{"success":true,"version":"v1","request":{"tool":"list_calculators","category":"chemistry"},"result":{"entity_type":"calculator_list","status":"completed","count":10,"calculators":[{"calculator_id":"molar-mass","entity_type":"calculator","name":"Molar Mass Calculator","category":"chemistry","tool_name":"calculate_molar_mass","description":"Parses a chemical formula (including brackets, nested groups and hydrates) and sums IUPAC 2021 standard atomic weights to give the molar mass in g/mol, plus the atom count and mass-percent composition of each element.","use_when":"You have a chemical formula and need its molar mass (molecular weight), the number of atoms of each element, or its elemental mass-percent composition.","do_not_use_when":"You already know the molar mass and want to convert between grams and moles (use moles-mass) or need a solution concentration (use molarity).","required_inputs":["formula"],"optional_inputs":[],"urls":{"html":"https://tttkmbb.com/chemistry/molar-mass","markdown":"https://tttkmbb.com/chemistry/molar-mass.md","schema":"https://tttkmbb.com/api/v1/calculators/molar-mass","api":"https://tttkmbb.com/api/v1/calculate/molar-mass"}},{"calculator_id":"moles-mass","entity_type":"calculator","name":"Moles to Grams Calculator","category":"chemistry","tool_name":"convert_moles_and_mass","description":"Converts between mass in grams and amount in moles using the molar mass (from a formula or given directly), and reports the number of molecules or formula units from the Avogadro constant. 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