Calculate the mass percent of a solution prepared by dissolving 17.2 g of NaCl in 149 g of water.

Question

Quizplus · Accepted Answer

The mass percent of a solution is calculated by dividing the mass of the solute by the total mass of the solution (solute + solvent) and then multiplying by 100. Here, the mass of NaCl is 17.2 g and the mass of water is 149 g. So, the total mass of the solution is 17.2 g + 149 g = 166.2 g. The mass percent of NaCl in the solution is (17.2 g / 166.2 g) * 100 = 10.35%, which rounds to 10.3%.

Calculate the Mass Percent of a Solution Prepared by Dissolving