Question

Calculate the mass percent of a NaCl solution in which 193 g of NaCl is dissolved in 1.34 L of water at 25 ∘C (density = 0.997 g/mL ).

Answer 1

The mass percent of the NaCl solution is 14.45%.

Step-by-step explanation:

To calculate the mass percent of a NaCl solution, we need to divide the mass of NaCl by the mass of the solution and then multiply by 100. In this case, we have 193 g of NaCl dissolved in 1.34 L (or 1340 mL) of water. To find the mass of the solution, we need to multiply the volume of water by its density:

1.34 L * 0.997 g/mL = 1,337 g

Now we can calculate the mass percent:

Mass percent = (193 g / 1,337 g) * 100 = 14.45%