What is the density of a mineral with a mass of 41.2 g and a volume of 8.2 cm?

What is the molar mass of potassium nitrate, kno3

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?

A5 mole sample of liquid acetone is converted to a gas at 75.0°c. if 628 j are required to raise the temperature of the liquid to the boiling point, 15.600 kj are required to evaporate the liquid, and 712 j are required to raise the final temperature to 75.0°c, what is the total energy required for the conversion?