Final answer:
The predicted quantity of precipitate a student calculated from stoichiometric calculations in a high school chemistry experiment is known as the theoretical yield.
Step-by-step explanation:
In a high school chemistry experiment, when a student uses stoichiometric calculations to predict the quantity of precipitate in a chemical reaction, the predicted quantity is referred to as the theoretical yield. A theoretical yield is the mass or moles of product that one expects to obtain from a chemical reaction, based on the complete conversion of the limiting reactant according to the balanced chemical equation.
In contrast, the actual yield is the amount of product actually obtained from the experiment, which is often less than the theoretical yield due to practical limitations such as side reactions, incomplete reactions, and loss of product during collection. The ratio of actual yield to theoretical yield, multiplied by 100, gives the percent yield, providing a measure of the efficiency of the reaction.