What does nonmetals mean in chemistry

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

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.

What’s the theoretical yield of solid lead