Stoichiometry Calculator

This converts between the species in a balanced chemical equation. Type the equation, say how much you have of any one substance in grams or moles, and it returns the amount of every other species in both, with the molar masses worked out from the formulas and the mole ratio that carried you across. A second action takes a mass for each reactant and finds which one limits the reaction, how much of every product it allows and what is left over. The equation has to be balanced already: this checks the atoms on both sides and refuses to convert anything until they match, rather than quietly balancing an equation you mistyped.