Question

For the reaction C + 2H₂ → CH₄, how many grams of hydrogen are required to produce 1.6 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.:

Answer 1

The molar mass of H₂ = 2.0 g/mol.

$m(H_2)=1.6\ mol(CH_4)×\frac{2\ mol(H_2)}{1\ mol(CH_4)}×\frac{2.0\ g(H_2)}{1\ mol(H_2)}=6.4\ g$

Answer: 6.4 g