Arun has prepared 0.01% (by mass) solution of sodium chloride in water. Which of the following correctly represents the composition of the solutions?1.00 g of NaCl + 100 g of water0.11 g of NaCl + 100 g of water0.01 g of NaCl + 99.99 g of water0.10 g of NaCl + 99.90 g of water

The correct representation of the composition of the solution is 0.01 g of NaCl + 99.99 g of water.

Here's why:

A 0.01% (by mass) solution means that there are 0.01 grams of solute (in this case, sodium chloride or NaCl) for every 100 grams of solution (solute + solvent).

Since the solvent is water, and we know that the total mass of the solution is 100 grams (solute + solvent), we can subtract the mass of the solute from the total mass to find the mass of the solvent.

So, 100 g (total mass of solution) - 0.01 g (mass of NaCl) = 99.99 g (mass of water).

Therefore, the correct representation of the composition of the solution is 0.01 g of NaCl + 99.99 g of water.