Question

For the reaction `C+2H_2 -> CH_4`, how many grams of hydrogen are required to produce 0.6 moles of methane, `CH_4`?

Answer 1

`2.40` grams `H_2`

Explanation:

1. Start by determining the mole ratio of `CH_4` and `H_2`; it can be on these form and use the appropriate ratio depending on your desired unit;
   `(1 mol CH_4)/(2 mol H_2)`
   or
   `(2 mol H_2)/(1 mol CH_4)`
2. Once known, multiply the value to the mole of `CH_4` as provided in the problem to find the mole of `H_2`;
   0.6 mol `CH_4` #`x`# ?
3. Then, find the molar mass of `H_2` to use to find the mass of `H_2` needed to produce `CH_4`.
4. The answer is `2.4` grams of `H_2`