what is the weight of 5.6 L of CH4 at stp

The molar mass CH4 is 16 g. 
As we known 1 mole of any gas at STP occupies 22.4 L of volume. 
Therefore, 16 g of CH4 gas occupies 22.4 L of volume
Therefore 22.4 L of gas has a mass = 16 g 
Mass of 5.6 L of gas = 16 × 5.6 / 22.4 
Hence, mass of 5.6 L of methane gas is 4 g. 

  • 1
What are you looking for?