1. A person is considered medically to have lead poisoning if they have a concentration of...

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1. A person is considered medically to have lead poisoning ifthey have a concentration of greater than 5.2 Î¼g (micrograms) oflead per deciliter of blood. What is the concentration in parts perbillion (ppb)? Assume 1 mL of blood weighs 1 g.

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Given concentration of lead per deciliter of blood is 5.2Î¼g/deciliter

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â = 5.2Î¼g/0.1LÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â since 1 deciliter = 0.1L

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â = 52 Î¼g/L

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â = 52 ppbÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â since 1 ppb = 1Î¼g/L

Therefore the concentration of lead is 52 ppb

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