You placed a sample of a hydrate of calcium chloride (CaCl₂) in a weighed test tube, and weighed the filled test tube. Then you heated it until no more water was evolved. After cooling, you weighed the test tube again. Mass of empty tube (g) 13.99 Mass of filled tube before heating (g) 18.09 Mass after cooling (g) 16.8 Calculate the following: Moles of water evolved

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A: Answer

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A:

Q: 5.

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A:

Q: A substance that changes color when a solution becomes acid or basic is called

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A:

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A:

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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".