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If the density of water of a lake is 1.25 $gmL^{−1}$ and one kg of lake water contains 92 g of $Na^+ $ ions, calculate the molarity of $Na^+$ ions in this lake water. (Gram atomic mass of Na= 23 $g mol^{-1}$)

1 Answer

4.579M
Hence (A) is the correct answer.
answered Jun 6, 2014 by sreemathi.v
 
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