The Medical College - Page 16
Reference Tables for Chemistry
PHYSICAL CONSTANTS AND CONVERSION
FACTORS
STANDARD UNITS
Symbol
Name
Quantity
m
meter
length
kg
kilogram
mass
Pa
pascal
pressure
K
kelvin
thermodynamic temperature
mol
mole
amount of substance
J
joule
energy, work, quantity of heat
s
second
time
C
coulomb
quantity of electricity
V
volt
electric potential,
potential difference
L
liter
volume
Name
Symbol
Value(s)
Units
Angstrom unit
Å
1
10
10 m
meter
Avogadro number
NA
6.02
10
23 per mol
Charge of electron
e
1.60
10
19 C
coulomb
Electron-volt
eV
1.60
10
19 J
joule
Speed of light
c
3.00
10
8 m/s
meters/second
Planck's constant
h
6.63
10
34 J s
joule-second
1.58
10
37 kcal s
kilocalorie-second
Universal gas constant
R
0.0821 L atm/mol K
liter-atmosphere/mole-kelvin
1.98 cal/mol K
calories/mole-kelvin
8.31 J/mol K
joules/mole-kelvin
Atomic mass unit
U
1.66
10
24 g
gram
Volume standard, liter
L
1
10
3 cm3
1 dm
3
cubic centimeters,
cubic decimeter
Standard pressure,
atm
101.3 kPa
kilopascals
atmosphere
760 mmHg
millimeters of mercury
760 torr
torr
Heat equivalent,
kcal
4.19
10
3 J
joules
kilocalorie
Physical Constants for H2O
Molal freezing point depression
................
1.86 C/m
Molal boiling point elevation
.....................
0.52 C/m
Heat of fusion
....................................... 79.72 cal/g
Heat of vaporization
...............................539.4 cal/g
Selected Prefixes
Factor
Prefix
Symbol
10
12
tera
T
10
9
giga
G
10
6
mega
M
10
3
kilo
k
10
1
deci
d
10
2
centi
c
10
3
milli
m
10
6
micro
10
9
nano
n
10
12
pico
p
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