What mass of KClO3​ is needed to make 376 g of a 7.85% by mass solution?

What mass of KClO3 is required to create a solution that is 7.85% by mass and has a total mass of 376 g?

To create a solution that is 7.85% by mass with a total mass of 376 g, you would need approximately 29.516 grams of KClO3.

Calculating the Mass of KClO3 for a 7.85% by Mass Solution

To determine the mass of KClO3 needed to make a 7.85% by mass solution with a total mass of 376 g, we can follow these steps: Step 1: Determine the mass of the solution. The total mass of the solution is given as 376 g. Step 2: Calculate the mass of the solute (KClO3) in the solution. Since the solution is 7.85% KClO3 by mass, we can find the mass of KClO3 by multiplying the total mass of the solution by the decimal equivalent of the percentage (7.85% = 0.0785). Mass of KClO3 = 376 g × 0.0785 Mass of KClO3 = 29.516 g Step 3: Convert the mass of KClO3 to grams. To convert the calculated mass of KClO3 to grams, multiply it by 100. Mass of KClO3 = 29.516 g Therefore, to create a 7.85% by mass solution with a total mass of 376 g, you would need approximately 29.516 grams of KClO3. This amount of KClO3 will ensure that the solution is at the desired concentration.
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