Chemistry Matter

Question

Ted used a balance scale to weigh a 2.233 g sample of copper sulfate. Which of these measurements made by Ted is the most accurate?

2.1 g 

2.2 g 

2.4 g 

2.5 g

Answer 1

Accuracy is a measure of how close you are the true value. In this case, using only 2 significant figures, that would be the value of 2.2 g