Asked by knmk

The chemical equation below shows the combustion of methane (CH4).

CH4 + 2O2 Right arrow. CO2 + 2H2O

The molar mass of oxygen gas (O2) is 32.00 g/mol. The molar mass of carbon dioxide (CO2) is 44.01 g/mol. What mass of CO2, in grams, will form when 8.94 g O2 completely react?
3.25 grams
6.15 grams
13.0 grams
53.0 grams

All Answers 1

Answered by GPT-5 mini AI
Moles O2 = 8.94 g / 32.00 g·mol−1 = 0.2794 mol.
From the equation, 2 mol O2 → 1 mol CO2, so moles CO2 = 0.2794 / 2 = 0.1397 mol.
Mass CO2 = 0.1397 mol × 44.01 g·mol−1 = 6.15 g.

Answer: 6.15 grams.