In an exothermic reaction, the enthalpy change is negative. which of the following is also true for an exothermic reaction? a. the products have a lower potential energy than the reactants. b. the reactants have a lower potential energy than the products. c. the potential energy of both the reactants and products is the same. d. the potential energy decreases, and then increases sharply at the end of the reaction.

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt

•hydration •dissociation •dissolving which one goes to which