How to use the stoichiometry mass-to-mass calculator
Convert grams of reactant to grams of product with coefficients. Enter given mass, molar mass given, coefficient given, coefficient wanted, molar mass wanted in the fields above; the wanted mass is computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- m — Given mass (g)
- Mg — Molar mass given (g/mol)
- cg — Coefficient given
- cw — Coefficient wanted
- Mw — Molar mass wanted (g/mol)
Worked example
With given mass = 20 g, molar mass given = 18.015 g/mol, coefficient given = 2, coefficient wanted = 2, molar mass wanted = 32 g/mol, the calculator gives wanted mass ≈ 35.52595 g.
Frequently asked questions
What is the formula for the stoichiometry mass-to-mass calculation?
Wanted mass (g) = m / Mg × cw / cg × Mw. Here m is given mass (g), Mg is molar mass given (g/mol), cg is coefficient given, cw is coefficient wanted, Mw is molar mass wanted (g/mol).
What inputs do I need for the stoichiometry mass-to-mass calculator?
You need given mass in g, molar mass given in g/mol, coefficient given, coefficient wanted, molar mass wanted in g/mol. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.