calculate the mass/volume percent of a NaCl solution in which 127g of NaCl is dissolved in enough water to give a total volume of 2.69L.
Didn't I do one like this for you last evening? What do you not understand about this. If you know the definitions you should be able to do this.
mass % = [(g solute/g solution)]*100
Also, is that mass% and volume% as in two separate problems?
4.72
To calculate the mass/volume percent of a NaCl solution, you need to determine the mass of NaCl and the volume of the solution.
In this case, you have 127g of NaCl dissolved in a total volume of 2.69L.
To find the mass/volume percent, you divide the mass of NaCl by the volume of the solution and multiply by 100.
Mass/volume percent = (Mass of NaCl / Volume of Solution) x 100
Plugging in the values, we have:
Mass/volume percent = (127g / 2.69L) x 100
To perform the calculation, divide 127 by 2.69, then multiply the result by 100:
Mass/volume percent = (47.2) x 100
Mass/volume percent = 4.72%
Therefore, the mass/volume percent of the NaCl solution is 4.72%.