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Unread 12-30-2002, 11:20 PM   #20
joemac
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Join Date: Dec 2002
Location: Dallas
Posts: 339
Default Some facts;

Aluminum Properties

Discovered 1827, Woehler
Atomic Weight 26.981539
Atomic Number 13
Single Isotope, 27
Crystal Structure: face centered cubic
Density 2.702 g/cm**3
Resistivity 2.650e-8 ohm-meter
Thermal conductivity 237 W/m/K
Molar volume 10.061 cm**3/mole
Coefficient of Linear Thermal Expansion 23.2e-6 /K
Molar heat capacity 24.35 J/mole/K
Melting point 933.52K
Boiling point 2740K

Copper Properties

Naturally occurring element
Atomic Weight 63.546
Atomic Number 29
Two isotopes:
63 (69.17%)
65 (30.83%)
Crystal Structure: face centered cubic
Density 8.92 g/cm**3
Resistivity 1.673e-8 ohm-meter
Thermal conductivity 401 W/m/K
Molar volume 6.712 cm**3/mole
Coefficient of Linear Thermal Expansion 16.6e-6 /K
Molar heat capacity 24.435 J/mole/K
Melting point 1336.6 K
Boiling point 2840 K
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