Anhydrous

Science / Chemistry / Anhydrous: A compound with all water removed, especially water of hydration. For example, strongly heating copper(II) sulfate pentahydrate (CuSO4?·5H2O) produces anhydrous copper(II) sulfate (CuSO4).

Lutetium (Lu)

Science / Periodic Table of Elements / Lutetium (Lu): Atomic number: 71, Atomic mass: 174.97 g.mol -1, Electronegativity: 1.2, Density: 9.7 g.cm-3 at 20°C, Melting point: 1663 °C, Boiling point: 3395 °C, Vanderwaals radius: unknown, Ionic radius: unkn MORE

Ammonia

Business / Agriculture / Ammonia: A pungent alkaline gas, a compound of nitrogen and hydrogen (NH3). It is formed naturally when bacteria decompose nitrogen-containing compounds, such as manures. Emissions of ammonia can be a problem MORE

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