Question 1

Which of the following measurements contains the correct number of significant figures?

Accepted Answer

$$14.55 (4 $$significant figures)

Question 2

A student measures the mass of a sample as $$0.00460 g. $$How many significant figures does this measurement have?

Accepted Answer

3

Question 3

Which of the following is an exact number?

Accepted Answer

The number of centimeters in a meter

Question 4

When multiplying $$2.46 cm by$$ $$0.35 cm$$, which answer is reported with the correct number of significant figures?

Accepted Answer

$$0.86 cm$^2$$

Question 5

A patient weighs $$164 lb. $$What is the body mass in kilograms? (Use $$1 kg$$ $$= 2.20 lb)$$

Accepted Answer

$$74.5 kg$$

Question 6

Which of the following is the correct conversion factor to convert from centimeters to meters?

Accepted Answer

$$1 cm$$ $$= 0.01 m$$

Question 7

If a treadmill speed is $$65$$ meters per minute, how many minutes will it take to walk $$7.5$$ kilometers?

Accepted Answer

$$115$$ minutes

Question 8

A sample of an unknown liquid has a density of $$1.32 g/mL. $$What is the volume (in mL) of a $$14.7 g $$sample of the liquid?

Accepted Answer

$$11.1 mL$$

Question 9

Which of the following statements about significant figures is TRUE?

Accepted Answer

All nonzero digits in a measured number are significant.

Question 10

Which prefix represents $$10^{-6}$$?

Accepted Answer

micro-

Question 11

A circle has a diameter of $$7.902 cm. $$How many significant figures does this measurement have?

Accepted Answer

4

Question 12

Which of the following is a measured number?

Accepted Answer

The mass of a bag of apples

Question 13

When adding $$6.019$$ and $$0.13$$, what is the answer rounded to the correct number of decimal places?

Accepted Answer

$$6.15$$

Question 14

Which of the following is the correct relationship between milliliters and cubic centimeters?

Accepted Answer

$$1 mL$$ $$= 1 cm$^3$$

Question 15

A runner completes a $$5.0 km $$race. How many meters did the runner travel?

Accepted Answer

$$5000 m$$

Question 16

Which of the following is the correct way to express $$0.000406 in $$scientific notation with the correct number of significant figures?

Accepted Answer

$$4.06 	imes 10$$^{-4}$$

Question 17

A student needs to convert $$2.44 m to $$centimeters. What is the correct answer?

Accepted Answer

$$244 cm$$

Question 18

Which of the following is a correct statement about density?

Accepted Answer

Density is the ratio of mass to volume.

Question 19

If you add $$6.102$$ and $$0.20$$, what is the answer rounded to the correct number of decimal places?

Accepted Answer

$$6.30$$

Question 20

Which of the following is the correct conversion factor for $$1$$ pound to kilograms?

Accepted Answer

$$1 lb$$ $$= 0.454 kg$$

Fundamental Measurements and Calculations in GOB Chemistry

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