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If the concentration of mercury in the water of a polluted lake is 0.300g (micrograms) per liter of water, what is the total mass of

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If the concentration of mercury in the water of a polluted lake is 0.300g (micrograms) per liter of water, what is the total mass of mercury in the lake, in kilograms, if the lake has a surface area of 20.0 square miles and an average depth of 310 feet? kg of mercury

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