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Part A Neutron activation analysis for a sample of a rock revealed the presence of 51 Cr ,which has a half-life of 27.8 days. Assuming the isotope was freshly separated from its decay products, what is the mass of 51 Cr in a sample emitting 1.00 mCi of radiation? Express your answer in grams to three significant figures. mass of the isotope, m₁ = IT ΑΣΦ www. ? g

Part A Neutron activation analysis for a sample of a rock revealed the presence of 51 Cr ,which has a half-life of 27.8 days. Assuming the isotope was freshly separated from its decay products, what is the mass of 51 Cr in a sample emitting 1.00 mCi of radiation? Express your answer in grams to three significant figures. mass of the isotope, m₁ = IT ΑΣΦ www. ? g

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
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Applications of Radioactive Isotopes
Part A Neutron activation analysis for a sample of a rock revealed the presence of 51 Cr ,which has a half-life of 27.8 days. Assuming the isotope was freshly separated from its decay products, what is the mass of 51 Cr in a sample emitting 1.00 mCi of radiation? Express your answer in grams to three significant figures. mass of the isotope, m₁ = Submit Π| ΑΣΦ Hints My Answers Give Up Review Part ? g
Transcribed Image Text:Part A Neutron activation analysis for a sample of a rock revealed the presence of 51 Cr ,which has a half-life of 27.8 days. Assuming the isotope was freshly separated from its decay products, what is the mass of 51 Cr in a sample emitting 1.00 mCi of radiation? Express your answer in grams to three significant figures. mass of the isotope, m₁ = Submit Π| ΑΣΦ Hints My Answers Give Up Review Part ? g
Part B BNCT relies on the initial targeting of tumor cells by an appropriate chemical compound tagged with B , which preferentially concentrates in tumor cells. During the irradiation of the tumor site by neutrons ( n) the ¹B absorbs a low-energy neutron (n), and it ejects an energetic short-range alpha particle (a or He) and lithium ion along with gamma radiation (y). This radiation deposits most of its energy within the cell containing the original ¹0B atom. Therefore, if a higher concentration of ¹B exists in tumor cells relative to other normal tissues, a concomitantly higher dose will be delivered to the tumor cells during neutron irradiation. What is the nuclear reaction that takes place in the tumor cell? Express your answer as a nuclear equation. ΑΣΦ ¹0B, + 'n →Li, +¹α₂ www. ? Submit Hints My Answers Give Up Review Part Incorrect; Try Again; 6 attempts remaining
Transcribed Image Text:Part B BNCT relies on the initial targeting of tumor cells by an appropriate chemical compound tagged with B , which preferentially concentrates in tumor cells. During the irradiation of the tumor site by neutrons ( n) the ¹B absorbs a low-energy neutron (n), and it ejects an energetic short-range alpha particle (a or He) and lithium ion along with gamma radiation (y). This radiation deposits most of its energy within the cell containing the original ¹0B atom. Therefore, if a higher concentration of ¹B exists in tumor cells relative to other normal tissues, a concomitantly higher dose will be delivered to the tumor cells during neutron irradiation. What is the nuclear reaction that takes place in the tumor cell? Express your answer as a nuclear equation. ΑΣΦ ¹0B, + 'n →Li, +¹α₂ www. ? Submit Hints My Answers Give Up Review Part Incorrect; Try Again; 6 attempts remaining
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