# Chapter 1 - Introduction to Chemistry - Questions and Exercises - Exercises - Page 34: 1.43

(a) 2.50, 2.55, 2.59, 2.60: not precise as they differ a lot. (b) 2.53, 2.54, 2.54, 2.55: accurate and precise because all values are very close to the true mass (c) 2.49, 2.51, 2.53, 2.63: These are not precise as the values differ a lot, but they are accurate because their average is approximately the actual mass. (d) 2.44, 2.44, 2.45, 2.47: This is not accurate as it is far from the actual value, but it is precise since the values are consistent.

#### Work Step by Step

(a) 2.50, 2.55, 2.59, 2.60: not precise as they differ a lot. (b) 2.53, 2.54, 2.54, 2.55: accurate and precise because all values are very close to the true mass (c) 2.49, 2.51, 2.53, 2.63: These are not precise as the values differ a lot, but they are accurate because their average is approximately the actual mass. (d) 2.44, 2.44, 2.45, 2.47: This is not accurate as it is far from the actual value, but it is precise since the values are consistent.

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.