Final answer:
To determine the amount of acid in a solution, multiply the percentage of acid by the total volume of the solution. For 328 mm of a solution with 14.4% acid, the volume of acid is 47.2 mm.
Step-by-step explanation:
To find out how many millimeters of acid are in 328 millimeters of a solution with 14.4% acid, you need to calculate a percentage of the total volume. The formula to determine the volume of acid is: volume of solution × percentage of acid = volume of acid.
Step 1: Convert the percentage of acid to a decimal by dividing by 100. So, 14.4% becomes 0.144.
Step 2: Multiply this decimal by the total volume of the solution to get the volume of acid. In this case, 328 mm × 0.144 = 47.232 mm.
Step 3: Round to the nearest tenth, if necessary, to match the answer choices. So, the volume of acid is approximately 47.2 mm.
Therefore, the answer is (a) 47.2 mm.