It is desired to determine the blood volume of a live mouse. To do this, 0.10 mL

Question

It is desired to determine the blood volume of a live mouse. To do this, 0.10 mL of a saline suspension of red blood cells labeled with^59_26 Fe is injected into the tail vein. Before injection, the gamma rays were counted for this 0.10-mL solution and the count rate found to be 1.0 10^4 cpm. After a sufficient time for the blood to be thoroughly mixed, 0.10 mL of blood is removed and counted. The sample is found to have a count rate of 539 cpm. What is the approximate blood volume of the mouse? 0.54 mL 19 mL 5.4 mL 5.3 mL 1.9 mL ANS: E PTS: 1 DIF: Moderate REF: 19.4 KEY: Chemistry | general chemistry | nuclear chemistry | radioactive and nuclear bombardment reactions | rate of radioactive isotopes | chemical analysis MSC: Quantitative

Explanation / Answer

Volume = 0.10 x 1.0 x 104/ 539 = 1.855 mL

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.