If the density of some lake water is 1.25gmL-1 and contains 92 g of Na+ ions per kg of water, calculate the molality of Na+ ions in the lake.

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Muskan Anand

2 years ago

Number of moles of Na+ ion = 93g/23gmol-1 = 4 mol Molality of Na+ ions = Number of moles of Na+ ions / Mass of water in kg = 4mol /1kg = 4 mol kg-1 = 4m Ans

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