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sci.stoichiometry-calc Calculator
Calculates moles, masses, and volumes of reactants and products from balanced chemical equations and given quantities. If 2 H₂ + O₂ → 2 H₂O, then 2 mol H₂ (4 g) reacts with 1 mol O₂ (32 g) to produce 2 mol H₂O (36 g).
Inputs
Reactant Mass G
Total mass (kg). Distinct from weight — weight = mass × gravity. Mass is constant; weight varies with location.
Reactant Molar Mass
Mass of one mole of the substance (g/mol). Found by summing atomic weights. Converts between grams and moles.
Product Molar Mass
Mass of one mole of the substance (g/mol). Found by summing atomic weights. Converts between grams and moles.
Mole Ratio
Reference formula or conversion factor shown for context.
Yield Pct
Reference formula or conversion factor shown for context.
Results
theoretical yield (g)
Reference formula or conversion factor shown for context.
actual yield (g)
Reference formula or conversion factor shown for context.
moles of reactant
Quantity in moles. 1 mol = 6.022 x 10^23 particles. Moles = mass / molar mass.
moles of product
The result of multiplying all input values together.