the heat of fusion of a compound is 30.0 joules per gram. what is the number of joules of heat that must be absorbed by a 15.0 geam sample to change the compound from solid to liquid at its melting point

What layer of the atmosphere is directly above the troposphere?

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

There are approximately 15 milliliters (ml) in 1 tablespoon (tbsp). what expression can be used to find the approximate number of milliliters in 3 tbsp?