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Unformatted text preview: Why? c. In a mass spectrometer, the ratio of an unknown isotope of an element, Z, to 31 15 P (mass = 30.973761) was 1.2579585. What are the atomic mass and the elemental symbol of Z? d. The compound PCl 3 is a common starting material for the synthesis of various phosphorus-containing compounds, including many used in insecticides. Phosphorus is 100% 31 15 P (30.973761). Using a mass number of 31 for P, and mass numbers (%s) 35 (76%) and 37 (24%) for 35 17 Cl and 37 17 Cl, respectively, predict what the mass spectrum of PCl 3 would look like by giving the % abundances and masses of all molecular ions....
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- Spring '07