A solution contains 30g of glucose, 20g of salt in 500mL of water. Calculate the mass per cent of (a) glucose, (b) salt (density of water = 1g/mL).
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Mass of water = 500g ( density of water is 1g/ml)
Total mass of solution = 550g
Mass % of glucose = 30/550*100
= 5.45%
Mass % of salt = 20/550*100
= 3.63%
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