How does adding an atom affect the position of existing atoms and lone pairs?

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 biosphere of the earth is made up of what compound? organic or inorganic?

What is the chemical formula for the compound formed between sodium and flour one