The Henry's Law Constant for N₂ in Water at 25

The Henry's law constant for N₂ in water at 25 °C is 6.0 × 10^-4 mol/kg⋅bar.What is the equilibrium concentration of N₂ in water when the partial pressure of N₂ is 586 mm Hg? (760 mm Hg = 1 atm = 0.9869 bar)

A) 1.4 × 10^-9 M
B) 1.8 × 10^-5 M
C) 4.6 × 10^-4 M
D) 7.7 × 10^-4 M
E) 7.9 × 10^-4 M