stion Completion Status: Relative Abundance 100 90 80 70 60 50 40 30 20 10 0 21 Mass (amu) Consider the mass spectrum of neon above. It consists of an intense signal at mass number 20, an itty-bitty signal at 21, and a moderate signal at mass number 22. The heights of these signals are proportional to the number of counts at each mass number and, in tum, a reflection of the fractional abundance of the isotopes. The fractional abundance of each isotope is determined as follows: 20 22 1. The heights of all signals are measured with a metric ruler (in cm). 2. These heights are added together to give a total value. 3. The fractional abundance of an isotope is equal to the height of its signal divided by the sum of the heights of all the signals. Which of the following best represents the height measurements for each isqope? (scaling so the mass spectrum box is about 10 cm tall before measuring with a metric ruler) O 20 Ne 9.25 cm, 21 Ne 0.02 om, 22Ne 1.00 cm O 20 Ne 9 cm, 21 Ne 0.02 cm, 22Ne 1 cm O20Ne 3.5 cm, 21 Ne 0.01 cm, 22Ne 0.4 cm 20 Ne 91 cm, 21Ne 0.1 cm, 22Ne 10 cm

stion Completion Status: Relative Abundance 100 90 80 70 60 50 40 30 20 10 0 21 Mass (amu) Consider the mass spectrum of neon above. It consists of an intense signal at mass number 20, an itty-bitty signal at 21, and a moderate signal at mass number 22. The heights of these signals are proportional to the number of counts at each mass number and, in tum, a reflection of the fractional abundance of the isotopes. The fractional abundance of each isotope is determined as follows: 20 22 1. The heights of all signals are measured with a metric ruler (in cm). 2. These heights are added together to give a total value. 3. The fractional abundance of an isotope is equal to the height of its signal divided by the sum of the heights of all the signals. Which of the following best represents the height measurements for each isqope? (scaling so the mass spectrum box is about 10 cm tall before measuring with a metric ruler) O 20 Ne 9.25 cm, 21 Ne 0.02 om, 22Ne 1.00 cm O 20 Ne 9 cm, 21 Ne 0.02 cm, 22Ne 1 cm O20Ne 3.5 cm, 21 Ne 0.01 cm, 22Ne 0.4 cm 20 Ne 91 cm, 21Ne 0.1 cm, 22Ne 10 cm

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter29: Mass Spectrometry

Section: Chapter Questions

Problem 29.12QAP

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