Methylamine (CH3NH2) has a pKb of 3.36 at 298.0 K. How many millimoles of HCl must be added to 100.0 mL of a 0.100 M solution of methylamine to make a solution with pH of 10.0? Assume that the temperature and volume of the solution do not change during the addition.

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