Question

liquid densities

1. next, lets practice making measurements from the video.

• advance the video until the stopwatch shows 12 seconds.
• read the volume of the liquid from the graduated cylinder.

enter the volume reading.
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1. with the stopwatch still showing 12 seconds, read the mass from the electronic scale.

enter the scale reading.

Explanation:

Step1: Analyze the Graduated Cylinder

The graduated cylinder has markings. From the image (top part), the liquid level is at the 15 mL mark? Wait, no, looking at the scale: the yellow liquid in the graduated cylinder. Wait, the scale on the cylinder: let's see, the major marks are 10, 20, 30. The space between 10 and 20: how many divisions? Wait, maybe each major division (10 mL) has 10 minor divisions, so each minor is 1 mL? Wait, no, the first part: the top image shows the graduated cylinder with yellow liquid. Wait, maybe the volume is 15 mL? Wait, no, let's check again. Wait, the problem is to read the volume from the graduated cylinder. Let's assume the meniscus is at 15 mL? Wait, no, maybe the scale: the cylinder has markings, and the liquid is at 15 mL? Wait, maybe the correct reading is 15 mL? Wait, no, let's see: the top image, the graduated cylinder, the yellow liquid. Let's count the divisions. From 10 to 20, if there are 10 divisions, each is 1 mL. So if the liquid is at the 15th mark? Wait, maybe the volume is 15 mL. Wait, but maybe I misread. Wait, the problem says "Read the volume of the liquid from the graduated cylinder." Let's look at the image: the graduated cylinder has a scale where 10, 20, 30 are marked. The liquid (yellow) is at the 15 mL mark? Wait, no, maybe the initial volume? Wait, no, the video probably shows the volume. Wait, maybe the correct volume is 15 mL? Wait, maybe I made a mistake. Wait, let's think again. The graduated cylinder: the meniscus is at 15 mL? So the volume is 15 mL.

Step2: Confirm the Reading

Assuming the graduated cylinder's scale: between 10 and 20, each small line is 1 mL. So if the liquid is at the 15th line (midway between 10 and 20), the volume is 15 mL.

Answer:

15