Question

balance the equation c2h4(g)+o2(g)---c(s)+h2o

Answer 1

1 C2H4(g) + 3 O2(g) ---> 2 CO2(g) + 2 H2O(g) 0.821 moles C2H4 x (3 moles O2 / 1 mole C2H4) = 2.46 moles O2 Therefore, the answer is 3