Maximum Dissolved O2 in 1L Water @ 25C with 40 mmHg Partial Pressure?

[TypeFun]

Homework Statement

What mass of O2 can dissolve in 1L of water @ 25 C if the partial pressure of O2 is 40 mmHg?

Homework Equations

Henry's Law:
partial pressure = kH*concentration
kH of O2 = 769.2 L*atm/mol

The Attempt at a Solution

40 mmHg / 769.2 = concentration

 

[Borek]

Check your units.