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Mass spectrometry of elements

Chemistry • Atoms & Subatomic Particles • Original Scenario-Based • 1 questions

Mass spectrometry of elements Original Scenario-Based Download PDF

Chemistry · Atomic Structure · Chemistry · Atoms & Subatomic Particles

1 Chemistry practice questions on Mass spectrometry of elements. Questions built around original scenarios.

Questions

  1. 1.

    An autonomous exploration drone surveying the subsurface caverns of an icy exomoon vaporizes a newly discovered monoatomic element and injects it into an onboard mass spectrometer. The instrument generates singly charged positive ions and detects exactly two signals: a peak at a mass-to-charge ratio of 120 with an abundance of 75.0% and a peak at a mass-to-charge ratio of 124 with an abundance of 25.0%. Based on these mass spectrometry data, what is the relative atomic mass of the unknown element?

    • A) 122.0
    • B) 123.0
    • C) 120.5
    • D) 121.0