Question

What will be the standard molar volume of He, if its density is $0.1784g/L$ at STP?

• A. $11.2L$
• B. $22.4L$
• C. $5.6L$
• D. $2.8L$

Answer 1

Answer: (B)

$22.4L$

Answer 2

(2) : Standard molar volume is the volume occupied by 1 mole of a gas at STP.

$0.1784g$of He occupies volume= 1 L

$4g(1mole)$ of He occupies$\frac{4}{0.1784} = 22.4L$