A solution is prepared by 15 g of sodium chloride in 200 g of water. What is the mass by mass percentage of sodium chloride in this solution?
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Answer:
7%
Explanation:
Mass of solute (NaCl) = 15g
Mass of solvent (H2O) = 200g
Mass of solution = 200+ 15
= 215g
Mass percentage of NaCl= Mass of Nacl÷Mass of solution× 100
=15÷215×100
=6.97
=7% approx
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