What is the molar mass of a substance? A. The mass in grams of one mole of a substance

Or

B. The number of particles in one gram of a substance

What are the chemical names of these compounds? ke: mg3n2: reset next

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.

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa