What mass of solution containing 5.00% potassium iodide, #KI#, by mass contains 258 mg #KI#?

Answer 1

#"5160 mg"#

Your goal here is to figure out the mass of your #"5.00% m/m"# potassium iodide solution that contains #"258 mg"# of potassium iodide, which is your solute.
As you know, a solution's percent concentration by mass, #"% m/m"#, is calculated by taking the number of parts of solute you get per #100# parts of solution.
In this case, you can say that a #"5.00% m/m"# potassium iodide solution contains #"5.00 mg"# of potassium iodide for every #"100 mg"# of solution.
You can thus use the solution's percent concentration as a conversion factor to figure out how many milligrams of solution would contain #"258 mg"# of solute
#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.

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Answer 2

To find the mass of the solution containing 5.00% potassium iodide (KI) by mass that contains 258 mg KI, we can set up a proportion:

(258 mg KI) / (mass of solution) = (5.00 g KI) / 100 g

Solving for the mass of the solution:

mass of solution = (258 mg KI) * (100 g) / (5.00 g KI)

mass of solution ≈ 5160 mg

Therefore, the mass of the solution containing 258 mg of KI is approximately 5160 mg.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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