Chemistry Calculators
chemistry-calc.x402tookit.com · 11 paid endpoints · listed 2026-11-02
pH and pOH for a strong or weak acid or base, a hydrogen-ion concentration, or a buffer (Henderson-Hasselbalch).
Paid endpoints
| Method | Endpoint | Price | Networks |
|---|---|---|---|
| GET | chemistry-calc.x402tookit.com/bond-polarity Bond type between two elements from the Pauling electronegativity difference: nonpolar covalent, polar covalent or ionic. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | chemistry-calc.x402tookit.com/dilution Dilution equation C1 x V1 = C2 x V2: give any three values and get the fourth, plus solvent to add and the dilution factor. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | chemistry-calc.x402tookit.com/element-lookup Periodic table lookup by symbol, name or atomic number: weight, configuration, electronegativity, melting and boiling points. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | chemistry-calc.x402tookit.com/empirical-formula Empirical formula from percent or gram composition by element, and the molecular formula if you give the molar mass. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | chemistry-calc.x402tookit.com/half-life Radioactive decay: remaining fraction after a time, time to reach a fraction (carbon dating), decay constant and mean life. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | chemistry-calc.x402tookit.com/ideal-gas Ideal gas law PV = nRT: give any three of pressure, volume, moles and temperature and solve the fourth, in common units. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | chemistry-calc.x402tookit.com/limiting-reagent Limiting reagent, theoretical yield and leftover excess for a balanced reaction from reactant masses; optional percent yield. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | chemistry-calc.x402tookit.com/molar-mass Molar mass and percent composition by element for a formula, including brackets and hydrates such as CuSO4.5H2O. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | chemistry-calc.x402tookit.com/molarity Molarity of a solution from solute grams and volume, or the grams of solute needed to make a target molarity and volume. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | chemistry-calc.x402tookit.com/mole-convert Convert between grams, moles and molecule counts for a chemical formula using Avogadro's number. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | chemistry-calc.x402tookit.com/ph-calc pH and pOH for a strong or weak acid or base, a hydrogen-ion concentration, or a buffer (Henderson-Hasselbalch). | $0.02 | Polygon, Arbitrum, Base, Solana |
Latest checks
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|---|---|---|---|---|
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