A solution is prepared by dissolving 23.7 g of CaCl2 in 375 g of water. The density of the resulting solution?
is 1.05 g/ml. the concentration of CaCl2 is ________% by mass.
answer: 5.94
can someone tell me the steps?
You don't need the density, only the definition of mass percent.
mass percent = (mass solute/mass soln)*100 = ??
You have 23.7 g solute in (375+23.7 = 398.7) grams solution.
(23.7/398.7)*100 = 5.94% by mass.
Of course, I can help you with that! Let's calculate the concentration of CaCl2 in the solution step by step.
Step 1: Calculate the total mass of the solution
To find the total mass of the solution, you need to add the mass of CaCl2 and the mass of water:
Total mass = Mass of CaCl2 + Mass of water
Total mass = 23.7 g + 375 g
Total mass = 398.7 g
Step 2: Calculate the mass percent of CaCl2
Now we will calculate the mass percent of CaCl2 in the solution. The mass percent is calculated by dividing the mass of CaCl2 by the total mass of the solution and then multiplying by 100:
Mass percent of CaCl2 = (Mass of CaCl2/Total mass) x 100
Mass percent of CaCl2 = (23.7 g / 398.7 g) x 100
Mass percent of CaCl2 ≈ 5.94%
So, the concentration of CaCl2 in the solution is approximately 5.94% by mass. I hope this helps, and if you have any more questions, feel free to ask!
Sure! I can help you with that. To find the concentration of CaCl2 in the solution as a percentage by mass, you can follow these steps:
Step 1: Find the total mass of the solution.
- Mass of CaCl2 = 23.7 g
- Mass of water = 375 g
- Total mass of solution = mass of CaCl2 + mass of water
Step 2: Calculate the percentage by mass of CaCl2 in the solution.
- Percentage by mass = (mass of CaCl2 / total mass of solution) x 100
Let's calculate it together:
Step 1:
- Total mass of solution = 23.7 g + 375 g
- Total mass of solution = 398.7 g
Step 2:
- Percentage by mass = (23.7 g / 398.7 g) x 100
- Percentage by mass ≈ 5.94
Therefore, the concentration of CaCl2 in the solution is approximately 5.94% by mass.
To find the concentration of CaCl2 in the solution as a percentage by mass, you need to follow these steps:
Step 1: Calculate the total mass of the solution.
Add the mass of the solute (CaCl2) and the mass of the solvent (water) together.
Mass of CaCl2 + Mass of water = 23.7 g + 375 g = 398.7 g
Step 2: Calculate the mass of CaCl2 in the solution.
Mass percentage = (Mass of solute / Mass of solution) x 100
Mass of CaCl2 = 23.7 g
Step 3: Calculate the concentration as a mass percentage.
Concentration percentage = (Mass of CaCl2 / Mass of solution) x 100
Concentration percentage = (23.7 g / 398.7 g) x 100
Concentration percentage ≈ 5.94%
Therefore, the concentration of CaCl2 in the solution is approximately 5.94% by mass.