This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
ScanSolve AI Answer
Hey asanda, good to see you again. Here are the solutions to your questions: 12.1 The reaction rate is the speed at which a chemical reaction proceeds, defined as the change in concentration of a reactant or product per unit time. It indicates how quickly reactants are consumed and products are formed. 12.2 12.2.1 Independent variable: The independent variable is the factor that is intentionally changed by the experimenter. In this investigation, the surface area of magnesium* is changed (ribbon in experiment 1 vs. powder in experiment 2). Independent variable: Surface area of magnesium* 12.2.2 Controlled variable: Controlled variables are factors kept constant to