Meera has prepared 0.01% (by mass) solution of sodium chloride in water. Which of
the following correctly represents the composition of the solutions?
a) 1.00 g of NaCl + 100g of water
b) 0.11g of NaCl + 100g of water
c) 0.01g of NaCl + 99.99g of water
d) 0.10g of NaCl + 99.90g of water
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Answer:
0.01g of NaCl +99.99g of water
Explanation:
mass by mass %=mass of solute/mass of solution×100
=0.01/100=0.01%
0.01/0.01+99.99×100
=0.01/100×100
Hence,mass of solute =0.01g and mass of solvent =99.99gms
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