What is the mass percent of NaCl in a solution obtained by mixing 50g of this solution with 215g of H20?
What's the concn to begin with?
current% x (50/265) = ??
do you then multiply that answer by 100?
If you start with percent x (50/265) the answer is already in percent.
If you converted to a fraction first so the solution is
(%/100) x (50/265), yes, multiply that by 100.
Thank you!
To find the mass percent of NaCl in a solution, you need to know the mass of NaCl in the solution and the total mass of the solution.
Given:
Mass of NaCl = 50g
Mass of water (H2O) = 215g
First, calculate the total mass of the solution by adding the mass of NaCl and the mass of water:
Total mass of the solution = Mass of NaCl + Mass of water
Total mass of the solution = 50g + 215g
Total mass of the solution = 265g
Next, calculate the mass percent of NaCl in the solution by dividing the mass of NaCl by the total mass of the solution and multiplying by 100:
Mass percent of NaCl = (Mass of NaCl / Total mass of the solution) × 100
Mass percent of NaCl = (50g / 265g) × 100
Mass percent of NaCl ≈ 18.87%
Therefore, the mass percent of NaCl in the given solution is approximately 18.87%.