How many grams of water can you make with 1 mole of methane?

since 1 mole of methane is getting used up to form 2 mole of water. molecular mass of water is 18. so 36 grams of water will be produced.

Explanation:

4+22→2+22

And since 16 grams of methane is approximately one mole of methane the above reaction produces approximately 2 moles of water.

Using the period table above calculate the accurate molecular mass of methane, one carbon plus four hydrogens, and the accurate molecular mass of the water molecule, two hydrogen plus one oxygen.

Find the balanced equation for the combustion of methane. ( provided above, but you will generally have to find the equation elsewhere for other reactions )

Since, for every molecule of methane the reaction gives you two molecules of water multiply the number of moles of methane in 16 grams by two to get the number of moles of water produced. Finally multiply that number of moles by the molecular mass of water.