Question

question 6 0.5 pts a student determines the mass of a sample of water by determining the mass of an empty container (99.20 g) and the mass of the container including the sample of water (108.23 g). use significant rules (for subtracting) to determine the mass of the water sample alone, to the correct number of significant figures. 9g 9.03g 9.0g 9.0300g 9.030g

Explanation:

Step1: Subtract masses

$108.23 - 99.20=9.03$

Step2: Check significant - figures

When subtracting, the result has the same number of decimal places as the number with the fewest decimal places in the values being subtracted. Both 108.23 and 99.20 have two decimal places, so 9.03 is correct.

Answer:

9.03g