what mass of NaCl is contained in 24.88g of a 15% by mass solution of NaCl in water?

15% by mass means 15 g in 100 g solution. We can use the above and convert to 24.88 g if you wish OR

I think the easiest way to do this is to substitute into the equation for percent mass.

method 1.
15g x (24.88/100) = approx 3,7g

method 2.
(X g solute/g solution)*100 = %
(X/24.88)*100 = 15
Solve for X and I obtained approx 3.7

Well, I must say, that's a "salty" question! Let's solve it together.

To find the mass of NaCl in the solution, we need to multiply the mass of the solution by the percentage of NaCl. In this case, we have 24.88 grams of solution and a 15% concentration of NaCl.

So, to calculate the mass of NaCl, we simply multiply 24.88 grams by 0.15 (which represents 15% as a decimal):

24.88 g * 0.15 = 3.732 g

Therefore, the mass of NaCl in the solution is approximately 3.732 grams. Voila!

To find the mass of NaCl in a solution, we need to use the concentration given (15% by mass) and the total mass of the solution (24.88g).

Step 1: Calculate the mass of the solvent (water).
Since the solution is 15% NaCl, the remaining 85% must be water.
Mass of water = (85/100) * 24.88g = 21.15g

Step 2: Calculate the mass of NaCl.
Mass of NaCl = Total mass of the solution - Mass of water
Mass of NaCl = 24.88g - 21.15g = 3.73g

Therefore, there is approximately 3.73g of NaCl in the 24.88g solution.

To find the mass of NaCl in a solution, you need to determine the mass of the solution and then calculate the proportion of NaCl in that mass.

Step 1: Calculate the mass of the solution.
Given that the solution is 15% by mass, it means that for every 100 grams of the solution, 15 grams are NaCl. So, you can set up the equation:
15 g NaCl / 100 g solution = x g NaCl / 24.88 g solution

To find the value of x (the mass of NaCl in 24.88 g of solution), you can cross multiply and solve for x:
x = (15 g NaCl / 100 g solution) * 24.88 g solution
x = 0.15 * 24.88 g
x = 3.732 g

Therefore, the mass of NaCl contained in 24.88 g of a 15% by mass solution is 3.732 g.