Question

measuring volume

1. why do some graduated cylinders have a plastic ring around it?

9.
10.

1. what is the volume of the rock?

measuring temperature

1. why do you need to be careful not to let the bulb of the thermometer touch the bottom or sides of the container?
2. what are the units of measure that will be used to measure temperature in the lab?

Explanation:

Step1: Read the initial volume

The initial volume of water in the graduated - cylinder (before adding the rock) is 110 mL.

Step2: Read the final volume

The final volume of water in the graduated - cylinder (after adding the rock) is 130 mL.

Step3: Calculate the volume of the rock

The volume of the rock is equal to the difference between the final and initial volumes of water. So, $V = 130 - 110$.
$V=20$ mL

Answer:

20 mL