Chemistry

Convert moles to atoms with Avogadro’s constant. Add a chemical formula to count all atoms or one element in a compound.

Find mole fraction from moles or solve for unknown moles needed to reach a target fraction in a 2 to 4 component mixture.

Convert between moles, grams, particles, gas volume at STP, and solution volume with clear steps and chemistry-friendly wording.

Find gas molar mass from mass, pressure, volume, and temperature with unit-safe inputs, moles shown, and setup checks.

Calculate molality from solute moles or solute mass, molar mass, and solvent mass in grams or kilograms.

Convert between pH, pOH, [H+], and [OH-] with optional temperature-aware pKw and clear checks for notation and valid ranges.

Convert grams to moles from a chemical formula or a known molar mass in g/mol, with the calculation shown.

Find the simplest chemical formula from elemental mass percentages or grams, with mole ratios, subscripts, and molar mass.

Convert particles, moles, and mass with Avogadro’s constant, plus particle-type guidance to avoid common chemistry mistakes.

Calculate atom economy from a balanced reaction, check equation balance, and see a step-by-step mass breakdown.