Question

Calculate the mass water produced by the complete combustion of 500g methane(CH4).​

Answer 1

Answer:

First wright the chemical reaction, then balance it. It will be;

CH4 + 2O2 will form 2H2O + CO2

Now, you can see stoichiometric coffecients for methane is 1, oxygen is 2, water is 2 and carbon dioxide is 1.

This means 1 mole of methane when reacts with 2 moles of oxygen forms 2 moles of water and 1 mole of carbon dioxide.

So, 0.25 moles of methane will produce 0.50 moles of water.

Mass of 0.50 moles of water is 9gm. As 1 mole of water (H20) have (1×2 + 16) gm = 18 gm mass.

Note; mass number of Hydrogen is 1 and oxygen is 16.

Explanation:

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Answer 2

Answer:

18 gram mass of water is produced by the complete combustion of 500g methane