A compound is composedd of elemnt X and hydrogen. Analysis shows the compound to be 80% X by mass, with three times as many hydrogen atoms as X atoms per molecule. Which element is element X?  a) He b) C c) F d) S e) none of these I have no idea how to solve this and would like some assistance.

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Q: Question attached

A: When two atoms have same atomic number and different mass number, they are called as isotopes.

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A: Why do molecular, structural, and empirical formulas exist?

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A: The structural kind of chemical formula provides the most information.

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A: Dear student I have given answer to your question in the image format.

Q: Which one of the following molecular formulas is also an empirical formula?

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Q: If a compound is composed of 66.71% sulfur and 33.29% oxygen (by mass), the empirical formula of…

A: In empirical formula atoms of compounds are in the ratio of  simplest whole numbers .

Q: 2) Determine the mass of each sample: a) 1.32 mol carbon tetrafluoride b) 0.555 mol magnesium…

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A: Given = Mass of MgCl2 = 12.94 g

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Q: molar mass

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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.