In the gravimetric analysis of iron, hydroxide may be added to a solution containing Fe3+ to precipitate a gelatinous mess which is ignited to form Fe2O3. If 0.3864 grams of Fe2O3 were formed from the ignition of the precipitated mess, how many grams of FeCO3 were contained in the original sample analyzed

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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".