What must be done after determining the moles of a reactant to find the products?

To find the products of a chemical reaction after determining the moles of a reactant, it is essential to use the balanced equation. The balanced equation represents the stoichiometric relationships between the reactants and products in a chemical reaction.

By referring to the balanced equation, you can identify the ratios in which the reactants combine and the products are formed. This is crucial because chemical reactions adhere to the principle of conservation of mass, meaning the amount of matter is neither created nor destroyed.

Using the balanced equation allows you to calculate how many moles of each product will be formed based on the number of moles of the reactants used. This step provides a clear pathway for predicting the outcomes of the reaction and ensuring that the calculations adhere to the stoichiometric principles established by the equation.

Other options may provide additional information related to the reaction process but are not necessary to determine the products. For example, measuring temperature change or the final volume of a solution can give insights into reaction conditions or concentration but do not directly relate to finding product quantities. Similarly, determining the states of each product is important for understanding the reaction outcome but does not involve calculating how many of each product you will get, which is the key focus after finding moles