help with this question in chem 11

Question

For the reaction C + 2H₂ → CH₄, how many grams of carbon are required to produce 10.9 moles of methane, CH₄ ?

Round your answer to the nearest tenth. If you answer is a whole number like 4, report the answer as 4.0

Use the following molar masses. If you do not use these masses, the computer will mark your answer incorrect.:

Element	Molar Mass
Hydrogen	1
Carbon	12

Answer 1

In the stoichiometry of the given reaction, 1 mole of C produces 1 mole of CH₄. This means that 10.9 moles of C are needed to produce 10.9 moles of CH₄. Since the molar mass of C is 12 g/mole, then the mass of of 10.9 moles of C is (12)(10.9) = 130.8 g.