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    Sea Water Contains Roughly 28.0 G Of NaCl Per Litre. What Is The Molarity Of Sodium Chloride In Sea Water?

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    Helastair

    You need to find the fraction of a mole of NaCl that sea water contains. 1 mole of any substance = its atomic or molecular mass in grams.

    Atomic Mass of Cl = 35.4
    Atomic Mass of Na = 22.98
    Molecular mass of NaCl = 58.38

    The number you gave for the mass of NaCl in 1 litre of sea water is 1/2.085 of the molecular mass of NaCl - so the molar strength of sea water (given your figure) is approximately 0.5 mol.

    answered 2 years ago   

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