How much water and salt do you need to take to prepare 200 grams of 5% sodium bromide NaBr solution.

Determine the mass of sodium bromide in a given solution.
m (NaBr) = W (NaBr) • m (solution) / 100% = 5% • 200 g / 100% = 10 g.
This means that to prepare 200 g of a 5% sodium bromide solution, 10 g of salt must be dissolved in 190 ml of water.



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