The compound P4S3 is used in matches. It reacts with oxygen to produce P4010 and SO2. The unbalanced chemical equation is shown below. P4S3(s) + O2(g) P4O10(s) + SO2(g) What mass of SO2 is produced from the combustion of 1.37 g P4S3?

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Q: If the pH of a 0.15 M acid is 3.6, what is the Ka? 10:3

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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".