Project #39649 - perisolve308

1. How much space in cubic meters does air occupy at 32 degrees F, 720 mm Hg Pressure, if the same amount of air occupies 3 cubic meters at 78 degrees F and 760mm Hg pressure?

 

2. An employee is exposed to 20 ppm of carbon monoxide for 1 hour and 30 minutes; 100 ppm for 2 hours; 60 ppm for 45 minutes; and background levels of 3 ppm for the remainder of his 8 hour work shift. Determine if this employee’s exposure to CO exceeds the OSHA 8-hour TWA permissible exposure limit of 50 ppm.

 

3. An OSHA inspector collected an air sample for acetone. The sample was collected at 25 degrees C at 1 atm (760 mm Hg) for 3 hours and 37 minutes. The inspector submitted the sample to the laboratory for analysis and reported a sampling volume of 0.46 liters. What was the air-sampling rate for the vacuum pump used for collecting the sample?

 

4. For the scenario described in question 3, the lab reported that it found 546.5 micrograms of acetone on the sample. What was the airborne concentration of acetone (in ppm) in the area where the inspector collected the sample?

Subject Science
Due By (Pacific Time) 09/10/2014 02:00 pm
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