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 is injected into the tail vein. Before injection the gamma rays were counted for this 0.10-mL solution, and the count rate was found to be 1.0 × 10⁴ 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 476 cpm. What is the approximate blood volume of the mouse? A) 0.48 mL B) 4.7 mL C) 21 mL D) 4.8 mL E) 2.1 mL

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The Answer of 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 is injected into the tail vein. Before injection the gamma rays were counted for this 0.10-mL solution, and the count rate was found to be 1.0 × 10⁴ 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 476 cpm. What is the approximate blood volume of the mouse? A) 0.48 mL B) 4.7 mL C) 21 mL D) 4.8 mL E) 2.1 mL

It Is Desired to Determine the Blood Volume of a Live