Question

Arun 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) 0.01 g of NaCl + 99.99g of water
(d) 0.10 g of NaCl + 99.90g of water
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Answer 1

Answer:

c)0.01g of NaCl+99.99g of water

Mass%= mass of solute/mass of solute+mass of solute*100

= 0.01/0.01 + 99.99*100

=0.01/100*100

=0.01g

Explanation:

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