An aqueous solution has 20 g of sodium chloride in 180 g of water.
What is mass % of sodium chloride in the solution?
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Mass of solute(salt) = 20g
Mass of solvent (water) = 180g
Mass of solution = 20+180= 200g
Concentration = mass of solute/mass of solution x 100
=20 x 100/ 200 = 20/100 = 20%…
20% is the answer
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