A solution
contain 20 gram of NaCl in 95 cm3 solution the density of the solution is 1.25 g cm-3 what is the mass percentage of Nacl
mass of the solution is 1.25 g/cc x 95 cc = ?
% NaCl = (grams NaCl/mass solution)*100 = ?
To find the mass percentage of NaCl in the solution, we need to know the mass of NaCl and the mass of the entire solution.
First, let's find the mass of NaCl:
Given that the solution contains 20 grams of NaCl.
Next, let's find the mass of the entire solution:
To do this, we need to know the volume of the solution and its density. The density of the solution is given as 1.25 g/cm³.
To calculate the volume, we can use the formula:
Volume = Mass / Density
Since we know the density and want to find the volume, we rearrange the formula:
Volume = Mass / Density = 95 cm³ / (1.25 g/cm³) = 76 g
Now we can find the mass of the entire solution:
Mass of solution = Volume × Density = 76 g × 1.25 g/cm³ = 95 g
Finally, we can calculate the mass percentage of NaCl in the solution:
Mass percentage = (Mass of NaCl / Mass of solution) × 100
Mass percentage = (20 g / 95 g) × 100 ≈ 21.05%
Therefore, the mass percentage of NaCl in the solution is approximately 21.05%.