A horse weighs 240 kg. If its running at a speed of 18 m/s, what's the linear momentum of the horse

Your friend offers to show you an intrusive igneous rock. which of the following would you expect to see?

All of the following are part of the biosphere except

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.