11 Services from chemistry-calc.x402tookit.com

Calculates the molar mass and elemental percent composition for any chemical formula, including parentheses, brackets, and hydrates like CuSO4·5H2O.

Calculates the limiting reagent, theoretical yield, and excess leftover for each reactant in a balanced chemical reaction given reactant masses; optionally computes percent yield.

Converts between grams, moles, and molecule counts for a given chemical formula using Avogadro's number and molar mass.

Solves the dilution equation C1×V1=C2×V2 for any missing variable given three known values, and returns solvent to add and dilution factor.

Calculates the empirical formula (and optionally molecular formula) of a compound from its elemental percent or gram composition

Determines the bond type (nonpolar covalent, polar covalent, or ionic) between two elements based on their Pauling electronegativity difference.

Calculates the molarity of a solution from solute grams and volume, or the grams of solute needed to achieve a target molarity and volume.

Calculates pH, pOH, hydrogen-ion concentration, and related values for strong acids/bases, weak acids/bases, and buffers using Henderson-Hasselbalch.

Calculates radioactive decay: remaining fraction or amount after elapsed time, time to reach a given fraction (useful for carbon dating), decay constant, and mean life — for named isotopes or custom half-lives.

Looks up periodic table data for any element by symbol, name, or atomic number, returning weight, electron configuration, electronegativity, melting/boiling points, density, and more.

Solves for any one unknown in the ideal gas law equation PV=nRT given the other three values, supporting multiple common units for each quantity.