What percentage of the earth is water?

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.

What is the mass of 0.46 mol of mgcl2

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa