posted by la la .
interpret the equation in terms of relative numbers of moles,volumes of gas at STP,and masses of reactants and products.
You don't have an arrow; therefore, no one can tell what is a product and what is a reactant. The "so-called" equation means
1 mol C2H4 (28 grams), 1 mol H2O(18 grams) and 1 mol O2(32 grams). 1 mol of a gas occupies 22.4L at STP.