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What is the percent weight composition of water in plaster of paris? |
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Answer» SOLUTION :Chemical formula of plaster of paris is ` CaSO_(4). (1)/(2) H_(2)O` Formula weight of plaster of paris = 136 + 9 = 145 145 grams of plaster of paris = 9 grams water 100 grams of plaster of paris = ? % weight composition of water `= (9xx100)/(145) = 6.2` |
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