CHEM 117 Significant Figures Quiz

Correctly rounded, the sum of 3.2 x 10^-3 cm and 2.7 x 10^-4 cm is - 0.00347 cm - 0.003 cm - 0.0034 cm - 0.0029 cm - 0.0035 cm

0.0035 cm

Report the following number to five significant figures: 107.0863 (Do not use scientific notation.)

107.09

Correctly rounded, the result (23.1000 g - 22.0000 g) / (25.10 mL - 25.00 mL) is - 11 g/mL - 11.000 g/mL - 11.0 g/mL - 11.00 g/mL

11 g/mL

Rounded correctly, 2.000 cm x 10.0 cm= - 20 cm^2 - 20.00 cm^2 - 20.0 cm^2 - 2.000 cm^2

20.0 cm^2

Correctly rounded, 23.0032 + 0.491 g= - 23.4942 g - 23.494 g - 23.49 g - 23.4 g - 23 g

23.494 g

27.5234 mL of water is transferred to a graduated cylinder with scale marks 0.01 mL apart. Which of the following will be the correct reading taken from the graduated cylinder? - 27.52 mL - 27.523 mL - 27.5 mL - 27.5234 mL - 27 mL

27.523 mL

How many significant figures are in the number 10.55? Give a numerical answer.

4

The number of significant figures in 0.00230300 is - 8 - 4 - 6 - 3 - 9

6

How many significant figures are in the number 210,000? - Exactly 6 - Exactly 2 - At least 2 - At least 6

At least 2

A ton is equivalent to 907.185 kg. How many significant figures does this number have? - 6 - 3 - 5 - This number is exact

This number is exact