmo}}{{\rm{l}}^{ - 1}}:{\rm{C}}:12,{\rm{H}}:1,\;{\rm{N}}:14} \right)$ 
