Question

For the reaction C+ 2H2 → CH4, how many moles of carbon are needed to make 193.2 grams 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
Hydrogen
Carbon
Molar Mass
12

Answer 1

Below

Step-by-step explanation:

From the balanced equation you can see that the moles of carbon = the moles of CH4 produced ....a 1:1 ratio

so find the # of moles of CH4 in 193.2 gm

Using periodic table

you can find that CH4 has a molar weight of 16.043 g/mole

193.2 gm / 16.043 g/mole = ~ 12 moles of C required