What is the mass of water that is released as a result of burning 160 g of methane CH4?

univerkov | June 20, 2021 | education

Let’s write the reaction equation:

CH4 + O2 → CO2 + 2H2O

Let’s find the number of moles of methane:

n (CH4) = m (CH4) / M (CH4) = 160 g / 16 g / mol = 10 mol.

Let’s find the number of moles of water:

n (H2O) = 2 * n (CH4) = 2 * 10 mol = 20 mol.

Let’s find the mass of water:

m (H2O) = n (H2O) * M (H2O) = 20 mol * 18 g / mol = 360 g.

Answer: 360 g.

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