How does the energy needed to overcome the energy barrier compare with the overall change in energy for this reaction?

If 200.0g of copper(ll) sulfate react with an excess of zinc metal, what is the theoretical yield of copper

If you want to create an electrical current, which situation would produce a solution capable of this

Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.