2 C3H6(g) + 9 O2(g)  6 CO2(g) + 6 H2O(l)2.599C3H6(g)3.636O2(g)(a) Which is the limiting reactant? (Example: type C3H6 for C3H6(g)) is the limiting reactant.(b) How many grams of CO2(g) form? g of CO2(g) form. (c) How many grams of H2O(l) form? g of H2O(l) form. (d) How many grams of the excess reactant remains after the limiting reactant is completely consumed? g of excess reactant remain.