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Mass spectroscopic problem for Cl2+ ions

1. If 35Cl and 37Cl are the stable isotopes of chlorine and they have masses of 34.968852 amu and 36.965903 amu as well as abundances of 75.77% and 24.23%, respectively, what is the tabulated atomic mass of chlorine?
2. How many parent ion peaks do you expect in the mass spectrum of the Cl2+ ion?
3. What is the mass of the most abundant ion from question 2?
4. Use the binomial formula to predict the relative intensity of the peak described in question 3.

Please see the attached file for complete problem.

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