Calculate standard molar volume of He, if measured density of He at STP is 0.1784 g / L

Question

Calculate standard molar volume of He, if measured density of He at STP is 0.1784 g / L (A) 11.2 L (B) 5.6 L (C) 2.8 L (D) 22.4 L

Tardigrade Admin · Accepted Answer

Standard molar volume is the volume occupied by 1 mole of a gas at STP 0.1784 g of He occupies volume =1 L ∴ 4 g ( i.e. 1 mole ) of He occupies the volume =(4/0.1784)=22.4 L

Q. Calculate standard molar volume of $He$ , if measured density of $He$ at STP is $0.1784 g / L$

$11.2 L$

$5.6 L$

$2.8 L$

$22.4 L$

Standard molar volume is the volume occupied by $1$ mole of a gas at STP

$0.1784 g$ of He occupies volume $= 1 L$

$∴ 4 g$ ( i.e. 1 mole ) of He occupies the volume

$= \frac{4}{0.1784} = 22.4 L$

Q. Calculate standard molar volume of He, if measured density of He at STP is 0.1784g/L

11.2L

5.6L

2.8L

22.4L