Classify the following substances as element, mixture or compound a. limestone b. diamond c. soil d. urine e. bronze f. sugar g. gold h. soap i. milk j. air k. neon

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false

What happens to the concentration of hydronium ions as the ph of a solution increases? a. hydronium ion concentration stays the same b. hydronium ion concentration decreases c. hydronium ion concentration increases