Answer: I just took the test, the answer is A.
Explanation:
Answer:
The sum of the protons and neutrons
Explanation:
mass number= proton number + neutron number
Answer,
For example, silver ion can be precipitated with hydrochloric acid to yield solid silver chloride. Because many cations will not react with hydrochloric acid in this way, this simple reaction can be used to separate ions that form insoluble chlorides from those that do not.