Question

How many moles of methane are produced when 25.1 moles of carbon dioxide gas react with excess hudrogen gas

Answer 1

CO2 + 4 H2=CH4 + 2 H2O
The ratio between CO2 and CH4 is 1 : 1
Moles CH4+25.1
The ratio between H2 and H2O is 4 : 2
Moles H2= 19.1 x 4/2= 38.2