11-06-2018
Mathematics

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sqdancefan sqdancefan

15-06-2018

KCl has a molecular weight of 39+35 = 74 grams per mole, so 2 moles will have a mass of 148 grams.

Assuming the water has a density of 1000 grams per liter, the mass percentage of the KCl solution is 148/(1000+148) ≈ 0.12892 ≈ 12.9%

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