Question

How many grams of methane are produced from the complete reaction of 5.15 moles of carbon monoxide in the reaction `CO + 3H_2 -> H_2O + CH_4`?

Answer 1

It is revealed from the given balanced Eq that
1 mole of `CO` produces 1 mole `CH_4` when it reacts completely
So 5.15 mole `CO` will produce 5.15 mole `CH_4`
molar mass of `CH_4 = 16gmmol^-1`
Mass of 1 mole `CH_4 = 16g`
So mass of 5.15 mole `CH_4 = 5.15xx16=82.4g`