Why are electronegative values helpful in determining if a bond is iconic, polar covalent, or just covalent?

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4al(s)+3o2(g)→2al2o3(s) a) 1 molal, 1 mol o2 b) 4 molal, 2.6 mol o2 c) 16 molal, 13 mol o2 d) 7.4 molal, 6.5 mol o2

Which are forms of frozen water? check all that apply. dew frost hail rain sleet

Which type of intermolecular force is pbr3