Please help me with these chemistry questions. Equations to solve the problem
number of moles = given mass /gram formula mass
Molarity = moles of solute / liter of solution​

13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.