8.1 Why do TQSTSC and TQSTPC always return a molar mass of 1.0?

Both TQSTSC (Get – Stoichiometry – System – Component) and TQSTPC (Get – Stoichiometry – Phase – Constituent) return a molecular mass via the parameter WMASS. If you did not change the mass unit using TQCSU (Change – System – Unit), it remains set to the default unit, which is ‘mol’. The molecular mass is expressed in units of [current amount unit / mol] which can of course only result in the value of 1.0, if the current amount unit is ‘mol’. Thus you would normally want to change the amount unit to ‘gram’, before a call to the functions TQSTSC and TQSTPC.