Sublimation

Science / Chemistry / Sublimation: Conversion of a solid directly into a gas, without first melting into a liquid.

Enthalpy Of Sublimation

Science / Chemistry / Enthalpy Of Sublimation: The change in enthalpy when one mole of solid vaporizes to form one mole of gas. Enthalpies of sublimation are always positive because vaporization involves overcoming most of the intermolecular attra MORE

Frost

Science / Weather / Frost: The covering of ice crystals that forms by direct sublimation on exposed surfaces whose temperature is below freezing. MORE

Crystallization

Science / Chemistry / Crystallization: Production of a purer sample of a substance by slow precipitation of crystals from a solution of the substance. MORE

Arsenic (As)

Science / Periodic Table of Elements / Arsenic (As): Atomic number: 33, Atomic mass: 74.9216 g.mol -1, Electronegativity: 2.0, Density: 5.7 g.cm-3 at 14°C, Melting point: 814 °C (36 atm), Boiling point: 615 °C (sublimation), Vanderwaals radius: 0.139 MORE

Antoine Equation

Science / Chemistry / Antoine Equation: A simple 3-parameter fit to experimental vapor pressures measured over a restricted temperature range: log P = A - . B, T + C, where A, B, and C are 'Antoine coefficients' that vary from substance to MORE

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