15.8: Chapter 9
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. km
2
9.11
1. 1,800 cm
2
9.12
1. Yes. The unit of value, cm
2
, is appropriate given the size of a sheet of paper. Because the total area of 2,412.89 cm
2
represents four sheets of paper, each sheet is approximately 600 cm
2
, which seems reasonable for a sheet of letter-size paper.
9.13
1. 153.29 m
2
9.14
1. 1,365,000 cm
2
9.15
1. 1.06 m
2
9.16
1. 34 m
2
9.17
1. 1,250 m
2
9.18
1. 70 m
2
9.19
1. 8 m
3
9.20
1. 40,000 cm
2
9.21
1. Yes. The unit of value, mm
3
, may be appropriate given the size of the paperweight. The volume of 125,000 mm
3
is equivalent to a volume of 125 cm
3
, 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 mm
3
9.23
1. 37,854,000 cm
3
9.24
1. 465 m
3
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 m
2
10. 1,200 m
2
11. 2.5 m
2
12. 2
13. 57,000
14. 21,700
16. 50,000 cm
3
17. 236 mL
18. 1,500 cm
3
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