What is the percent by mass concentration of KCl in a solution prepared by adding 80.0 g KCl to 200.0 g of water?
Well, if we're talking about the mass of KCl in the solution, that would be a salty calculation! So let's dive in and see what we get!
To find the percent by mass concentration, we need to divide the mass of KCl by the total mass of the solution, and then multiply by 100 to get a percentage.
The mass of KCl is 80.0 g, and the mass of water is 200.0 g. Adding them together, we get a total mass of 280.0 g.
Now, let's calculate the percent by mass concentration:
(80.0 g / 280.0 g) * 100 = 28.6%
So, the percent by mass concentration of KCl in the solution is 28.6%. This means that approximately 28.6% of the total mass of the solution is made up of KCl. It's a salty solution, but not too overwhelming!
To find the percent by mass concentration of KCl in the solution, you need to find the mass of KCl in the solution and then calculate the percentage using the formula:
Percent by mass concentration = (mass of KCl / total mass of solution) * 100
Step 1: Calculate the mass of KCl in the solution.
Given: mass of KCl = 80.0 g
Step 2: Calculate the total mass of the solution.
Given: mass of water = 200.0 g
Total mass of solution = mass of KCl + mass of water
Total mass of solution = 80.0 g + 200.0 g
Total mass of solution = 280.0 g
Step 3: Calculate the percent by mass concentration.
Percent by mass concentration = (mass of KCl / total mass of solution) * 100
Percent by mass concentration = (80.0 g / 280.0 g) * 100
Percent by mass concentration = 0.2857 * 100
Percent by mass concentration = 28.57%
Therefore, the percent by mass concentration of KCl in the solution is 28.57%.
To calculate the percent by mass concentration of KCl in a solution, you need to divide the mass of KCl by the mass of the entire solution (which is the sum of the mass of KCl and the mass of water), and then multiply by 100 to convert it to a percentage.
Step 1: Calculate the mass of the entire solution.
Mass of KCl = 80.0 g
Mass of water = 200.0 g
Mass of entire solution = Mass of KCl + Mass of water
Step 2: Calculate the percent by mass concentration.
Percent by mass concentration = (Mass of KCl / Mass of entire solution) x 100
Let's plug in the numbers:
Percent by mass concentration = (80.0 g / (80.0 g + 200.0 g)) x 100
Now, let's simplify:
Percent by mass concentration = (80.0 g / 280.0 g) x 100
Finally, let's calculate:
Percent by mass concentration = 0.2857 x 100
The percent by mass concentration of KCl in the solution is approximately 28.57%.