What happens when a catalyst is used in a chemical reaction? a. the reaction rate increases. b. the reaction rate decreases. c. the reaction rate does not change. d. the reaction process decreases.

What does x represent in the formula for the compound xcl4?

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution. calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.