What is the total number of moles of solute in 250 milliliters of a 1.0 m solution of nacl? 1. 1.0 mole 2. 0.25 mole 3. 0.50 mole 4. 42 moles

Which substance absorbs 58.16 kj of energy when 3.11 mol vaporizes? a)ch4 b)h2s c)co2 d)nacl

How will the emission of an alpha particle affect the atomic number of an atom

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.