How many grams of KBR, could be recovered by evaporating 650 g of a 15.0% KBr solution of dryness?
See your post above.
To find the number of grams of KBr that could be recovered by evaporating a 15.0% KBr solution, we need to understand how to calculate the mass of solute in a solution.
Step 1: Calculate the mass of the solution:
Given that the solution has a mass of 650 grams, this is the combined mass of both the solvent (water) and the solute (KBr).
Step 2: Calculate the mass of the solvent:
Since the solution is 15.0% KBr, the remaining 85.0% must be the solvent (water).
Mass of solvent = 85.0% of 650 g
= (85.0/100) * 650 g
= 0.85 * 650 g
= 552.5 g
Step 3: Calculate the mass of the solute:
Since the solute is KBr and it constitutes 15.0% of the solution, we can find the mass of the solute.
Mass of solute = 15.0% of 650 g
= (15.0/100) * 650 g
= 0.15 * 650 g
= 97.5 g
Therefore, the number of grams of KBr that could be recovered by evaporating a 650 g 15.0% KBr solution is 97.5 grams.