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In 1L of a 3M solution of sodium chloride, how many grams of sodium chloride are in the solution?

1 Answer

MM · Stefan V.

Apr 5, 2017

$175.35 g$ $"175.35 g"$

Explanation:

A $3 M$ $"3 M"$ solution has $3$ $3$ moles of solute per litre.

The mass of one mole of $NaCl$ $"NaCl"$ equals the MW of $NaCl$ $"NaCl"$

$MW = 35.45 + 23 = 58.45 g/mol$ $"MW" = 35.45 + 23 = "58.45 g/mol"$

The mass of $3$ $3$ moles is

$58.45 g/mol \times 3 mol = 175.35 g NaCl$ $"58.45 g/mol" xx "3 mol" = "175.35 g NaCl"$

or $200 g$ $"200 g"$ rounded to one sigfig.

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