Question

1. report the measurement below, in milliliters, to the correct number of significant figures.

o 66 ml
o 62.2 ml
o 65.4 ml
o 65 ml

Explanation:

Step1: Identify scale division

The graduated - cylinder has markings from 60 to 70. The space between 60 and 70 is divided into 10 equal parts. So, each division represents 1 mL.

Step2: Read the measurement

The meniscus (the curved surface of the liquid) is between 65 and 66. Estimating the value, it appears to be closer to 65 mL. When reading a graduated - cylinder, we estimate one digit beyond the smallest division. Since the smallest division is 1 mL, we report the measurement as 65 mL to the correct number of significant figures.

Answer:

65 mL