A chemist is using 361 milliliters of a solution of acid and water. If 18.8% of the solution is acid, how many milliliters of acid are there? Round your answer to the nearest tenth.

Answer 1

To find the amount of acid in the solution, you can use the percentage of acid in the solution:

1. Convert the percentage to a decimal: \[ 18.8% = \frac{18.8}{100} = 0.188 \]

2. Multiply the total volume of the solution by the decimal representing the percentage of acid: \[ \text{Acid volume} = 361 , \text{ml} \times 0.188 \]

3. Perform the calculation: \[ \text{Acid volume} = 361 \times 0.188 = 67.948 , \text{ml} \]

4. Round the result to the nearest tenth: \[ \text{Acid volume} \approx 67.9 , \text{ml} \]

Thus, the amount of acid in the solution is approximately 67.9 milliliters.