Final answer:
The mass percentage of NaCl in the solution is 2.91%, calculated by dividing the mass of NaCl by the total mass of the solution and multiplying by 100.
Step-by-step explanation:
To calculate the mass percentage of NaCl in a solution containing 1.50 g of NaCl dissolved in 50.0 g of water, you need to consider the total mass of the solution. The total mass is the sum of the mass of NaCl and the mass of water, which is 1.50 g + 50.0 g = 51.50 g. The mass percentage is then calculated by dividing the mass of NaCl by the total mass of the solution and then multiplying by 100 to express it as a percent.
Calculations:
Mass percentage of NaCl = (Mass of NaCl / Total mass of solution) × 100
Mass percentage of NaCl = (1.50 g / 51.50 g) × 100 = 2.91%