How can i use the periodic table as a tool to understand the number and structure of subatomic particles in an atom?

What was the procedure by which case united states vs lopez went to court

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland