---
title: "A purified sample of zirconium is analyzed using a mass spectrometer, producing the mass spectrum shown above. Based on the mass spectrum, which of the following is closest to the average atomic mass of the zirconium sample?"
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url: "https://nerd-notes.com/ubq/119635/"
date_modified: "2026-08-21T08:11:53+00:00"
---

# A purified sample of zirconium is analyzed using a mass spectrometer, producing the mass spectrum shown above. Based on the mass spectrum, which of the following is closest to the average atomic mass of the zirconium sample?

A purified sample of zirconium is analyzed using a mass spectrometer, producing the mass spectrum shown above. Based on the mass spectrum, which of the following is closest to the average atomic mass of the zirconium sample?

![A grayscale mass spectrum graph with a horizontal axis labeled 'Mass-to-charge ratio (m/z)' with tick marks and numerical labels at integers from 88 to 98, and a vertical axis labeled 'Relative abundance (%)' with tick marks at 0, 20, 40, 60, 80, and 100. Five vertical solid black bars appear at distinct integer m/z values with no gridlines. The first bar at m/z = 90 extends to a height of 51.5%. The second bar at m/z = 91 extends to a height of 11.2%. The third bar at m/z = 92 extends to a height of 17.1%. The fourth bar at m/z = 94 extends to a height of 17.4%. The fifth bar at m/z = 96 extends to a height of 2.8%. No other peaks, curves, labels, or annotations appear.](https://nerd-notes.com/wp-content/uploads/ubq-frq-generated/stem-fig-1-1787299912-qe6lju.jpg)

- **A.** \(90.0 \text{ amu}\)
- **B.** \(91.2 \text{ amu}\)
- **C.** \(92.6 \text{ amu}\)
- **D.** \(93.0 \text{ amu}\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/119635/*