Stoichiometry limiting reagent: find the reagent in excess. then calculate the mass or volume of the products formed.1)50.0g each of HCl and Zn.2)35.0g each of sodium metal and water.3)40.0g of sodium bicarbonate and 6.0g of sulfuric acid.4)100.0g of ammoniun chloride and 50.0g of samarium hydroxide[Sm(OH)3.5)75.0g of sodium sulfite and 80.0g of hydrogen bromide.