What is the twa exposure, A worker is exposed to 60 ppm of

What is the twa exposure

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A worker is exposed to 60 ppm of acetone for 3 hours and to 5 ppm for the remainder of the 8-hour shift. What is the TWA exposure

A. 20.55

B. 25.63

C. 22.22

D.19.54

Reference no: EM131008375

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