Question

1. using the graduated cylinder to the right, select the most accurate and precise measurement.

22 ml
20 ml
22.0 ml
20.0 ml

Explanation:

Step1: Analyze the graduated cylinder scale

The graduated cylinder has markings where between 10 mL and 20 mL, and 20 mL and 30 mL, the intervals are divided into smaller divisions. From the meniscus (the curved surface of the liquid), we can see that the liquid level is at 22.0 mL when considering the precision of the scale (the decimal place indicates precision, and the value should match the actual reading). The reading should be precise to one decimal place as the scale likely has divisions that allow for that, and the accurate reading from the meniscus is around 22.0 mL (not 20 mL as that's too low, and 22 mL or 20.0 mL don't match the visual reading as well as 22.0 mL).

Step2: Evaluate the options

• 22 mL: Less precise (no decimal, doesn't show the precision of the scale).
• 20 mL: Inaccurate, as the meniscus is above 20 mL.
• 22.0 mL: Accurate (matches the visual reading) and precise (shows the decimal place indicating the precision of the measurement from the graduated cylinder).
• 20.0 mL: Inaccurate, as the meniscus is not at 20.0 mL.

Answer:

22.0 mL