Question

The molecular weight of a gas is $45$. Its density at $STP$ is

• A. $22.4$
• B. $11.2$
• C. $5.7$
• D. $2.0$

Answer 1

Answer: (D)

The density of gas$=\frac{\text{molecular wt.of metal}}{\text{volume}}$
$=\frac{45}{22.4}=2g/L$