Tải bản đầy đủ - 0 (trang)
Appendix I. Numerical Values of Constants and Coeffi cients

Appendix I. Numerical Values of Constants and Coeffi cients

Tải bản đầy đủ - 0trang

546

Symbol



Appendix I



Description



Magnitude

2.42 Â 10À5 m2 sÀ1 at 20 C

2.57 Â 10À5 m2 sÀ1 at 30 C

2.72 Â 10À5 m2 sÀ1 at 40 C

2.88 Â 10À5 m2 sÀ1 at 50 C

3.04 Â 10À5 m2 sÀ1 at 60 C



e



Base of natural logarithm



2.71828 (1/e = 0.368)



Electronic charge



1.602 Â 10À19 coulomb



F



Faraday’s constant



9.649 Â 104 coulomb molÀ1

9.649 Â 104 J molÀ1 VÀ1

2.306 Â 104 cal molÀ1 VÀ1

23.06 kcal molÀ1 VÀ1



g



Gravitational acceleration



9.780 m sÀ2 (sea level,a 0 latitude)

9.807 m sÀ2 (sea level,a 45 latitude)

9.832 m sÀ2 (sea level,a 90 latitude)

978.0 cm sÀ2 (sea level,a 0 latitude)

980.7 cm sÀ2 (sea level,a 45 latitude)

983.2 cm sÀ2 (sea level,a 90 latitude)



h



Planck’s constant



6.626 Â 10À34 J s

6.626 Â 10À27 erg s

0.4136 Â 10À14 eV s

1.584 Â 10À37 kcal s

1.986 Â 10À25 J m

1240 eV nm



hc

Hsub



Heat of sublimation of water



51.37 kJ molÀ1 (2.847 MJ kgÀ1) at À10 C

51.17 kJ molÀ1 (2.835 MJ kgÀ1) at À5 C

51.00 kJ molÀ1 (2.826 MJ kgÀ1) at 0 C

12.27 kcal molÀ1 (680 cal gÀ1) at À10 C

12.22 kcal molÀ1 (677 cal gÀ1) at À5 C

12.18 kcal molÀ1 (675 cal gÀ1) at 0 C



Hvap



Heat of vaporization of water



45.06 kJ molÀ1 (2.501 MJ kgÀ1) at 0 C

44.63 kJ molÀ1 (2.477 MJ kgÀ1) at 10 C

44.21 kJ molÀ1 (2.454 MJ kgÀ1) at 20 C

44.00 kJ molÀ1 (2.442 MJ kgÀ1) at 25 C

43.78 kJ molÀ1 (2.430 MJ kgÀ1) at 30 C

43.35 kJ molÀ1 (2.406 MJ kgÀ1) at 40 C

42.91 kJ molÀ1 (2.382 MJ kgÀ1) at 50 C

42.47 kJ molÀ1 (2.357 MJ kgÀ1) at 60 C

40.68 kJ molÀ1 (2.258 MJ kgÀ1) at 100 C



k



Boltzmann’s constant



1.381 Â 10À23 J moleculeÀ1 KÀ1

1.381 Â 10À16 erg moleculeÀ1 KÀ1

8.617 Â 10À5 eV moleculeÀ1 KÀ1

0.02354 eV moleculeÀ1 at 0 C

0.02526 eV moleculeÀ1 at 20 C

0.02569 eV moleculeÀ1 at 25 C

0.02699 eV moleculeÀ1 at 40 C



kT



Kair



Thermal conductivity coefficient

of dry air (1 atm, 0.1013 MPa)b



0.0237 W mÀ1  CÀ1 at À10 C

0.0243 W mÀ1  CÀ1 at 0 C

0.0250 W mÀ1  CÀ1 at 10 C

0.0257 W mÀ1  CÀ1 at 20 C

0.0264 W mÀ1  CÀ1 at 30 C



547



Numerical Values of Constants and Coefficients



Symbol



Description



Magnitude

0.0270 W mÀ1  CÀ1 at 40 C

0.0277 W mÀ1  CÀ1 at 50 C

0.0284 W mÀ1  CÀ1 at 60 C



Kwater



Thermal conductivity coefficient of moist

air (100% relative humidity, 1 atm)



0.0242 W mÀ1  CÀ1 at 0 C

0.0255 W mÀ1  CÀ1 at 20 C

0.0264 W mÀ1  CÀ1 at 40 C

0.0269 W mÀ1  CÀ1 at 60 C



Thermal conductivity coefficient of water



0.565 W mÀ1  CÀ1 at 0 C

0.583 W mÀ1  CÀ1 at 10 C

0.599 W mÀ1  CÀ1 at 20 C

0.614 W mÀ1  CÀ1 at 30 C

0.627 W mÀ1  CÀ1 at 40 C

0.640 W mÀ1  CÀ1 at 50 C

0.652 W mÀ1  CÀ1 at 60 C



ln 2

N



0.6931

Avogadro’s number



6.0220 Â 1023 entities molÀ1

0.1196 J molÀ1 m

119,600 kJ molÀ1 nm

28.60 kcal molÀ1 mm

28,600 kcal molÀ1 nm



Nhc



N Ãwv



Saturation mole fraction of water vapor

(i.e., at 100% relative humidity) at

1 atm (0.1013 MPa)



See end of appendix for values

from À30 C to 60 C



PÃwv



Saturation vapor pressure of water



See end of appendix for values

from À30 C to 60 C



Protonic charge



1.602 Â 10À19 coulomb



Gas constant



8.314 J molÀ1 KÀ1

1.987 cal molÀ1 KÀ1

8.314 m3 Pa molÀ1 KÀ1

8.314 Â 10À6 m3 MPa molÀ1 KÀ1

0.08205 liter atm molÀ1 KÀ1

0.08314 liter bar molÀ1 KÀ1

83.14 cm3 bar molÀ1 KÀ1



R



RT



2.271 Â 103 J molÀ1 (m3 Pa molÀ1) at 0 C

2.437 Â 103 J molÀ1 (m3 Pa molÀ1) at 20 C

2.479 Â 103 J molÀ1 (m3 Pa molÀ1) at 25 C

2.271 Â 10À3 m3 MPa molÀ1 at 0 C

2.437 Â 10À3 m3 MPa molÀ1 at 20 C

2.479 Â 10À3 m3 MPa molÀ1 at 25 C

542.4 cal molÀ1 at 0 C

582.2 cal molÀ1 at 20 C

2.271 liter MPa molÀ1 at 0 C

2.437 liter MPa molÀ1 at 20 C

22.71 liter bar molÀ1 at 0 C

24.37 liter bar molÀ1 at 20 C

22,710 cm3 bar molÀ1 at 0 C

24,370 cm3 bar molÀ1 at 20 C

22.41 liter atm molÀ1 at 0 C

24.05 liter atm molÀ1 at 20 C



(continued)



548

Symbol



Appendix I



Description



Magnitude



2.303 RT



5.612 kJ molÀ1 at 20 C

5.708 kJ molÀ1 at 25 C

1.342 kcal molÀ1 at 20 C

1.364 kcal molÀ1 at 25 C

56,120 cm3 bar molÀ1 at 20 C



RT/F



25.3 mV at 20 C

25.7 mV at 25 C



2.303 RT/F



58.2 mV at 20 C

59.2 mV at 25 C

60.2 mV at 30 C



RT=V w



135.0 MPa at 20 C

137.2 MPa at 25 C

32.31 cal cmÀ3 at 20 C

135.0 J cmÀ3 at 20 C

1330 atm at 20 C

1350 bar at 20 C



2:303 RT=V w



310.9 MPa at 20 C

316.2 MPa at 25 C

3063 atm at 20 C

3109 bar at 20 C

Solar constant



1366 W mÀ2

1.958 cal cmÀ2 minuteÀ1

1.366 Â 105 erg cmÀ2 sÀ1

0.1366 W cmÀ2



Specific heat (thermal capacity)

of water (mass basis)



4218 J kgÀ1  CÀ1 at 0  C

4192 J kgÀ1  CÀ1 at 10 C

4182 J kgÀ1  CÀ1 at 20 C

4179 J kgÀ1  CÀ1 at 30 C

4179 J kgÀ1  CÀ1 at 40 C

4181 J kgÀ1  CÀ1 at 50 C

4184 J kgÀ1  CÀ1 at 60 C

1.0074 cal gÀ1  CÀ1 at 0 C

0.9988 cal gÀ1  CÀ1 at 20 C

0.9980 cal gÀ1  CÀ1 at 40 C

0.9991 cal gÀ1  CÀ1 at 60 C



Specific heat (thermal capacity)

of water (mole basis)



75.99 J molÀ1  CÀ1 at 0 C

75.34 J molÀ1  CÀ1 at 20 C

75.28 J molÀ1  CÀ1 at 40 C

75.39 J molÀ1  CÀ1 at 60 C

18.14 cal molÀ1  CÀ1 at 0 C

17.99 cal molÀ1  CÀ1 at 20 C

17.98 cal molÀ1  CÀ1 at 40 C

18.00 cal molÀ1  CÀ1 at 60 C



Vw



Partial molal volume of water



1.805 Â 10À5 m3 molÀ1 at 20 C

1.807 Â 10À5 m3 molÀ1 at 25 C

18.05 cm3 molÀ1 at 20 C



e0



Permittivity of a vacuum



8.854 Â 10À12 coulomb2 mÀ2 NÀ1

8.854 Â 10À12 coulomb mÀ1 VÀ1



Sc



549



Numerical Values of Constants and Coefficients



Symbol



Description



Magnitude



hair



Viscosity of air (dry, 1 atm)



1.716 Â 10À5 Pa s at 0 C

1.765 Â 10À5 Pa s at 10 C

1.813 Â 10À5 Pa s at 20 C

1.860 Â 10À5 Pa s at 30 C

1.907 Â 10À5 Pa s at 40 C

1.953 Â 10À5 Pa s at 50 C

1.999 Â 10À5 Pa s at 60 C



hw



Viscosity of water



1.787 Â 10À3 Pa s at 0 C

1.519 Â 10À3 Pa s at 5 C

1.307 Â 10À3 Pa s at 10 C

1.139 Â 10À3 Pa s at 15 C

1.002 Â 10À3 Pa s at 20 C

0.890 Â 10À3 Pa s at 25 C

0.798 Â 10À3 Pa s at 30 C

0.719 Â 10À3 Pa s at 35 C

0.653 Â 10À3 Pa s at 40 C

0.547 Â 10À3 Pa s at 50 C

0.467 Â 10À3 Pa s at 60 C

0.01002 dyn s cmÀ2 at 20 C

0.01002 poise at 20 C



nair (= hair/rair)



Kinematic viscosity of air (dry, 1 atm)



1.327 Â 10À5 m2 sÀ1 at 0 C

1.415 Â 10À5 m2 sÀ1 at 10 C

1.505 Â 10À5 m2 sÀ1 at 20 C

1.597 Â 10À5 m2 sÀ1 at 30 C

1.691 Â 10À5 m2 sÀ1 at 40 C

1.787 Â 10À5 m2 sÀ1 at 50 C

1.886 Â 10À5 m2 sÀ1 at 60 C



nw ẳ hw =rw ị



Kinematic viscosity of water



1.787 Â 10À6 m2 sÀ1 at 0 C

1.307 Â 10À6 m2 sÀ1 at 10 C

1.004 Â 10À6 m2 sÀ1 at 20 C

0.801 Â 10À6 m2 sÀ1 at 30 C

0.658 Â 10À6 m2 sÀ1 at 40 C

0.554 Â 10À6 m2 sÀ1 at 50 C

0.475 Â 10À6 m2 sÀ1 at 60 C



p



Circumference/diameter of circle



3.14159



rair



Density of air (1 atm, 0.1013 MPa) ,

dry/saturated



1.452/1.451 kg mÀ3 at À30 C

1.395/1.393 kg mÀ3 at À20 C

1.342/1.339 kg mÀ3 at À10 C

1.317/1.312 kg mÀ3 at À5 C

1.293/1.285 kg mÀ3 at 0 C

1.269/1.259 kg mÀ3 at 5 C

1.247/1.232 kg mÀ3 at 10 C

1.225/1.204 kg mÀ3 at l5 C

1.205/1.177 kg mÀ3 at 20 C

1.185/1.147 kg mÀ3 at 25 C

1.165/1.116 kg mÀ3 at 30 C

1.146/1.082 kg mÀ3 at 35 C

1.128/1.045 kg mÀ3 at 40 C

1.093/0.959 kg mÀ3 at 50 C

1.060/0.851 kg mÀ3 at 60 C



rw



Density of water



999.9 kg mÀ3 (0 .9999 g cmÀ3) at 0 C

1000.0 kg mÀ3 (1.0000 g cmÀ3) at 4 C

999.7 kg mÀ3 (0.9997 g cmÀ3) at 10 C



c



(continued)



550

Symbol



Appendix I



Description



Magnitude

999.1 kg mÀ3 (0.9991 g cmÀ3) at 15 C

998.2 kg mÀ3 (0.9982 g cmÀ3) at 20 C

997.1 kg mÀ3 (0.9971 g cmÀ3) at 25 C

995.7 kg mÀ3 (0.9957 g cmÀ3) at 30 C

994.1 kg mÀ3 (0.9941 g cmÀ3) at 35 C

992.2 kg mÀ3 (0.9922 g cmÀ3) at 40 C

988.1 kg mÀ3 (0.9881 g cmÀ3) at 50 C

983.2 kg mÀ3 (0.9832 g cmÀ3) at 60 C

0.00979 MPa mÀ1 (20  C, sea level, 45 latitude)

0.0979 bar mÀ1 (20  C, sea level, 45 latitude)

979 dyn cmÀ3 (20  C, sea level, 45 latitude)

0.0966 atm mÀ1 (20  C, sea level, 45 latitude)



rw g



s



Stefan–Boltzmann constant



5.670 Â 10À8 W mÀ2 KÀ4

5.670 Â 10À12 W cmÀ2 KÀ4

8.130 Â 10À11 cal cmÀ2 minuteÀ1 KÀ4

5.670 Â 10À5 erg cmÀ2 sÀ1 KÀ4



sw



Surface tension of water



0.0756 N mÀ1 (Pa m) at 0 C

0.0749 N mÀ1 (Pa m) at 5 C

0.0742 N mÀ1 (Pa m) at 10 C

0.0735 N mÀ1 (Pa m) at 15 C

0.0728 N mÀ1 (Pa m) at 20 C

0.0720 N mÀ1 (Pa m) at 25 C

0.0712 N mÀ1 (Pa m) at 30 C

0.0704 N mÀ1 (Pa m) at 35 C

0.0696 N mÀ1 (Pa m) at 40 C

0.0679 N mÀ1 (Pa m) at 50 C

0.0612 N mÀ1 (Pa m) at 60 C

7.28 Â 10À8 MPa m at 20 C

72.8 dyn cmÀ1 at 20 C

7.18 Â 10À5 atm cm at 20 C

7.28 Â 10À5 bar cm at 20 C



The correction for height above sea level is À3.09 Â 10À6 m sÀ2 per meter of altitude.

The pressure sensitivity is very slight, with Kair increasing only about 0.0001 W mÀ1  CÀ1 per atmosphere (0.1013 MPa) increase in

pressure.

c

Moist air is less dense than dry air at the same temperature and pressure, because the molecular weight of water (18.0) is less than the

average molecular weight of air (29.0).

a



b



cÃwv

Temperature ( C)

À30

À25

À20

À19

À18

À17

À16

À15

À14

À13

À12

À11

À10



À3



(g m )



(mol mÀ3)



N Ãwv (at 1 atm)



PÃwv (kPa)



0.34

0.55

0.88

0.97

1.06

1.16

1.27

1.39

1.52

1.65

1.80

1.96

2.14



0.019

0.031

0.049

0.054

0.059

0.064

0.070

0.077

0.084

0.092

0.100

0.109

0.119



0.00037

0.00062

0.00102

0.00112

0.00123

0.00135

0.00149

0.00163

0.00179

0.00196

0.00214

0.00234

0.00256



0.038

0.063

0.103

0.114

0.125

0.137

0.151

0.165

0.181

0.198

0.217

0.238

0.260



551



Numerical Values of Constants and Coefficients



cÃwv





Temperature ( C)

À9

À8

À7

À6

À5

À4

À3

À2

À1

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45



À3



(g m )



(mol mÀ3)



N Ãwv (at 1 atm)



PÃwv (kPa)



2.33

2.53

2.75

2.99

3.25

3.52

3.82

4.14

4.48

4.85

5.20

5.56

5.95

6.36

6.80

7.27

7.76

8.28

8.82

9.41

10.02

10.67

11.35

12.08

12.84

13.64

14.49

15.38

16.32

17.31

18.35

19.44

20.59

21.80

23.07

24.40

25.79

27.26

28.79

30.40

32.08

33.85

35.70

37.63

39.65

41.76

43.97

46.28

48.69

51.21

53.83

56.57

59.43

62.41

65.52



0.129

0.141

0.153

0.166

0.180

0.195

0.212

0.230

0.249

0.269

0.288

0.309

0.330

0.353

0.378

0.403

0.431

0.459

0.490

0.522

0.556

0.592

0.630

0.670

0.713

0.757

0.804

0.854

0.906

0.961

1.018

1.079

1.143

1.210

1.280

1.354

1.432

1.513

1.598

1.687

1.781

1.879

1.981

2.089

2.201

2.318

2.441

2.569

2.703

2.842

2.988

3.140

3.299

3.464

3.637



0.00280

0.00306

0.00333

0.00364

0.00396

0.00431

0.00469

0.00511

0.00555

0.00604

0.00649

0.00697

0.00748

0.00803

0.00862

0.00923

0.00989

0.01059

0.01133

0.01212

0.01296

0.01384

0.01478

0.01578

0.01683

0.01795

0.01913

0.02037

0.02169

0.02308

0.02455

0.02610

0.02774

0.02946

0.03128

0.03319

0.03520

0.03723

0.03955

0.04190

0.04437

0.04696

0.04968

0.05253

0.05553

0.05868

0.06197

0.06543

0.06905

0.07285

0.07682

0.08098

0.08533

0.08989

0.09464



0.284

0.310

0.338

0.369

0.402

0.437

0.476

0.517

0.562

0.611

0.657

0.706

0.758

0.816

0.873

0.935

1.002

1.073

1.148

1.228

1.313

1.403

1.498

1.599

1.706

1.819

1.938

2.064

2.198

2.339

2.488

2.645

2.810

2.985

3.169

3.363

3.567

3.782

4.008

4.246

4.495

4.758

5.034

5.323

5.627

5.945

6.280

6.630

6.997

7.381

7.784

8.205

8.646

9.108

9.590

(continued)



552



Appendix I



cÃwv





Temperature ( C)

46

47

48

49

50

55

60



À3



(g m )

68.75

72.12

75.63

79.28

83.08

104.5

130.3



(mol mÀ3)



N Ãwv (at 1 atm)



3.816

4.003

4.198

4.401

4.611

5.798

7.217



0.09962

0.1048

0.1102

0.1159

0.1218

0.1555

0.1967



PÃwv (kPa)

10.09

10.62

11.17

11.74

12.34

15.75

19.93



Note: Various equations exist for calculating the saturation vapor pressure PÃwv as a function of temperature T, the standard one

being the Goff–Gratch equation (see http://cires.colorado.edu/$voemel/vp.html).

To calculate cwv , N wv , or Pwv at a given temperature, simply multiply cÃwv, N Ãwv , or PÃwv , as appropriate, by the relative humidity

(as a decimal) at that temperature; for example, cÃwv for 60% relative humidity at 20 C is (17.31)(0.60) or 10.39 g mÀ3 and

(0.961)(0.60) or 0.577 mol mÀ3. Also note that cwv and Pwv are nearly independent of ambient pressure (see Appendix IV.D),

whereas N wv is inversely proportional to it (the above values of N Ãwv are for an ambient pressure of 1 atm).



Appendix II

Conversion Factors and

Definitions

Quantity



Equals



acre



43,560 ft2

4047 m2

0.4047 hectare

4.047 Â 10À3 km2

1 coulomb sÀ1

1 V ohmÀ1

10À10 m

0.1 nm

10À8 cm

0.1013 MPa

1.013 Â 105 Pa

1.013 Â 105 N mÀ2

1.013 Â 105 J mÀ3

1.013 bar

1.013 Â 106 dyn cmÀ2

1.033 Â 104 kg mÀ2 (at sea

level, 45 latitude)a

1.033 kg cmÀ2 (at sea level,

45 latitude)a

760 mm Hg (at sea level,

45 latitude)a

10.35 m water (at sea level,

45 latitude, 20 C)a

14.70 pounds (lb) inchÀ2 (psi)

0.1 MPa

100 kPa

105 Pa

105 N mÀ2

105 J mÀ3

106 dyn cmÀ2

0.9869 atm

1.020 kg cmÀ2 (at sea level,

45 latitude)a

750 mm Hg (at sea level,

45 latitude)a



ampere (A)







angstrom (A )



atmosphere (atm)



bar



Quantity



becquerel (Bq)

British thermal

unit (Btu)

Btu hourÀ1

calorie (cal)

cal cmÀ2

cal cmÀ2 minuteÀ1

cal cmÀ1  CÀ1 minuteÀ1

cal cmÀ1  CÀ1 sÀ1

cal cmÀ3

cal gÀ1

cal mÀ2 sÀ1

cal minuteÀ1

cal sÀ1

candela (cd)

Celsius ( C)







cm

cm barÀ1 sÀ1

cm2 barÀ1 sÀ1

cm sÀ1



Equals

10.22 m water (at sea level,

45 latitude, 20 C)a

14.50 pounds (lb) inchÀ2 (psi)

1 disintegration sÀ1

2.703 Â 10À11 curie

1055 J

252.0 cal

0.2931 W

4.184 J

4.184 Â 107 erg

1 langley

4.184 Â 104 J mÀ2

697.8 W mÀ2

6.978 Â 105 erg cmÀ2 sÀ1

1 langley minuteÀ1

6.978 W mÀ1  CÀ1

418.4 W mÀ1  CÀ1

41.84 bar

41.84 J kgÀ1

4.184 W mÀ2

0.06978 J sÀ1

0.06978 W

4.184 J sÀ1

4.184 W

1 lumen steradianÀ1

( C + 273.15) K

[(9/5)( C) + 32]  F

0.3937 inch

10À7 m PaÀ1 sÀ1

10À9 m2 PaÀ1 sÀ1

10À3 m2 MPaÀ1 sÀ1

0.01 m sÀ1

10 mm sÀ1

0.03600 km hourÀ1

0.02237 mile hourÀ1

(continued)



553



554



Quantity

3



cm



CO2 concentration

coulomb (C)

coulomb V

curie (Ci)



dalton (Da)

day

degree (angle) ( )

dyn



dyn cm

dyn cmÀ1

dyn cmÀ2

einstein

erg



erg cmÀ2 sÀ1



eV

eV moleculeÀ1

farad (F)

Fahrenheit ( F)

foot (ft)





foot2

foot3



footcandle (fc)

foot-pound

foot sÀ1

g

g cmÀ2



Appendix II



Equals

À6



Quantity

3



10 m

1 ml

see Table 8.2

1 J VÀ1

1 ampere s

1J

3.7 Â 1010 Bq

3.7 Â 1010

disintegrations sÀ1

1.661 Â 10À24 g

(1/12 mass of 12C)

86,400 s

1440 minutes

0.01745 radian

1 erg cmÀ1

1 g cm sÀ2

10À5 N

1 erg

10À7 J

10À3 N mÀ1

0.1 N mÀ2

10À6 bar

1 mol (6.022 Â 1023)

photons

1 dyn cm

1 g cm2 sÀ2

10À7 J

6.242 Â 1011 eV

2.390 Â 10À8 cal

2.390 Â 10À11 kcal

10À3 J mÀ2 sÀ1

10À3 W mÀ2

10À7 W cmÀ2

1.433 Â 10À6 cal cmÀ2

minuteÀ1

1.602 Â 10À19 J

1.602 Â 10À12 erg

96.49 kJ molÀ1

23.06 kcal molÀ1

1 coulomb VÀ1

( F À 32)(5/9)  C

30.48 cm

0.3048 m

9.290 Â 10À2 m2

2.832 Â 10À2 m3

28.32 liter

7.480 gallons

(U.S.)

1 lumen ftÀ2

10.76 lux

1.356 J

1.097 km hourÀ1

0.6818 mile hourÀ1

1 dyn s2 cmÀ1

10À3 N s2 mÀ1

10 kg mÀ2



À3



g cm

g dmÀ2 hourÀ1

gallon (British)

gallon (U.S.)

gallon (U.S.) acreÀ1

grain (based on wheat)

grain footÀ3

hectare (ha)

hertz (H)

horsepower (hp)

hour (h)

inch (in.)

inch2

inch3

joule (J)



J kgÀ1

J molÀ1

J sÀ1

kcal

kcal hourÀ1

kcal molÀ1

kDa

kelvin (K)

kg

kg hectareÀ1

kg mÀ2



kg mÀ3

kg H2O

kJ molÀ1

km

km2

km hourÀ1



Equals

1000 kg mÀ3

27.78 mg mÀ2 sÀ1

4.546 liter

4.546 Â 10À3 m3

3.785 liter

3.785 Â 10À3 m3

0.1337 ft3

9.354 liter hectareÀ1

0.06480 g

2.288 g mÀ3

104 m2

2.471 acres

1 cycle sÀ1

745.7 W

3600 s

25.40 mm

6.452 Â 10À4 m2

1.639 Â 10À5 m3

0.01639 liter

1Nm

1Ws

1 m3 Pa

1 kg m2 sÀ2

1 coulomb V

107 erg

0.2388 cal

10 cm3 bar

2.388 Â 10À4 cal gÀ1

0.2388 cal molÀ1

W

4.187 kJ

4.187 Â 1010 erg

1.163 W

4.187 kJ molÀ1

0.04339 eV moleculeÀ1

1.661 Â 10À21 g (1000 Â

1/12 mass of 12C)

(K À 273.15)  C

2.2046 pounds (lb)a

0.001 tonne (metric ton)

0.893 pound (lb) acreÀ1

0.1 g cmÀ2

1.422 Â 10À3 pound (lb) in.À2 (psi)

9.807 Pa (9.807 N mÀ2) (at sea level,

45 latitude: see g, Appendix I)

10À3 g cmÀ3

1 liter H2O at 4 C

0.01036 eV moleculeÀ1

1000 m

0.6214 mile

100 hectares

247.1 acres

0.3861 mile2

0.2778 m sÀ1

27.78 cm sÀ1

0.6214 mile hourÀ1

(continued)



Tài liệu bạn tìm kiếm đã sẵn sàng tải về

Appendix I. Numerical Values of Constants and Coeffi cients

Tải bản đầy đủ ngay(0 tr)

×