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Question: hexavalent chromium chromiumvi is used for the production of stainless...

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Hexavalent chromium, chromium(VI), is used for the production of stainless steel, textile dyes, wood preservation, leather tanning, and in anti-corrosion coatings. Concentrations of hexavalent chromium are measured using the analytical technique of ion chromatography. (1 pt) Inhaling hexavalent chromium causes lung cancer. The Occupational Safety and Health Administration Permissible Exposure Limit (OSHA PEL) for airborne exposure to chromium(VI) is 0.005 mg/m2. Assuming a tidal volume (volume of air displaced in the lungs between normal inspiration and expiration) of 500 mL and a respiration rate of 14 breaths per minute, how many micrograms of chromium(VI) would a person be exposed to in a typical 8 hour work day if the air contained chromium(VI) at the OSHA PEL? 3. 4. (1 pt) In a 2010 study of drinking water in 35 American cities, the Environmental Working Group found that a sample of tap water from Madison had a chromium(VI) concentration of 1.58 ppb. (Study: Madison tap water has relatively high levels of chromium-6, Wisconsin State Journal, December 20, (a.) What is this concentration in nM? In your calculation, assume the temperature is 22°C and the density of water is 0.9978 g/mL to be exposed to the same amount of chromium(VI) calculated in question 3? Assume the temperature is 22°C and the density of water is 0.9978 g/mL (b.) How many liters of water with a chromium(VI) concentration of 1.58 ppb would a person have to drink
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