The chart shows the results of a conservation-of-mass experiment. The most accurate trial for this experiment was — a
Trial 1
b
Trial 2
c
Trial 3
d
Trial 4

Which best describes the activation energy of a chemical reaction? a. the combined energy of all the reactants b. the amount of energy required for a reaction to occur c. the difference in energy between products and reactants d. the potential energy stored in the bonds of reactants and products