Answer to Question #312392 in General Chemistry for moo

Question

What volume in litres does 350.5g of methane (CH4) gas occupy at STP.

Answer 1

Solution:

The molar mass of methane (CH₄) is 16 g/mol

Therefore,

Moles of CH₄ = (350.5 g CH₄) × (1 mol CH₄ / 16 g CH₄) = 21.906 mol CH₄

At STP, one mole of any gas occupies a volume of 22.4 L.

Thus, 21.906 mol of CH₄ occupies:

(21.906 mol CH₄) × (22.4 L CH₄ / 1 mol CH₄) = 490.7 L CH₄

Answer: 490.7 liters of methane (CH₄)