Which of the following laboratory procedures best illustrates the law of conservation of mass? (Assume the product of the reaction includes the mass of any unused reactants.) (3 points) a Recording the rise in water level when a 25 g piece of wood is placed in 200 mL of water b Synthesizing 36 g of H2O by combining 4 g of H2 and 32 g of O2 c Heating 32 g of S and 56 g of Fe to form 80 g of FeS d Measuring precisely 0.495 g of sulfur powder