What is the percentage by mass of a solution containing 15 grams of solute in 85

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Question: What is the percentage by mass of a solution containing 15 grams of solute in 85 grams of solvent? (2021)

Options:

Correct Answer: 17.65%

Solution:

Percentage by mass = (mass of solute / total mass) × 100 = (15 g / (15 g + 85 g)) × 100 = 17.65%.

What is the percentage by mass of a solution containing 15 grams of solute in 85 grams of solvent? (2021)

What is the percentage by mass of a solution containing 15 grams of solute in 85 grams of solvent? (2021)

Step 1: Identify the mass of the solute. In this case, it is 15 grams.
Step 2: Identify the mass of the solvent. In this case, it is 85 grams.
Step 3: Calculate the total mass of the solution by adding the mass of the solute and the mass of the solvent. Total mass = 15 g + 85 g.
Step 4: Perform the addition: 15 g + 85 g = 100 g. So, the total mass of the solution is 100 grams.
Step 5: Use the formula for percentage by mass: Percentage by mass = (mass of solute / total mass) × 100.
Step 6: Substitute the values into the formula: Percentage by mass = (15 g / 100 g) × 100.
Step 7: Calculate the percentage: (15 / 100) × 100 = 15%.
Step 8: The final answer is 15%.

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