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You have taken a job at a metal plating plant, and some of the metals you work with contain arsenic as an impurity. The heated metals give off arsenic vapors, which create an average concentration of arsenic of 0.00002 mg/m3 in the air in the workplace.
a. What is your increased risk of cancer if you continue to work in this job for your entire career? (Assume a 45-y career.)
b. There are about 220,000 workers in the United States in metal casting plants similar to the one in which you work. How many worker deaths above the background cancer rate would be expected due to their occupation?
c. Suppose your workplace air also contains mercury in the air with an average concentration of 0.0001 mg/mg3. Is this an acceptable risk?
You are designing a new thermometer using Galinstan, an alloy of gallium, indium, and tin that is a liquid at normal living temperatures. The coefficcient of thermal expansion is 190*10^-6 (1/kelvin)
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