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15.9: Chapter 9

  • Page ID
    129938
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    Your Turn

    9.1
    1. gram (g)
    2. meter (m)
    3. liter (L)
    9.2
    1. kilogram, hectogram, decagram
    9.3
    1. 2.5 m
    9.4
    1. 245 cm
    9.5
    1. 0.76 daL
    9.6
    1. 145.7 cg
    9.7
    1. 1.25 L
    9.8
    1. Yes, 352 mg of caffeine is equal to 0.352 g, which is less than 0.5 g.
    9.9
    1. Since 3,810 m is 3.81 km, Kyrie’s skydive was at a greater altitude.
    9.10
    1. km2
    9.11
    1. 1,800 cm2
    9.12
    1. Yes. The unit of value, cm2, is appropriate given the size of a sheet of paper. Because the total area of 2,412.89 cm2 represents four sheets of paper, each sheet is approximately 600 cm2, which seems reasonable for a sheet of letter-size paper.
    9.13
    1. 153.29 m2
    9.14
    1. 1,365,000 cm2
    9.15
    1. 1.06 m2
    9.16
    1. 34 m2
    9.17
    1. 1,250 m2
    9.18
    1. 70 m2
    9.19
    1. 8 m3
    9.20
    1. 40,000 cm2
    9.21
    1. Yes. The unit of value, mm3, may be appropriate given the size of the paperweight. The volume of 125,000 mm3 is equivalent to a volume of 125 cm3, which would represent a cubic box with dimensions of /**/5\,{\text{cm}}\times 5\,{\text{cm}} \times 5\,{\text{cm}}/**/.
    9.22
    1. 8,000 mm3
    9.23
    1. 37,854,000 cm3
    9.24
    1. 465 m3
    9.25
    1. 19 L
    9.26
    1. 37,854 L
    9.27
    1. 800 mL
    9.28
    1. 100,000 boxes
    9.29
    1. 6,000 boxes
    9.30
    1. 18.75 L
    9.31
    1. 2.5 g
    9.32
    1. 1,300 kg
    9.33
    1. A reasonable value for the weight of an Etruscan shrew is 2 g. A 2 L bottle of water weighs 2 kg, and since it is one of the smallest mammals, the shrew must weigh less than that, so 2 g seems reasonable.
    9.34
    1. 0.175 kg
    9.35
    1. 4,869 g
    9.36
    1. 1,230,000 mg
    9.37
    1. 7.5 mL
    9.38
    1. 5 kg
    9.39
    1. 111,111 potatoes
    9.40
    1. 250 °C
    9.41
    1. 167 °F
    9.42
    1. Since Toronto has a temperature of 14.1 °C, Madrid has the higher temperature by 2.6 °C.
    9.43
    1. Recall that water boils at 100 °C. The more reasonable value for the temperature of the mixture is 148 °C. So, 48 °C is not sufficient to bring the mixture to a boil.
    9.44
    1. 37 °C
    9.45
    1. 60 °C
    9.46
    1. –2 °C
    9.47
    1. 63 °C
    9.48
    1. 180 minutes, or 1 hour and 30 minutes

    Check Your Understanding

    1. meter
    2. grams
    3. 12 hectoliters
    4. 15.20 m or 15.2 m
    5. 134 dam
    6. 1.27 hg
    7. 750,000,000 mm
    8. They are equal in size.
    9. 12 m2
    10. 1,200 m2
    11. 2.5 m2
    12. 2
    13. 57,000
    14. 21,700
    16. 50,000 cm3
    17. 236 mL
    18. 1,500 cm3
    19. 42.5
    20. 1,500
    21. 6,750
    22. 800
    23. 10.2
    24. 163.52
    25. 50 g
    26. 180 kg
    27. 624 g
    28. 8.9
    29. 17,000
    30. 70
    31. 0.144
    32. 196,000
    33. 0.09
    34. 28.5 °F
    35. 20 °C
    36. 71.1 °C
    37. 210
    38. 100
    39. 35
    40. 107
    41. 81
    42. 399

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