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Le gypse (CaSO4·2H2O) est la matière première du plâtre. Il est chauffé entre 100 et 200 °C pour obtenir par déshydratation partielle l'hémihydrate (CaSO4 · 1 2H2O) qui, mélangé à de l'eau, …
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In summary, the chemical formula Caso4.1/2H2O represents the stoichiometric ratio of calcium sulfate hemihydrate, commonly known as plaster of Paris. The formula signifies the presence …
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Instructions on balancing chemical equations: Enter an equation of a chemical reaction and click 'Balance'. The answer will appear below Always use the upper case for the first character in …
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Question: 4. Consider the following minerals: anhydrite: CaSO4 bassanite: CaSO4⋅1/2H2O (the stuff of which plaster of paris is made) gyspum: CaSO4⋅2H2O a) If all of the pure water in the system is vapor (i.e., no liquid …
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Abstract The bonding nature of water in gypsum, CaSO 4 ·2H 2 O, and hemihydrate, CaSO 4 ·1/2H 2 O, was suggested by characteristic absorption bands of water and sulphate ions. The …
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The theoretical and equilibrium morphology of gypsum (CaSO4·2H2O) is reassessed, starting from the historical papers by Simon and Bienfait (1965) and by Heijnen and Hartman (1991). …
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В этой статье мы рассмотрим степень окисления элемента CaSO4, также известного как гипс. Узнаем, как определить его степень окисления и как она влияет на свойства …
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The formula CaSO₄.1/2 H₂O means that two formula units of CaSO₄ shares one molecule of water, in such way that the effective water of crystallisation of one unit of calcium …
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2N CAS 1 ,,
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