What is the realtionship between degree of polarity and the strength of imfs experiences by molecules?

Explanation:

The polarity of a molecule is given by the difference of electronegativity between the atoms that form that molecule.

In simple words, this difference will create inside the molecule areas with deficiency of electrons (positive pole) and areas with excess of electrons (negative pole).

Oposite poles attract to each other due to the oppisite charges, so when two polar molecules interact they form a dipole-dipole intermolecular force.

Explanation:

A carbon-12 atom has a mass defect of 0.09564 amu. What is its nuclear binding energy? Round to 3 significant figures. x 10 J per carbon-12 atom

First use the formula;

1 amu =934 MeV

therefore 0.09564 will have

934 x 934

= 89.3 MeV