To a sample of a protein hydroysate, an analyst added 1.00 mg of tryptophan, which was labeled with 14C and exhibited a counting rate of 584 cpm above background. The labeled compound was thoroughly mixed with the sample and the mixture was passed through an ion-exchange column. The fraction effluent contaning only tryptophan was collected, and from it an 18.0 mg sample of pure tryptophan was isolated. The isolated sample had a counting rate of 204 cpm in the same counter. What was the weight of tryptophan in the original sample? A. 6.28 mg B. 20.8 mg C. 50.5 mg D. 58.4 mg Help me! Why is C correct. Please explain! Thank you.
To a sample of a protein hydroysate, an analyst added 1.00 mg of tryptophan, which was labeled with 14C and exhibited a counting rate of 584 cpm above background. The labeled compound was thoroughly mixed with the sample and the mixture was passed through an ion-exchange column. The fraction effluent contaning only tryptophan was collected, and from it an 18.0 mg sample of pure tryptophan was isolated. The isolated sample had a counting rate of 204 cpm in the same counter. What was the weight of tryptophan in the original sample? A. 6.28 mg B. 20.8 mg C. 50.5 mg D. 58.4 mg Help me! Why is C correct. Please explain! Thank you.
Chapter12: Spectrochemical Methods
Section: Chapter Questions
Problem 7P
Related questions
Question
Please answer all options is correct and incorrect, Don't use AI.
Transcribed Image Text:To a sample of a protein hydroysate, an analyst added 1.00 mg of tryptophan, which was labeled with 14C and exhibited
a counting rate of 584 cpm above background. The labeled compound was thoroughly mixed with the sample and the
mixture was passed through an ion-exchange column. The fraction effluent contaning only tryptophan was collected,
and from it an 18.0 mg sample of pure tryptophan was isolated. The isolated sample had a counting rate of 204 cpm in
the same counter. What was the weight of tryptophan in the original sample?
A. 6.28 mg
B. 20.8 mg
C. 50.5 mg
D. 58.4 mg
Help me! Why is C correct. Please explain! Thank you.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps
Recommended textbooks for you
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning