What do you mean by chemistry

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

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

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?