화학실험 보고서 - 아스피린 분석 실험보고서(예비, 결과 리포트) 레포트 OQ

화학실험 보고서 - 아스피린 분석 실험보고서(예비, 결과 리포트) 레포트
 

CHAPTER TWO
2.1 (a)
〓 18144 × 10 9 ms . 1 wk 1 d 1 h 1 s 38.1 ft / s 0.0006214 mi 3600 s (b) 〓 25.98 mi / h ⇒ 26.0 mi / h 3.2808 ft 1 h 3 wk 7d 24 h 3600 s 1000 ms

(c)

554 m 4 1d 1h d ? kg 24 h 60 min

1 kg 108 cm 4 〓 3.85 × 10 4 cm 4 / min? g 1000 g 1 m 4

2.2 (a) (b) (c)

1 m 1 h 760 mi 〓 340 m / s h 0.0006214 mi 3600 s 921 kg 2.20462 lb m m3 1 kg 1 m3 〓 57.5 lb m / ft 3 35.3145 ft 3 1.34 × 10 -3 hp 〓 119.93 hp ⇒ 120 hp 1 J/s

5.37 × 10 3 kJ 1 min 1000 J min 60 s 1 kJ

2.3 Assume that a golf ball occupies the space equivalent to a 2 in × 2 in × 2 in cube. For a classroom with dimensions 40 ft × 40 ft × 15 ft : 40 × 40 × 15 ft 3 (12) 3 in 3 1 ball n balls 〓 . 〓 518 × 10 6 ? 5 million balls ft 3 2 3 in 3 The estimate could vary by an order of magnitude or more, depending on the assumptions made. 2.4 4.3 light yr 365 d 24 h
1 yr 1d 3600 s 1.86 × 10 5 mi 1 h 1 s 3.2808 ft 0.0006214 mi 1 step 〓 7 × 1xxx steps 2 ft

2.5 Distance from the earth to the moon 〓 238857 miles
238857 mi 1 m 1 report 0.001 m 0.0006214 mi 〓 4 × 1xxx reports

2.6

19 km 1000 m 0.0006214 mi 1000 L 〓 44.7 mi / gal 1 L 1 km 1 m 264.17 gal Calculate the total cost to travel x miles. Total Cost
American

〓 $14,500 +

$1.25 1 gal gal 28 mi

x (mi)

〓 14,500 + 0.04464 x

Total Cost

European

〓 $21,700 +

$1.25 1 gal x (mi) 〓 21,700 + 0.02796 x gal 44.7 mi

Equate the two costs ⇒ x 〓 4.3 × 10 5 miles

2-1

2.7
5320 imp. gal plane ? h 〓 1.188 × 105 14 h 365 d 1 d 1 yr 106 cm3 220.83 imp. gal 0.965 g 1 cm
3

1 kg 1000 g

1 tonne 1000 kg

tonne kerosene plane ? yr

4.02 × 109 tonne crude oil 1 tonne kerosene yr
5

plane ? yr

7 tonne crude oil 1.188 × 10 tonne kerosene

〓 4834 planes ⇒ 5000 planes

2.8 (a) (b) (c)

25.0 lb m 25 N

32.1714 ft / s 2 1

1

lb f

32.1714 lb m ? ft / s 2 1 kg ? m/s 2 1N 9.8066 m/s 2

〓 25.0 lb f

〓 2.5493 kg ⇒ 2.5 kg

10 ton

1 lb m 5 × 10
-4

10…(생략)
 

   
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