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April 18, 2014

Homework Help: College Chemistry

Posted by Roy on Saturday, October 8, 2011 at 9:01am.

Plaster of Paris is the compound calcium sulfate hemihydrate, CaSO4*1/2H2O

What mass of water is liberated when a 2.763 gram sample is heated to constant mass?

The sample is 2.763 grams

How much of the 2.763 gram sample is water? I need an amount in grams.

Amount of anhyrdate + amount of water = amount of sample

Please help

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