A2.5 mg sample of magnesium powder is ignited with 2 mg oxygen in a sealed container. all of the magnesium is consumed and 4.15 mg of white solid magnesium oxide is formed .
find the mass of the unreacted oxygen

Nonmetal halogen family atmoic mass 35

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

Identify two types of chemical bonding in the source of dietary potassium