Which of the following statements is true about catalysts? and why? . a. catalysts slow down the rate of chemical reactions. b. all catalysts are enzymes. c. catalysts are used up during a chemical reaction. d. catalysts lower the activation energy of a chemical reaction

How can you use chemical equations to predict the products of the reaction you can carry out?

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

For each of the following compounds, decide whether the compound's solubility in aqueous solution changes with ph. if the solubility does change, pick the ph at which you'd expect the highest solubility. you'll find ksp data in the aleks data tab. compounds does solubility change with ph