## To work out the volume of the solution, you can follow these steps:

1. Start with the given information: 50.00g of NaCl dissolved in water to give a solution that contains 2.500% NaCl by mass.

2. Use the formula to find the total mass of the solution:

(massNaCl / total mass) * 100 = 2.5%

Substitute the given values:

(50g / total mass) * 100 = 2.5%

3. Solve for the total mass of the solution:

(50g / total mass) = 0.025

Cross multiply:

50g = 0.025 * total mass

Divide both sides by 0.025:

total mass = 50g / 0.025

So, the total mass of the solution is 2000g.

4. Use the formula for density:

density = mass / volume

Rearrange the formula to solve for volume:

volume = mass / density

Substitute the given values:

volume = 2000g / 1.030g/mL

5. Calculate the volume of the solution:

volume = 2000g / 1.030g/mL â‰ˆ 1941.75 mL

Since the options provided are in liters (L), convert the volume from milliliters to liters:

1941.75 mL / 1000 mL/L = 1.94175 L

Therefore, the correct answer is option b) 1.942L.