According to the law of conservation of mass, the total mass of the reactants in a chemical reaction must equal the total mass of the products. In this scenario, Aria and Marcus can calculate the total mass of the products by adding together the mass of the sugar and the mass of the oxygen gas used in the reaction.
The mass of sugar is 1.80 grams, and the mass of oxygen gas is 1.92 grams.
Total mass of reactants = mass of sugar + mass of oxygen Total mass of reactants = 1.80 g + 1.92 g = 3.72 g
Therefore, Aria and Marcus would expect the total mass of all products formed from the burning of sugar with oxygen to be 3.72 grams. This is because, in a closed system, mass is conserved, and no mass is lost in the reaction.