Chemistry chapter 2

1) The metric base unit for length is the A) meter. B) inch. C) millimeter. D) kilometer. E) foot.

2) The metric unit for volume is the A) meter. B) quart. C) liter. D) pint. E) centimeter.

3) Which of the following is the basic unit of mass in the SI? A) pound B) kilogram C) milligram D) microgram E) gram

4) Which of the following is a measurement of mass in the metric system? A) milliliter B) centimeter C) kilogram D) Celsius E) meter

5) Which of the following is a measurement of temperature in the metric system? A) oz B) lb C) Celsius D) kilogram E) meter

6) A value of 25 °C is a measurement of A) distance. B) volume. C) temperature. D) mass. E) density.

7) A value of 36 mL is a measure of A) density. B) mass. C) temperature. D) volume. E) distance

8) A value of 345 cm is a measure of A) density. B) mass. C) temperature. D) volume. E) distance.

9) The amount of space occupied by a substance is its A) mass. B) density. C) weight. D) length. E) volume.

10) The measurement of the gravitational pull on an object is its A) volume. B) weight. C) mass. D) length. E) size.

11) Significant figures are important because they indicate A) the accuracy of a measurement. B) the number of digits on a calculator. C) the number of measurements. D) the precision of a measurement. E) the accuracy of the conversion factor

12) Which of the following measurements has three significant figures? A) 0.005 m B) 510 m C) 0.510 m D) 0.051 m E) 5100 m

13) Which of the following measured numbers contains the designated CORRECT number of 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

14) The number of significant figures in the measurement of 45.030 mm is A) none. B) three. C) four. D) five. E) six.

15) How many significant figures are in the measured number 0.00208 m? A) six B) two C) three D) four E) five

16) Which of the following examples illustrates a number that is correctly rounded to three significant figures? A) 4.05438 grams to 4.054 grams B) 0.03954 grams to 0.040 grams C) 103.692 grams to 103.7 grams D) 109,526 grams to 109 500 grams E) 20.0332 grams to 20.0 grams

17) A calculator answer of 423.6059 must be rounded off to three significant figures. What answer is reported? A) 423 B) 424 C) 420 D) 423.6 E) 423.7

18) Which of the answers for the following conversions contains the correct number of significant figures? A) 2.543 m × = 100.1942 in B) 2 L × = 2.12 qt C) 24.95 min × = 0.4158 hr D) 12.0 ft × × = 370 cm E) 24.0 kg × = 11 lb

19) What is the correct answer for the calculation of a volume (in mL) with measured numbers ? A) 0.22 mL B) 0.223 mL C) 57 mL D) 14 mL E) 14.3 mL

20) A researcher added three samples of sodium chloride solution; the volumes were: 0.351 mL, 0.350 mL and 0.349 mL. The total volume should be reported as A) 1.05 mL. B) 1.0 mL. C) 11 mL. D) 1.050 mL. E) 1.0500 mL.

21) 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) 2621. D) 2620. E) 2600.

22) What is the answer, with the correct number of decimal places, for this problem? 4.392 g + 102.40 g + 2.51 g = A) 109.302 g B) 109 g C) 109.3 g D) 109.30 g E) 110 g

23) The correct answer for the addition of 7.5 g + 2.26 g + 1.311 g + 2 g is A) 13.071 g. B) 13 g. C) 13.0 g. D) 10 g. E) 13.1 g.

24) What is the correct answer for the calculation ? A) 0.65645 B) 0.656 C) 0.66 D) 1.52 E) 1.5

25) 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.

26) Which of the following measurements are NOT equivalent? A) 25 mg = 0.025 g B) 183 L = 0.183 kL C) 150. ms = 0.150 s D) 84 cm = 8.4 mm E) 24 dL = 2.4 L

27) In which of the following is the metric unit paired with its correct abbreviation? A) microgram

28) Which of the following is the largest unit? A) millimeter B) micrometer C) meter D) decimeter E) kilometer

29) 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

30) Which of the following is the smallest unit? A) gram B) milligram C) kilogram D) decigram E) microgram

31) The cubic centimeter (cm3 or cc) has the same volume as a A) cubic inch. B) cubic liter. C) milliliter. D) centimeter. E) cubic decimeter.

32) 9.31 g is the same mass as A) 931 ?g. B) 931 kg. C) 93.1 cg. D) 9310 mg. E) 0.0931 dg.

33) What is the conversion factor for the relationship between millimeters and centimeters? A) 1 mm

34) A conversion factor set up correctly to convert 15 inches to centimeters is A) 100 cm

35) Which of the following conversion factors is a measured number? A) 10 cm

36) According to the United States Food and Drug Administration, the recommended daily requirement of protein is 44 g. This is ________ oz of protein. A) 1248.5 B) 320 000 C) 1.6 D) 0.0605 E) 150 000

37) Which of the following setups would convert centimeters to feet? A) cm × × B) cm × × C) cm × × D) cm × × E) cm × ×

38) The EPA limit for lead in the soil of play areas is 400 ppm. This is the same as A) 400 mg lead in each gram of soil. B) 400 g lead in each kilogram of soil. C) 400 mg lead in each kilogram of soil. D) 400 µg lead in each kilogram of soil. E) 400 µg lead in each milligram of soil.

39) How many pounds are in 3.5 kg? A) 7.7 lb B) 1.59 lb C) 0.629 lb D) 1.6 lb E) 7.70 lb

40) How many centimeters are there in 57.0 in.? A) 22 cm B) 0.0445 cm C) 145 cm D) 22.4 cm E) 140 cm

41) How many kilograms are in 30.4 lb? A) 13.8 kg B) 14 kg C) 67 kg D) 66.88 kg E) 66.9 kg

42) How many liters of soft drink are there in 5.25 qt? A) 4950 L B) 55.7 L C) 4.95 L D) 5.57 L E) 5.0 L

43) What is 6.5 m converted to inches? A) 1700 in B) 1651 in C) 39 in D) 260 in E) 255.9 in

44) 1.00 pint of milk has a volume of how many milliliters? (2 pints = 1 quart) A) 472 mL B) 530. mL C) 1000 mL D) 1890 mL E) 106 mL

45) What is the volume of a cube that measures 4.00 cm on each side? A) 16.0 mL B) 64.0 L C) 64.0 mL D) 64.00 mL E) 0.640 L

46) Grapes are $1.49 per pound. What is the cost of 1.20 kg of grapes? A) $3.93 B) $2.73 C) $1.79 D) $0.81 E) $0.56

47) A driver is traveling at 60 km/h. Is the driver speeding if the speed limit is 45 mph? A) Yes B) No

48) How many kilograms are in 30.4 lb? A) 13.8 kg B) 14 kg C) 67 kg D) 66.88 kg E) 66.9 kg

49) 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 A) 19 mg. B) 53 mg. C) 1.6 mg. D) 5.0 mg. E) 0.59 mg.

50) A doctor's order is 0.125 g of ampicillin. The liquid suspension on hand contains 250 mg/5.0 mL. How many milliliters of the suspension are required? A) 0.0025 mL B) 3.0 mL C) 2.5 mL D) 6.3 mL E) 0.0063 mL

51) 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? A) 10.4 g/mL B) 6.77 g/mL C) 1.00 g/mL D) 0.0518 g/mL E) 19.3 g/mL

52) Which one of the following substances will float in gasoline, which has a density of 0.66 g/mL? A) table salt (density = 2.16 g/mL) B) balsa wood (density = 0.16 g/mL) C) sugar (density = 1.59 g/mL) D) aluminum (density = 2.70 g/mL) E) mercury (density = 13.6 g/mL)

53) What is the mass of 2.00 L of an intravenous glucose solution with a density of 1.15 g/mL? A) 0.023 kg B) 2.30 kg C) 1.15 kg D) 0.015 kg E) 0.58 kg

54) Mercury has a specific gravity of 13.6. How many milliliters of mercury have a mass of 0.35 kg? A) 0.0257 mL B) 0.026 mL C) 25.7 mL D) 26 mL E) 4760 mL

55) What is the density of a substance with a mass of 45.00 g and a volume of 26.4 mL? A) 1.70 g/mL B) 1.7 g/mL C) 0.59 g/mL D) 0.587 g/mL E) 45.0 g/mL

56) A liquid has a volume of 34.6 mL and a mass of 46.0 g. What is the density of the liquid? A) 1.00 g/mL B) 1.33 g/mL C) 0.752 g/mL D) 1330 g/mL E) 0.663 g/mL

57) What is the mass of 53 mL of ethanol, which has a density of 0.79 g/mL? A) 67.1 g B) 41.9 g C) 42 g D) 67 g E) 53 g

58) The density of a solution is 0.847 g/mL. Its specific gravity is A) 11.8. B) 0.118. C) 0.847. D) 1.18. E) 1.2.

59) The specific gravity of a solution is 1.18. Its density is A) 11.8 g/mL. B) 0.118 g/mL. C) 0.847 g/mL. D) 1.18 g/mL. E) 1.2 g/mL.

60) 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? A) 4.3 cm3 B) 4.29 cm3 C) 0.233 cm3 D) 53 cm3 E) 53.2 cm3

61) The ratio of the mass of a substance to its volume is its A) specific gravity. B) density. C) buoyancy. D) weight. E) conversion factor.

62) Which of the following is often used to determine an individual's percentage of body fat? A) temperature B) height C) weight loss D) weight gain E) density

63) A 50.0 mL urine sample has a mass of 50.7 g. The specific gravity of the urine is A) 1.014 g/mL. B) 0.986 g/L. C) 1.01. D) 0.986. E) 50.7.

2) 8.3158

3) 25 225

4) 58.5422

5) 6.3477 × 104

6) 399870

7) 0.003 408 8

8) 0.008 090 cm

9) 680 000 km

10) 28.050 km

11) 0.0005 L

12) 75.00 m

13) 2.043 × 104 mm

14) 6.1 × 10-5 m

15) 9.00 × 106 g

1) The basic unit of mass in the metric system is the pound.

2) The liter is a unit of volume in the metric system.

3) The number 0.0500 has four significant figures.

4) The number 650 000 has two significant figures.

5) When the measured number 0.0090 is multiplied by the measured number 87.10, the answer has two significant figures.

6) When the measured number 675 is added to the measured number 87.10, the answer should be rounded to the ones place.

7) A ?g is larger than a mg.

8) There are 1000 ?g in a mg.

9) A cubic centimeter is a unit of length.

10) 1 kilogram is the same as 1000 mg.

11) 1 milliliter is the same as 1000 L.

12) The density of water is 1 kg/mL.

13) Specific gravity has no units.