1. 5.21 cm is the same distance as A. 0.0521 m B. 52.1 dm C. 5.21 mm D. 0.00521

Question

1. 5.21 cm is the same distance as

A. 0.0521 m

B. 52.1 dm

C. 5.21 mm

D. 0.00521 km

E. 5210 m

2.The measurement 0.000 0043 m, expressed correctly using scientific notation, is

A. 0.43 x 10-7 m

B. 4.3 x 10-6 m

C. 4.3 x 106 m

D. 4.30 x 10-6 m

E. 43 x 105 m

3.Which of the following numbers has the correct assigned significant figures?

A. 0.04300     5 significant figures

B. 0.00302     2 significant figures

C. 156,000     3 significant figures

D. 1.04           2 significant figures

E. 3.0650        4 significant figures

4.What is the correct answer for the arithmetic below? (numbers represent measurements)                                        ?

A. 0.22

B. 0.223

C. 0.2227

D. 2.2

E. 0.2227244389

5.When 2610 + 11.7 + 0.22 are added, the answer to the correct number of decimal places is

A. 2621.92

B. 2621.9

C. 2622

D. 2621.0

E. 2600

6.What is the metric relationship between grams and micrograms?

A. 1 g = 100 g

B. 1 g = 1,000,000 g

C. 1 g = 0.000 001 g

D. 1 g = 1000 g

E. 1 g = 0.001 g

7.The mass of 9.31 g is the same mass as

931 g

931 kg

93.1 cg

9310 mg

0.0931 dg

8.Which of the following is the smallest unit?

A. gram

milligram

kilogram

decigram

microgram

9.Carrots are $1.29 per pound. What is the cost of 1.20 kg of carrots? (hint: 1kg=2.205 lb)

$3.41

$0.70

$1.55

$1.29

$2.37

10.A nugget of gold with a mass of 521 g is added to 50.0 mL of water. The water level rises to a volume of 77.0 mL. What is the density of the gold?

10.4 g/mL

6.77 g/mL

1.00 g/mL

0.0518 g/mL

19.3 g/mL

11.A dose of aspirin of 5.0 mg per kilogram of body weight has been prescribed to reduce the fever of an infant weighing 8.5 pounds. The number of milligrams of aspirin that should be administered is

19 mg

93 mg

1.6 mg

5.0 mg

0.59 mg

12.Diamond has a density of 3.52 g/mL. What is the volume in cubic centimeters of a diamond with a mass of 15.1 g?

4.3 cm3

4.29 cm3

0.233 cm3

53 cm3

53.2 cm3

13.Complete the following conversion.
4.50 x 1013 nm = ____________ km

A. 4.50 x 101 km

B. 4.50 x 107 km

C. 4.50 x 1019 km

D. 4.50 x 1025 km

E. 4.50 x 10-1km

14. Perform the following conversion. 0.0255 L = ___________ L

A. 2.55 x 10-2L

B. 2.55 x 10-6L

C. 2.55 x 10-8L

D. 2.55 x 104L

E. 2.55 x 106L

15. Potassium is needed to maintain the correct balance of electrolytes in the human body. If there are 450 mg of potassium in an 8 oz glass of orange juice, how many grams of potassium are in a container of orange juice containing 1.68 L? (32 oz = 1 quart, 0.946 L = 1 quart)

A. 0.0999 g

B. 25.6 g

C. 3.20 g

D. 1.90 g

E. 3200 g

Explanation / Answer

Answer:

1.A)0.0521m

2.B)4.3 x 10-6m

3.C)156,000   3 significant figures

4) question not clear

5)2621.92

6)B)1g = 1,000,000 micrograms

8.E)microgram

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