Question

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

Answer 1

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