When a calorimeter is used, no energy is exchanged between the contents of the container and the outside air. if an endothermic reaction is conducted inside a calorimeter filled with water, which of the following statements is true about the reaction?

a. the water decreases in temperature as the reaction absorbs thermal energy.
b. the potential energy of the products is lower than that of the reactants.
c. the thermometer in the water will show an increase in temperature.
d. the total energy of the reaction increases.