Question

What is the density of $N_2$ gas at $227°C$ and 5.00 atm. pressure ? (R = 0.082 L Atm $K^{-1} mol^{-1}$)

• A. 1.40 g/mL
• B. 2.81 g/mL
• C. 3.41 g/mL
• D. 0.29 g/mL

Answer 1

Answer: (C)

3.41 g/mL

Answer 2

Given,
$P = 5 a t m$
$T = 5 0 0 K$
$M = 2 8 g / m o l$
We know,
$\rho=\frac{ P M }{ R T }$
$\rho=\frac{5 \times 28}{0.0821 \times 500}$
$\rho=3.41 g / ml$