A 15.12 gram sample of iron is heated in the presence of excess sulfur. A metal sulfide is formed with a mass of 28.15g. Determine the empirical formula of the metal sulfide. Enter the elements in the order Fe,S empirical formula= ?  B) the References to access important values if needed for this question. A 22.60 gram sample of copper is heated in the presence of excess fluorine. A metal fluoride is formed with a mass of29.35 g. Determine the empirical formula of the metal fluoride. Enter the elements in the order Cu,F empirical formula= ?

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Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.