Gas Homework Help

Question

How many kilograms of methane gas, CH₄, are in a 6.7 × 10⁵ L storage tank at STP? Report your answer rounded to the nearest kilogram, no decimals, and without units. 

Answer 1

molar mass CH₄ = 16 g / mole

6.7x10⁵ L x 1 mole / 22.4 L = 2.991x10⁴ moles

2.99x10⁴ moles x 16 g / mole x 1 kg / 1000 g = answer