The Concentration of Br^- in a Sample of Seawater Is

The concentration of Br^- in a sample of seawater is 8.3 × 10^{- 4} M. If a liter of seawater has a mass of
1) 0 kg, the concentration of Br^- - is ppm.

A) 0.066
B) 8.3
C) 8.3 × 10^{- 6}
D) 66
E) 0.83