Perform the following calculation for air concentration. Acetone: 42.0 ppm = ____ mg/m3 Perform the following calculation for air concentration. Sulfuric Acid: 2.5 mg/m3 = ____ ppm Perform the following calculation for air concentration. Formaldehyde: 4.0 mg/m3 = ____ ppm

Perform the following calculation for air concentration. Acetone: 42.0 ppm = ____ mg/m3

Perform the following calculation for air concentration. Sulfuric Acid: 2.5 mg/m3 = ____ ppm

Perform the following calculation for air concentration. Formaldehyde: 4.0 mg/m3 = ____ ppm

Perform the following calculation for air concentration. Benzene: 3.0 ppm = ____ mg/m3

Discuss the similarities and differences that exist between the three basic types of occupational exposure limits (OELs). Describe how each type of OEL is used to control occupational exposures, and provide at least one specific chemical for which each type of OEL has been established.

Your answer must be a minimum of 200 words in length.