What does 1/5 have to do with this equation?     You take three compounds, each consisting of two elements (X, Y, and/or Z), and decompose them to their respective ele- ments. To determine the relative masses of X, Y, and Z, you collect and weigh the elements, obtaining the following data:   What are the assumptions needed to solve this problem? b. What are the relative masses of X, Y, and Z? c. What are the chemical formulas of the three compounds? d. If you decompose 21 g of compound XY, how much of each element is present?

Q: determine the  abundance in nature of each isotope in percent.

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Q: The ratio of the mass of Oto the mass of Nin N2O3is 12:7. Another binary compound of nitrogen has a…

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Q: m/z values for a given elemental composition are calculated a. using the average atomic masses…

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Q: How many carbons, hydrogens, and oxygens does ribose have in its formula?

A: Ribose sugar  aldopentose sugar  and it is present in  RNA.  Ribose moecular formula = C5H10O5

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Q: The mass spectrum of a sample of an element is shown. 50 40 Relative abundance 30 40 50 60 70 20 30…

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Q: The molecular mass of a compound containing 75.0 % carbon, 10.5 % hydrogen, and 14.6 % nitrogen is…

A: given 75.0 %  C 10.5 %H  14.6 %N molecular mass 384.6.

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.