abt melting point and boiling point

Nitrogen:
Melting point 63.15 K
(-210.00 °C, -346.00 °F)
Boiling point 77.36 K
(-195.79 °C, -320.42 °F)

Oxygen:
Melting point 54.36 K
(-218.79 °C, -361.82 °F)
Boiling point 90.20 K
(-182.95 °C, -297.31 °F)

Iron:
Melting point 1811 K
(1538 °C, 2800 °F)
Boiling point 3134 K
(2861 °C, 5182 °F)

Glass: it depends.. Pure silica (SiO2) has a melting point of about 2,000° C (3,632° F). Others varied and is with a lower melting point (1400 - 1600 ° C)

2007-09-13 10:41:04 補充：
MercuryMelting point 234.32 K(-38.83 °C, -37.89 °F) Boiling point 629.88 K(356.73 °C, 674.11 °F)

nitrogen:
- Melting point -210 C
- Boiling point @ 101.325 kPa (1 atm): -195.8 C

oxygen
- Melting point 218.79 C
- Boiling point @ 101.325 kPa (1 atm): -182.98 C

iron
-Melting point (1538 °C)
- Boiling point (2861 °C)

glass
- Depending on it's composition, it can have a melting point of about 1400-1600 °C.