# 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

**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.