the mass/volume percent of a NaCl solution in which 136 g of NaCl is dissolved in enough water to give a total volume of 4.90 L .

% w/v = (grams solute/mL solution)*100 =

27.75

To find the mass/volume percent of the NaCl solution, you need to determine the mass of NaCl and the volume of the solution.

Step 1: Calculate the mass/volume percent of the NaCl solution.

Mass/volume percent = (mass of solute / volume of solution) x 100

Step 2: Determine the mass of NaCl.

The mass of NaCl given is 136 g.

Step 3: Determine the volume of the solution.

The total volume of the solution is given as 4.90 L.

Step 4: Calculate the mass/volume percent.

Mass/volume percent = (136 g / 4.90 L) x 100
= 27.76%

Therefore, the mass/volume percent of the NaCl solution is 27.76%.

To calculate the mass/volume percent of a solution, you need to divide the mass of the solute (NaCl) by the volume of the solution and then multiply by 100%.

In this case, the mass of NaCl is given as 136 g, and the total volume of the NaCl solution is 4.90 L.

Step 1: Find the mass/volume percent of NaCl by dividing the mass of NaCl by the volume of the solution:
mass/volume percent = (mass of NaCl / volume of solution) * 100%

mass/volume percent = (136 g / 4.90 L) * 100%

Step 2: Calculate the mass/volume percent:
mass/volume percent = 27.76%

Therefore, the mass/volume percent of the NaCl solution is 27.76%.