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Fundamental Constants
Avogadro's
NA 6.02214×1023
number
Volume Conversion Factors
8.3145
Gas constant
Faraday's
constant
Planck's
constant
Boltzmann’s
constant
Speed of
light
Electron's
charge
h
6.62608×10-34 J·s
k
1.38066×10-23
2.9979246×10
8
-31
9.10939×10 kg
0.00054858 u
e
1.000 gal
=
3.785×103 cm3
=
=
-2
3
2
3
2.83×10 m
9.46×10 cm
Energy Conversion Factors
96,485
Electron's
mass
10 cm
1.00 qt
F
c
=
1.00 ft
0.08206
3
1L
3
R
3
-1.60218×10-19 C
Proton's
mass
1.672623×10-27 kg
1.0073 u
Proton's
charge
1.60218×10-19 C
Neutron's
mass
1.672493×10-27 kg
1.0087 u
Hydrogen-1
mass
1.0078 u
1 cal
=
4.184 J
1 eV
=
1.62018×10-19 J
1 eV
=
96.485 kJ·mol-1
1 C·V
=
1J
1 kWh
=
3.600×103 kJ
1 L·atm
=
101.325 J
Pressure Conversion Factors
1 atm
=
1.01325×105 Pa
1 atm
=
760 Torr
760 mm Hg
1 atm
=
14.70 psi
1 bar
=
105 Pa
Mass Conversion Factors
2.205 lb
=
1.000 kg
1.000 lb
=
453.6 g
1.000 oz
=
28.35 g
1.000 ton
=
907.2 kg
1u
= 1.6605×10-27 kg
Length Conversion Factors
1.094 yd
=
1.000 m
0.3937 in
=
1.000 cm
0.6214 mi
=
1.000 km
1Å
=
10-10 m
Avg. Bond Energy
Gas
a
b
He
0.034
0.0237
Ne
0.211
0.0171
Ar
1.35
0.0322
Kr
2.32
0.0398
Xe
4.19
0.0511
H2
0.244
0.0266
N2
1.39
0.0391
O2
1.36
0.0318
Cl2
6.49
0.0562
CO2
3.59
0.0427
CH4
2.25
0.0428
H-H
432
H-Br
363
H-F
565
H-Cl
427
C-H
413
C-C
347
C-N
305
C-O
358
N-H
391
N-N
160
O-H
467
O-O
146
F-F
154
Cl-Cl
239
Br-Br
193
O=O
495
C=O*
745
CO
1072
NN
941
CN
891
*C=O (CO2) = 799
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