What mass of solution containing 5.00% potassium iodide, #KI#, by mass contains 258 mg #KI#?
Your goal here is to figure out the mass of your
As you know, a solution's percent concentration by mass,
In this case, you can say that a
You can thus use the solution's percent concentration as a conversion factor to figure out how many milligrams of solution would contain
#258 color(red)(cancel(color(black)("mg KI"))) * "100 mg solution"/(5.00color(red)(cancel(color(black)("mg KI")))) = color(green)(|bar(ul(color(white)(a/a)color(black)("5160 mg solution")color(white)(a/a)|)))#
The answer is rounded to three sig figs.