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The 90th percentile of lead concentrations in tap water samples submitted to a Virginia Tech lab...

The 90th percentile of lead concentrations in tap water samples submitted to a Virginia Tech lab by residents of Flint Michigan was 25.2 ppb.

c. If a child consumes 250 ml of this water on weekdays and 500 ml every weekend day, calculate their annual exposure to lead. (4 pts)

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