The density of nitrous oxide, $N X_{2} O$ ( $N = 14$ , $O = 16$ ), at STP in $g L^{- 1}$ (molar volume 22.4 L/mol) is? Give the answer to two decimal places.

Numerical answer type, answer in g/L, tolerance 0.01.

Answer: 1.96 g/L

The molar mass of

N X_{2} O

2 (14) + 16 = 44 g mo l^{- 1}

. Density at STP

= M / V_{m} = 44/22.4 = 1.9643 g L^{- 1}

, i.e.

1.96 g L^{- 1}