Question

The density of a gas is 1.63 g/L at stp. what is its molar mass

Answer 1

Answer : The molar mass of the gas is 36.51 g.

Explanation: According to Avogadro's law,  1 mole of every gas at STP occupies 22.4 litres. That is molar mass of the gas occupies 22.4 liters at STP.

As given, at STP, 1 liter of the gas has mass 1.63 g.

22.4 liters of the gas has mass =$1.63\times 22.4= 36.51$ g

Answer 2

Given:

Density = 1.63 g / L

STP

To find:

Molar mass

Solution:

By Avogadro's law,  

"One mole of gas at STP occupies 22.4 litres"

Hence,

It applies the same for the molar mass also.

And so,

Molar mass = Density * 22.4

1.63 * 22.4

Molar mass = 36.512 g