mistiehaas
20.03.2021 •
Chemistry
X+YSO4
XSO4 + Y
Y +XSO4
No reaction
Out of the two elements, 'X' and 'Y', which is more reactive and why?
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Ответ:
Yes, the Plaster of Paris is often used today to create casts of impressions.
Explanation:
This impression of material is made up of plaster of Paris, to which modifier has been added to regulate the setting expansion and the setting time.
An impression is made for the construction of tray, statue or diagnosis.
Impression plaster is not used anymore for the dental impression, it has been replaced by the less rigid material such as Elastoplast.