Chemistry

14 April, 04:30

The mercury content of a stream was believed to be above the minimum considered safe-1 part per billion (ppb) by weight. an analysis indicated that the concentration was 0.68 parts per billion. what quantity of mercury in grams was present in 15.0 l of the water, the density of which is 0.998 g/ml? (1 ppb hg = 1 ng hg) 1 g water

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