A. What is the density of an unknown liquid if 15.00 mL of the unknown has a mass of 12.257 g? B. A sample of chromium is heated in a crucible over a Bruson burner until the chromium turns into a grey powder. If the original chromium had a mass of 0.357 g and the chromium oxide has a mass of 0.522 g, what is the empirical formula of the chromium oxide?

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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".