Dragonium (Dr) is an element only found in the scales of dragons. It is known to exist only in the oxidation state of +3, and it is a metal. After dragons go for their morning swim in the Pacific Ocean, their scales change color due to the formation of a chlorine salt of dragonium which crystallizes out with four water molecules per each dragonium atom. Select the name of this compound.

Q: products

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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".