Chemistry

active

Periodic-table lookup and molar-mass computation — look up any of the 118 elements by symbol, name or atomic number, search the table, and compute the molar mass and composition of a chemical formula.

UtilityBasex402 v2exactchem.openverbs.com ↗︎
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Endpoints (3 live)

  • POST /v1/search — Search the periodic table by name or symbol substring. Exact matches rank first, then prefix matches, then substring matches. Returns up to `limit` elements (default 20) plus the total match count. (0.004 USDC on Base)
  • POST /v1/molar-mass — Compute the molar mass (g/mol) of a chemical formula. Supports nested parentheses and brackets, element multipliers, and hydrate dot notation with coefficients (e.g. "Ca(OH)2", "CuSO4·5H2O", "K4[Fe(CN)6]"). Returns the total mass and the per-element composition with mass fraction percentages. (0.004 USDC on Base)
  • POST /v1/element — Look up a periodic-table element by exactly one of `symbol` (e.g. "Fe"), `name` (e.g. "iron") or atomic `number` (1..118). Returns its number, symbol, name, standard atomic weight and whether that weight is a true standard atomic weight. (0.004 USDC on Base)

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