calcium sulphate hemihydrate = Caso4.1/2H2o
it is form when gypsum(CaSo4.2H2o)is heated at a temperature of 373 kelvin and looses water molicules and finally becomes calcium sulphate hemihydrate(caso4.1/2h2o)
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The chemical formula of calcium sulfate is CaSO4.
There are two main types of plaster of Paris: Type I, which is used for general purpose applications such as sculptures and molds; and Type II, which is a pottery grade plaster with higher strength and durability, making it more suitable for casting ceramics and other precision work.
Plaster of Paris is a compound, as it is composed of specific elements (calcium, sulfur, and water) that are combined in a fixed ratio to create a distinct substance with unique properties.
There are approximately 226.8 grams in 8 ounces of plaster of Paris.
The adhesive used in plaster of Paris is water. When water is added to plaster of Paris powder, a chemical reaction occurs that causes the powder to transform into a thick paste that can then be applied to a surface before hardening.