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If the density of some lake water is `1.25 g mL^(-1)` and contains `92g` of `Na^(o+)` ions per `kg` of water, calculate the molality of `Na^(o+)` ions

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If the density of some lake water is 1.25gmL-1 and contains 92g of Na⊕ ions per kg of water, calculate the molality of Na⊕ ions in the lake. Select the correct answer from above options

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Correct Answer - m=4 W2=92g,Mw2=23g W1=1kg=1000g m= 92×1000 23×10000 =4

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