Three students made multiple weighings of a copper cylinder, each using a different balance. describe the accuracy and precision of each student’s measurements if the correct mass of the cylinder is 47.32 g.

Avariable that is not being directly tested during an experiment should be

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.

Which is the solubility product expression for caf2(s)?  [ca2+]/[f–]2  [ca2+][f2–]  [ca]+[f]2  [ca2+][f–]2