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If the drinking water supply for a municipality has a reported concentration of lead at 14.0...

If the drinking water supply for a municipality has a reported concentration of lead at 14.0 ppb, what would the total lead exposure for an individual be if the person drank an average of 1.80 liters of water per day?
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Answer #1

volume of water = 1.80 L = 1800 mL

assuming density of water = 1.00 g/mL

mass of water = (volume of water) * (density of water)

mass of water = (1800 mL) * (1.00 g/mL)

mass of water = 1800 g

mass of lead = (concentration of lead / 109) * (mass of water)

mass of lead = (14.0 ppb / 109) * (1800 g)

mass of lead = 2.52 x 10-5 g

If an individual drank 1.80 liters of water per day, then exposure to lead will be 2.52 x 10-5 g/day

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