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.