Chapter 11, Problem 24E

The Henry’s law constant for ${\text{O}}_{\text{2}}$ is $1.3\times {10}^{-3}$ M/ atm at 25°C. Assuming ideal solution behavior, what mass of oxygen would be dissolved in a 40-L aquarium at 25 °C, assuming an atmospheric pressure of 1.00 atm, and that the partial pressure of ${\text{O}}_{\text{2}}\text{is 0}\text{.21}$ atm?