A 0.20-mL sample of a solution containing H that produces 3.7 $\times$ 10³ cps is injected into the bloodstream of an animal.After allowing circulatory equilibrium to be established,a 0.20-mL sample of blood is found to have an activity of 37 cps.Calculate the blood volume of the animal. A)0.50 L B)20 mL C)10 mL D)100 mL E)none of these

Question

Quizplus · Accepted Answer

To solve this problem, we can use the formula:

original activity * original volume = final activity * final volume

Plugging in the given values, we get:

3.7 × 10^10 cps * 0.0002 L = 37 cps * final volume

Solving for final volume, we get:

final volume = (3.7 × 10^10 cps * 0.0002 L)/37 cps = 0.02 L

Therefore, the blood volume of the animal is 20 mL, which is answer choice B.

A 020-ML Sample of a Solution Containing H That Produces