When iron combines with oxygen gas and forms rust, the total mass of the products... is the same as the mass of the reactants.

is less than the mass of the reactants.

depends on the reaction conditions.

is greater than the mass of the reactants.

22. a flask containing 450 ml of 0.50 m h2so4 was accidentally knocked to the floor. how many grams of nahco, do you need to put on the spill to neutralize the acid according to the following equation: h2so4(aq)+2 nahcos(aq) na,so(aq) +2 h20()+2 co2(g) d) 38 g a) 2.3 g b) 9.5 g c) 19 g