Measurement, Tomory, Significant Figures

If the rules for significant figures are observed in the addition example shown, how should the total for this addition be rewritten?

35.7

432.33

5,142.312

5,610.342

• 5,610.00

• 5,610.340

• 5,610.34

• 5,610.3

Using the rules for sig. figs., the sum of 0.027 grams and 0.0023 grams should be expressed as

• 0.029 grams

• 0.0293 grams

• 0.03 grams

• 0.030

Which milligram quantity contains a total of four significant figures?

• 0.3010 mg

• 3010 mg

• 3100 mg

• 30001mg

Express to the correct number of significant figures, what is the correct sum of (3.04g +4.134g+6.1g) ?

• 13g

• 13.3g

• 13.27 g

• 13.274

What measurement contains three sig. figs.?

• 0.05g

• 0.050g

• 0.056g

• 0.0563g

Which quantity expresses the sum of the values below to the proper degree of precision (Sig Fig)?

2.1g

+33.566g

12.22g

• 47.886g

• 47.89g

• 47.9

• 48.0g

Which measurement contains three significant figures?

• 0.08 cm

• 0.080cm

• 800 cm

• 8.08 cm

In the laboratory a student determined the atomic mass of an element to be 28.02. The accepted value is 28.086. The difference between the students observed value and the accepted value, expressed to the correct significant figures, is

• 0.1

• 0.10

• 0.066

• 0.07

Which measurement contains a total of three significant figures?

• 0.01g

• 0.010g

• 0.0100g

• 0.01000g

The following wieging were made during a laboratory exercise:

Mass of evaporating dish........................59.260g

Mass of sugar sample................................1.61g

What is the total mass of the evaporating dish plus the sample, expressed to the proper number of significant figures?

• 60.870g

• 60.87g

• 60.9g

• 61g