What is the only intermolecular force present in nonpolar compounds?

Do polar molecules have ionic bonds?

The density of the solid phase of a substance is 0.90 g/cm3 and the density of the liquid phase is 1.0 g/cm3. a large increase in pressure will a. lower the freezing point b. raise the freezing point c. lower the boiling point d. raise the triple point e. lower the triple point

Balance the following reaction. as2s3 + 9o2 → 2as2o3 + so2