Mass is a measure of the amount of matter in which of the following is true about mass?

What does the cell nucleus do or, how does it function?

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3

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.