5. The activation energy of a chemical reaction a. is supplied by a catalyst.
b. is released at the end.
c. starts the reaction.
d. changes with time.

Name the element in group 17, period 2. (periodic table)

Achemist 16 drop copper metal from copper chloride solution. the chemist place is 0.50 g of aluminum foil in a solution containing 0.75 g of copper (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction?

If a solution had a ph of 7 what is the solution