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August 2, 2015

Homework Help: Chemistry

Posted by Karen on Monday, October 4, 2010 at 6:48pm.

A 1.994-g sample of gypsum, a hydrated salt of calcium sulfate, CaSO_4_, is heated at a temperture greater than 170 degrees C in a crucible until a constant mass is reached. The mass of the anhydrous CaSO_4_ salt is 1.577g. What is the mass percent of water in the hydrated calcium sulfate salt?

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