Question: how many moles of oxygen will be consumed when 1.70 moles of c2h6 are burned?
Answer: According to the reaction: 2 mol of C2H6 produce 4 mol of CO2 5.70 mol of C2H6 ‒ x moles of CO2 So, number of moles of CO2 produced by combustion of 5.70 mol of ethane equals: Answer: n(CO2) = 11.4 mol.