The precision of a balance is + 0.02 g. The accepted value for a measurement is 26.86 g. Which measurement is in the

accepted range?

• 26.029

26.82 g

26.87 g

26.90 g

26.87 g

Explanation:

Acceptable measurements can range between

26.86 g + 0.02 g = 26.88 g and

26.86 g - 0.02 g = 26.84 g

C. is correct. A measurement of 26.87 g is within the acceptable range of 26.84 g - 26.88 g.

A, B, and D are wrong. The measurements are all outside the acceptable range.

26.87g would be in the acceptable range, the acceptable range being 26.86g - 26.88g