Chapter 10, Problem 66QAP

The Henry's law constant for the solubility of radon in water at is $9.57\times {10}^{-6}$ M/mm Hg. Radon is present with other gases in a sample taken from an aquifer at 30°C. Radon has a mole fraction of $2.7\times {10}^{-6}$ in the gaseous mixture. The gaseous mixture is shaken with water at a total pressure of 28 atm. Calculate the concentration of radon in the water. Express your answers using the following concentration units.

(a) molarity

(b) ppm (Assume that the water sample has a density of 1.00 g/mL.)