How many neutrons are found in one potassium atom?.

Fossil fuels are organic compounds that are made from

No copying 15 pts how does a free-body diagram tell you about the net force on an object?

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.