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The accurate mass of the monoisotopic peak for a peptide was measured using MALDI to be 804.068 Da, while the exact mass for the peptide was calculated to be 804.073 Da. Determine the mass error in ppm and briefly explain the significance of the mass error in enabling a scientist to identify the peptide.

The accurate mass of the monoisotopic peak for a peptide was measured using MALDI to be 804.068 Da, while the exact mass for the peptide was calculated to be 804.073 Da. Determine the mass error in ppm and briefly explain the significance of the mass error in enabling a scientist to identify the peptide.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The accurate mass of the monoisotopic peak for a peptide was measured using MALDI to be 804.068 Da, while the exact mass for the peptide was calculated to be 804.073 Da. Determine the mass error in ppm and briefly explain the significance of the mass error in enabling a scientist to identify the peptide.
Transcribed Image Text:The accurate mass of the monoisotopic peak for a peptide was measured using MALDI to be 804.068 Da, while the exact mass for the peptide was calculated to be 804.073 Da. Determine the mass error in ppm and briefly explain the significance of the mass error in enabling a scientist to identify the peptide.
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