Question

Methane combines with oxygen to produce carbon dioxide and water. how many moles of oxygfen are required if 3 moles of ch4 are used

Answer 1

CH4 + O2 -------> CO2 + H2O
BALANCE IT
CH4 + 2O2 ------> CO2 + 2H2O

So if 3 moles of CH4 has used the no. of moles of oxygen = 2*3 =6