If the total mass of the products of a reaction is 90 gram, what was the total mass of the reactants

How to convert a density of 0.791g/cm3 to lb/ft3

How are evaporation and sublimation similar? a both involve the formation of a gas. b both release energy to the surroundings. c both take place throughout a solid. d both take place at the surface of a liquid.

Categorize them by metal, nonmetal, in periodic tableductilenon-ductilemalleableoften gain electrons easilygood conductorpoor conductorcan be liquidselements