Calculating and Measuring Chemical Reaction Rates

The video tutorial explains how to calculate the mean rate of a chemical reaction using different methods. It provides examples involving magnesium and hydrochloric acid, and calcium carbonate with hydrochloric acid. The tutorial demonstrates how to measure reaction rates by tracking product formation, reactant usage, and mass change over time. It also discusses how the rate of reaction decreases as the reaction progresses.

What is the significance of measuring the total mass of the flask and its contents during the reaction?

Explain how the rate of a chemical reaction changes over time according to the graph described.