If 32.3 grams of KCl are dissolved in 192 grams of water, what is the concentration of the solution in percent by mass?
5.94% KCl
8.55% KCl
14.4% KCl
16.8% KCl
Can someone explain this to me? I don't want the answer I just want to know how to find it.
To find the concentration of a solution in percent by mass, you need to divide the mass of the solute by the mass of the solution and then multiply by 100.
In this case, the solute is KCl and its mass is given as 32.3 grams. The solution is a mixture of KCl and water, and its mass is given as 192 grams.
To calculate the percent by mass, you would perform the following steps:
Step 1: Divide the mass of the solute by the mass of the solution:
32.3 grams KCl / 192 grams solution
Step 2: Multiply the result by 100 to get the percent by mass:
(32.3 grams KCl / 192 grams solution) * 100
Calculating this expression will give you the concentration of the solution in percent by mass.
% w/w = % by mass = [(g solute)/(total grams)]*100
Total grams = grams solute + grams solvent