Some Basic Concepts Of Chemistry

\(\text {During estimation of nitrogen by Dumas' method of compound } \mathrm{X}(0.42 \mathrm{~g})\)

_________mL of $\mathrm{N}_2$ gas will be liberated at STP. (nearest integer)

(Given molar mass in $\mathrm{g}~ \mathrm{mol}^{-1}: \mathrm{C}: 12, \mathrm{H}: 1, \mathrm{~N}: 14$ )