<p> North Carolina Occupational Safety and Health Education & Research Center University of North Carolina at Chapel Hill</p><p>INSTITUTE PRETEST</p><p>The purpose of this pretest is to determine the level of your math skills and readiness status to use a scientific calculator accurately. You should be able to complete the following types of problems before you attend institute classes that requires you to bring a scientific calculator and to be familiar with its use.</p><p>You may complete this pretest at your leisure, using reference books and a calculator. For those of you who have difficulty with this pre test, please consider attending Math Review and Use of Scientific Calculator on the Sunday prior to the course from 2:00-4:00 PM at the meeting site. </p><p>Dr. Nelson W. Couch will guide you through the review on Sunday before you are required to use these techniques in your class at the institute. Be sure to bring a scientific calculator. If you need to purchase one, the Texas Instruments TI- 30Xa calculator (click here for picture) will be the calculator used during these sessions.</p><p> 4005 1. If V DUCT VP DUCT solve for VPDUCT.</p><p>2. If Q = AV solve for V.</p><p>3. If SPH = (1 + FH)VPDUCT , solve for FH.</p><p>4. Mole fraction = X1/(X1+X2) set up a numerical example.</p><p>5. Calculate the number of centimeters (cm) in a statue mile. 6. V= (FR)/(time) solve for FR.</p><p>7. How many ml are there in 1 L.</p><p>8. How many L are there in 1m3.</p><p>9. How many µg are there in 1 mg.</p><p>10. How many mg are there in 1 g.</p><p>11. How many L are there in 1 ft3.</p><p>12. How many cm are there in 1 inch.</p><p>13. How many g are there in 1 pound.</p><p>14. V= (FR)/(time) solve for time.</p><p>15. What is the definition of density?</p><p>16. What is the definition of specific gravity? 17. Calculate the time weighted average from the following exposure data. A degreaser operator is monitored for exposure to Stoddard solvent. The result of the monitoring survey are given in Table 1. Table 1</p><p>TIME PERIOD TIME CONCENTRATION CITI (NUMBER) (hr) (ppm) (ppm hr) 1 2 80 160 2 4 110 440 3 2 55 110 TOTALS 8 N/A 710</p><p>18. An air sampling pump operate at 16.5 ml per minute. How many m3 are collected after 480 minutes.</p><p>19. What is the definition of vapor pressure.</p><p>20. Convert 25C to Kelvin temperature.</p>