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eb 18 eb 18 D 6. OL 10! James owns a private well that has a concentration of arsenic of 0.2 mg/L in the water. James drinks
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Answer #1

The concentration of arsenic in the well is 0.2mg/L

James drink 1 L of water every day from that well for 40 years

That means James drinking 0.2mg(200 mcg) of arsenic daily.

James weight is 80kg

So, 200mcg + 80kg = 2.5mcg/kg /day

That means James arsenic intake is 2.5 mcg/kg/day

2.5 mcg = 0.0025mg

Answer - 0.0025mg/kg-day

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