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

##### 1 Answer

Mar 14, 2016

#### Explanation:

- 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)# - 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# # ? - Then, find the molar mass of
#H_2# to use to find the mass of#H_2# needed to produce#CH_4# . - The answer is
#2.4# grams of#H_2#