Calculate the saturation level of ClO2 in water at 1 atm at various
temperatures in PPM, given these values for Henry's Constant
10 Deg C	16.43 g/L mmHg
15 Deg C	13.43
20 Deg C	11.05
25 Deg C	9.15
30 Deg C	7.63
35 Deg C	6.39
	
45 Deg C	4.51

Henry's law states that at equilibrium between a solution phase and a
gas phase, theconcentration dissolved gas in the solution is
proportional to the partial pressure of that gas in the gas phase:

P_i = K * [G]

where P_i is the partial pressure of the gas
K is the Henry's Law constant
[G] is the concentration of the gas in the solution.

That, plus the fact that 1 atm = 760 mm Hg should be enough to allow
you to solve this problem.