The Mass number is 65, Copper-65
To find the mass number you add the number of protons to the number of neutrons.
Answer:
Sodium chloride
Sodium chloride is by a huge margin the most common chlorine compound, and it is the main source of chlorine and hydrochloric acid for the enormous chlorine-chemicals industry today.
Answer:
the answer would be C adding a chemical catalyst
Explanation:
