A 0.604 g0.604 g sample of a metal, M, reacts completely with sulfuric acid according to   M(s)+H2SO4(aq)⟶MSO4(aq)+H2(g)M(s)+H2SO4(aq)⟶MSO4(aq)+H2(g)   A volume of 279 mL279 mL of hydrogen is collected over water; the water level in the collecting vessel is the same as the outside level. Atmospheric pressure is 756.0 Torr, and the temperature is 25 °C. The vapor pressure of water at 25 °C is 23.8 Torr. Calculate the molar mass of the metal.

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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".