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Environmental Conversion factors and formulas for constants
Basic Units |
Aditional Units |
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Quantity |
Name |
Symbol |
Physical quantity |
Unit |
Name |
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| length | meter | m | Volume | liter=1000 cm(3)=10(-3)m(3) | liter (l) | ||
| mass | kilogram | kg | ml = cm(3) = 10(-6)m(3) | milliliter | |||
| time | second | s | Density | g cm(-3) = g/ml | |||
| degree | kelvin | K | Molar concentration | M = mol 1(-1) | molarity | ||
| number | mole | mol | Length | A = 10(-10)m = 0.1 nm = 100 pm | angstrom | ||
| current | ampere | A | Pressure | atm=760 torr=101.325x10(3)Nm(-2) | atmosphere | ||
| torr = 1.32 x 10(-3) atm | torr | ||||||
Symbol |
Prefix |
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E |
exa |
10(18) |
1,000,000,000,000,000,000 |
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P |
peta |
10(15) |
1,000,000,000,000,000 |
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T |
tera |
10(12) |
1,000,000,000,000 |
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G |
giga |
10(9) |
1,000,000,000 |
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M |
mega |
10(6) |
1,000,000 |
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k |
kilo |
10(3) |
1,000 |
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h |
hecto |
10(2) |
100 |
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da |
deka |
10(1) |
10 |
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d |
deci |
10(-1) |
0.1 |
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c |
centi |
10(-2) |
0.01 |
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m |
milli |
10(-3) |
0.001 |
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µ |
micro |
10(-6) |
0.000,001 |
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n |
nano |
10(-9) |
0.000,000,001 |
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p |
pico |
10(-12) |
0.000,000,000,001 |
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f |
femto |
10(-15) |
0.000,000,000,000,001 |
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a |
atto |
10(-18) |
0.000,000,000,000,000,001 |
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Conversion Factors (Energy) |
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| 1 electron volt (eV) = 1.60 x 10(-19) J | |||||
| 1 erg = 6.24 x 10(11) eV = 2.39 x 10(-11) kcal | |||||
| 1 kcal = 4.184 kJ | |||||
| 1 volt coulomb = 1 joule = 10(7) ergs = 2.39 x 10(-1) cal | |||||
| 1 atomic unit (au) of energy = 27.21 eV molecule(-1) = 4.36 x 10(-18) J molecule(-1) | |||||
Physical Constants |
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| c | Velocity of Light | 3.00 x 10(8)m s(-1) | |||
| h | Planck's Constant | 6.63 x 10(-34) Js | |||
| N(Sub)A | Avogadro's Number | 6.02 x 10(23) mol(-1) | |||
| F | Farady's Constant | 2.89 x 10(14) esu mol(-1) | |||
| 9.65 x 10(4)C mol(1-) = 9.65 x 10(4)JV(-1) | |||||
| 2.31 x 10(4) cal V(-1) mol(-1) | |||||
| V(Sub)O | Molar Volume of Gas at STP | 22.4 1 mol(-1) | |||
| k | Boltzmann's Constant | 1.38 x 10(-23) J K(-1) molecule(-1) | |||
| e | Charge on the Electron | 4.80 x 10(-10) esu (cm3/2g1/2s(-1)) | |||
| 1.60 x 10(-19) C | |||||
| m(Sub)e | Mass of the Electron | 9.11 x 10(-31)kg | |||
| amu | Atomic Mass Unit | 1.66 x 10(-27)kg | |||
| R | Gas Constant | 0.082 1 atm K(-1) mol(-1) | |||
| 8.31 J K(-1) mol(-1) | |||||
| 1.99 cal K(-1)mol(-1) | |||||
| a(sub)O | Bohr Radius | 0.529 A = 52.9 pm | |||
| K(Sub)W | Dissociation Constant Water | 1 x 10(-14) | |||
2.303 RT = 1.364 kcal mol(-1) = 5.71 kj mol(-1) = 0.0592 V at 298 K |
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Geotechnical Services, Inc. |
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