Calaculate the morlity of pure water
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The molar mass of water is roughly 18 g/mol.
The density of water is roughly 1 g/mL.
Since there are 1000 mL in a liter, there are 1000 grams in a liter of water.
No. of mol=(mass)/(molar mass)=(1000 g)/(18 g/mol) = 55.56 mol water
we get: M=(55.56 mol)/1 L = 55.56 M
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