In a solution, the solvent is the substance that dissolves another substance.
true
false

When balancing a chemical equation:

Will mark brainliest how many electrons can be held in the energy level n = 4?

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.