It is desired to prepare 500g of 10% mass by mass percentage of urea in water. How much urea should be dissolved in how much volume of water? Density of water is 1g/ml.
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Answered by
3
Answer:
density of water is 1 g mL-1. a = 50g. = 450 / 1 = 450 ml. Hence the mass of urea required would be 50g and the volume of water required would be 450 ml.
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Answered by
7
Answer:
10% = wt of urea / wt of solution
10/100 = wt of urea / 500
50 g = wt of urea dissolved in water
solution - solute = solvent
therefore ,water used to make 500 g soln is
500- 50 = 450 g
450g = 450 ml ( density = 1 gm/ ml)
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