39. Solution to Chemistry Problem
1. During the following reaction of thermal decomposition of 1.8 g of calcium sulfate dihydrate, 1.7 g of crystal hydrate of unknown composition was obtained:
CaSO4*2H2O=CaSO4*nH2O (2-n)H2O
Determine the elemental composition of the crystal hydrate CaSO4*nH2O
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