What mass of sulphur dioxide is produced from burning 16 tonnes of sulphur?

Umm... if ALL of it is burned: The mass of one mol of sulphur is 32.1 gramms, the mass of one mol of oxigen is 16 gramms. The created molecule has a mass of 64 gramms per mol, which is twice the mol mass of sulphur. You just multiply the original mass by 2 and get: 32 tonnes.