Problem 1. Convert a concentration of 32 ppb of O3 to (a) molecules cm-3 and (b) g m-3. Assume 25 C and a pressure of 1.0 atm.

Problem 2. Convert a concentration of 6.0x1014 molecules cm-3 of NO2 to (a) ppm and (b) molarity. Assume 25 C and a pressure of 1.0 atm.

Problem 3. The average outdoor concentration of CO is 1000 g m-3. What is the concentration of CO in (a) ppm and (b) molecules cm-3? Assume a temperature of 17 C and a pressure of 1.04 atm.