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19 February, 18:20

A sample of seawater contains 1.3 g of calcium ions in 3,100 kg of solution. what is the calcium ion concentration of this solution in units of ppm?

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  1. 19 February, 19:56
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    A unit of ppm has an acronym of parts per million. The equivalent units of ppm is therefore mg/L and mg/kg. So the ppm is:

    mass Ca + = 1.3 g = 1300 mg

    ppm = 1300 mg / 3100 kg

    ppm = 0.42 ppm
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