A student heated a 2.00 g of a hydrate of CoCl2 to drive off the water. After cooling the sample, the student found the mass of the anhydrate to be 1.09 g. a. What is the mass (g) of water released? b. What is the percent of water of hydration? c. What is the formula of the hydrate?

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".