What is the mass percent of a solution containing 20 g of solute in 180 g of sol
Practice Questions
Q1
What is the mass percent of a solution containing 20 g of solute in 180 g of solution?
10%
20%
25%
15%
Questions & Step-by-Step Solutions
What is the mass percent of a solution containing 20 g of solute in 180 g of solution?
Correct Answer: 10%
Step 1: Identify the mass of the solute. In this case, the mass of the solute is 20 g.
Step 2: Identify the mass of the solution. The mass of the solution is the mass of the solute plus the mass of the solvent. Here, the mass of the solution is 180 g.
Step 3: Calculate the total mass of the solution. Add the mass of the solute (20 g) to the mass of the solution (180 g). So, 20 g + 180 g = 200 g.
Step 4: Use the mass percent formula: Mass percent = (mass of solute / mass of solution) x 100.
Step 5: Substitute the values into the formula: Mass percent = (20 g / 200 g) x 100.
Step 6: Calculate the result: (20 g / 200 g) = 0.1, then multiply by 100 to get 10%.
Step 7: Conclude that the mass percent of the solution is 10%.
