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12 February, 19:46

Sample of 76 G of NaCl is dissolved to make 1 L of a solution what is the molarity of the solution

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  1. 12 February, 23:09
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    Molarity = Moles/Liter

    Use the molecular atomic mass of NaCl to convert from grams to moles.

    Molecular mass of NaCl is the sum of its atomic masses. Look at the periodic table to find these. Na is 23 g/mol and Cl is 35.5 g/mol,

    so NaCl = 23 + 35.5 = 58.5 g/mol

    multiply to cancel out grams

    76 g NaCl * (1mol / 58.5 g NaCl) = 1.3 mol NaCl

    over 1 Liter is just 1.3 M NaCl
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