Calculate the mass percent of a NaCl solution in which 158g of NaCl is dissolved in 3.81L of water at 25 ∘C (density = 0.997 g/mL).

Question

Calculate the mass percent of a NaCl solution in which 158g of NaCl is dissolved in 3.81L of water at 25 ∘C (density = 0.997 g/mL).

Answer 1

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Answer 2

To calculate the mass percent of a solute in a solution, we need to divide the mass of the solute by the total mass of the solution and multiply by 100.

Step 1: Calculate the total mass of the solution.
Density = mass/volume
Given density = 0.997 g/mL
Given volume = 3.81 L

Mass of the solution = density × volume
Mass of the solution = 0.997 g/mL × 3.81 L

Since 1 L = 1000 mL, we need to convert L to mL.
Mass of the solution = 0.997 g/mL × 3810 mL
Mass of the solution = 3795.87 g (rounded to 2 decimal places)

Step 2: Calculate the mass percent of NaCl.
Mass of NaCl = 158 g

Mass percent of NaCl = (mass of NaCl / mass of solution) × 100
Mass percent of NaCl = (158 g / 3795.87 g) × 100

Now we can calculate the result.

Mass percent of NaCl = (158 g / 3795.87 g) × 100
Mass percent of NaCl ≈ 4.16% (rounded to 2 decimal places)

Therefore, the mass percent of NaCl in the solution is approximately 4.16%.

Answer 3

To calculate the mass percent of a NaCl solution, you need to know the mass of NaCl and the total mass of the solution, which is the sum of the mass of NaCl and the mass of water.

First, let's calculate the mass of the solution. We can use the given density of water to convert the volume of water (3.81 L) to grams.

Density = mass/volume

Rearranging the equation, we get:

Mass = Density * Volume

Mass of water = 0.997 g/mL * 3.81 L

Now we can calculate the mass of the NaCl solution:

Mass of NaCl solution = Mass of NaCl + Mass of water

Next, we can calculate the mass percent of NaCl in the solution:

Mass percent = (Mass of NaCl / Mass of NaCl solution) * 100

Let's plug in the values:

Mass of water = 0.997 g/mL * 3.81 L = 3.79577 kg (to convert to kg)

Mass of NaCl solution = 158 g + 3.79577 kg

Mass percent = (158 g / (158 g + 3.79577 kg)) * 100

Now, let's calculate the values:

Mass of NaCl solution = 158 g + 3.79577 kg = 3.795928 kg

Mass percent = (158 g / (158 g + 3.795928 kg)) * 100

Mass percent = (158 g / 3795.928 g) * 100

Mass percent = 4.16%

Therefore, the mass percent of the NaCl solution is approximately 4.16%.

Answer 4

mass % = (mass solute/mass solution)*100 = ?

mass = volume x density
mass solution = 3810 g x 0.997 g/mL = ? grams solution

% = (158/? g solution)*100 = ?