8) Which compound contains polar covalent bonds?
a) MgCl2
b) BaF2
c) CHE
d) SiO2
e) O2

The molar mass of a substance is defined as the mass of 1 mol of that substance, expressed in grams per mole, and is equal to the mass of 6.022 × 10 23 atoms, molecules, or formula units of that substance.

Answersublimation;

H tricky one let me think and get back to u