Question

a student fills a beaker with distilled water and marks the volume as 92.5 ml. after completing the experiment, the student records the final volume of the distilled water in the beaker as 47.61 ml. which option shows the volume of distilled water used in the experiment with the correct significant digits? 44.881 ml 44.89 ml 44.889 ml 44.9 ml

Explanation:

Step1: Calculate volume used

Volume used = Initial volume - Final volume. Initial volume is 92.5 mL and final volume is 47.61 mL. So, $92.5 - 47.61=44.89$ mL.

Step2: Apply significant - digit rules

When subtracting, the result should be rounded to the same number of decimal places as the number with the fewest decimal places in the values being subtracted. 92.5 has one decimal place. So, 44.89 mL rounds to 44.9 mL.

Answer:

44.9 mL