How many grams of carbon dioxide are produced by the combustion of 30 grams of CH4 with excess Oxygen?

Answer 1

Balanced equation: CH₄ + 2O₂ ==> CO₂ + 2H₂O

Use dimensional analysis and stoichiometry:

30 g CH₄ x 1 mol CH₄ / 16 g x 1 mol CO₂ / mol CH₄ x 44 g CO₂/mol = 82.5 g CO₂ = 80 g CO₂ (1 sig. fig)