Answer:
Mass of methane burnet 10.025 g.
Step-by-step explanation:
Given data:
Mass of CO₂ produced = 27.5 g
Mass of methane burnet = ?
Solution:
Balanced chemical equation.
CH₄ + 2O₂ → CO₂ + 2H₂O
First of all we will calculate the number of moles of CO₂ produced.
Number of moles = mass/ molar mass
Number of moles = 27.5 g/ 44 g/mol
Number of moles = 0.625 mol
Now we will compare the moles of CO₂ with CH₄.
CO₂ : CH₄
1 : 1
0.625 : 0.625
0.625 moles of CH₄ are burnet.
Mass of methane burned:
Mass = number of moles × molar mass
Mass = 0.625 mol × 16.04 g/mol
Mass = 10.025 g