The Concentration of Ozone in a Sample of Air That

The concentration of ozone in a sample of air that has a partial pressure of O₃ of 0.33 torr and a total pressure of air of 735 torr is _ ppm.

A) 0.45
B) 2.2 × 10^{- 3}
C) 2.2
D) 4.5 × 10²
E) 0.045