A sample of 250 g of water are heated from 40°C to 121°C, calculate the amount of heat energy absorbed. 552,000 Joules
100,416 Joules
638, 555 Joules
73,885 Joules

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.