Calculate the mass percentage of NaClNaCl in a solution containing 1.50 gg of NaClNaCl in 50.0 gg of water.

%m/m = 2.9 %

Explanation:

The mass percentage (m/m %) of a solution is calculated as follows:

m/m % = mass of solute/ mass of solution x 100

The solution is composed by : solute + solvent. In this case, the solute is NaCl and the solvent is water. We have:

mass of solute = 1.50 g

mass of solvent = 50.0 g

mass of solution = mass of solute + mass of solvent = 1.50 g = 50.0 g = 51.5 g

Thus, the mass percentage of NaCl in the solution is :

% m/m = (1.50 g)/(51.5 g) x 100 = 2.91 % ≅ 2.9 %

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