Chemistry Conversion Factors And Constants
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1Chemistry Conversion Factors and Constants
METRIC CONVERSION FACTORS
Prefix
Abbreviation
Conversion Factor
For Example
For Example
6
6
-6
Mega-
M
1000000
10
1 Megabyte = 1 x 10
bytes
1 byte = 10
Megabytes
3
kilo-
k
1000
10
1 kilometer = 1000 meters
1 meter = 0.001 kilometers
-1
deci-
d
0.1
10
1 deciliter = 0.1 liters
1 liter = 10 deciliters
-2
centi-
c
0.01
10
1 centimeter = 0.01 meters
1 meter = 100 centimeters
-3
milli-
m
0.001
10
1 milliliter = 0.001 liters
1 liter = 1000 milliliters
µ
-6
-6
6
micro-
0.000001
10
1 microgram = 10
grams
1 gram = 10
micrograms
-9
-9
9
nano
n
0.000000001
10
1 nanometer = 10
meters
1 meter = 10
nanometers
-12
-9
12
pico
p
0.000000000001 10
1 picometer = 10
meters
1 meter = 10
picometers
OTHER CONVERSION FACTORS AND CONSTANTS
Volume
Weight/Mass
Length/Distance
1 liter = 1.0567 quarts
16 ounces = 1 pound
1 inch = 2.54 centimeters
3
1 mL = 1 cm
1 kilogram = 2.2 pounds
1 mile = 5280 feet = 1.609 kilometers
1 gallon = 3.78 liters
454 grams = 1 pound
1 yard = 3 feet = 36 inches = 0.9144 meters
1 gallon = 4 quarts = 128 fluid ounces
1 ton = 2000 pounds
1 meter = 39.37 inches = 3.281 feet = 1.094 yards
1 quart = 2 pints = 32 fluid ounces
1 kilometer = 1094 yards = 0.6215 miles
1 pint = 2 cups = 16 fluid ounces
Density of Water: 1.00 g/mL
Energy: 1 cal = 4.184 J
Temperature
Time
1 year = 365 days = 12 months = 52 weeks
5
(
)
9
=
−
=
⋅
+
º
C
º
F
32
º
F
º
C
32
and
1 day = 24 hours
9
5
1 hour = 60 minutes
1 minute = 60 seconds
Kelvins = ºC + 273.15
Pressure Units: 1 atm = 760 mmHg = 101.325 kPa = 101325 Pa = 1.01325 bar = 14.7 psi = 29.92 inches Hg
Useful Constants:
8
23
Speed of Light (c) = 3.00 x 10
m/s
Avogadro’s Number (N
) = 6.02 x 10
items / mole
A
-34
⋅
Planck’s Constant (h) = 6.63 x 10
J ⦁ s
L
atm
Ideal Gas Constant (R) = 0.0821
⋅
mol
K
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