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Molar volume vs. pressure for α iron at room temperature. At least four allotropes of iron (differing atom arrangements in the solid) are known, conventionally denoted α, γ, δ, and ε. The first three forms are observed at ordinary pressures. As molten iron cools past its freezing point of 1538 °C, it crystallizes into its δ allotrope ...
26 Fe iron; use: 1811 K: 1538 °C: 2800 °F WEL: ... freezing point 1357.77 K ... unless noted. Triple point temperature values (marked "tp") are not valid at ...
When the "characteristic freezing point" of a ... Iron: 7.874: 1,811: 3,134 ... The temperature at which melting begins for a mixture is known as the solidus ...
A Assuming an altitude of 194 metres above mean sea level (the worldwide median altitude of human habitation), an indoor temperature of 23 °C, a dewpoint of 9 °C (40.85% relative humidity), and 760 mmHg sea level–corrected barometric pressure (molar water vapor content = 1.16%). B Calculated values *Derived data by calculation.
Freezing point (°C) K f (°C⋅kg/mol) Data source; Aniline: 184.3 3.69 –5.96 –5.87 K b & K f [1] Lauric acid: 298.9 44 –3.9 Acetic acid: 1.04 117.9 3.14 16.6 ...
Reference Kelvin Celsius Fahrenheit; 1 H hydrogen (H 2) ; use: 20.271 K: −252.879 °C: −423.182 °F WebEl: 20.28 K: −252.87 °C: −423.17 °F CRC: −252.879 °C: Lange
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Most liquids freeze by crystallization, formation of crystalline solid from the uniform liquid. This is a first-order thermodynamic phase transition, which means that as long as solid and liquid coexist, the temperature of the whole system remains very nearly equal to the melting point due to the slow removal of heat when in contact with air, which is a poor heat conductor.