Sodium-24, which is used to locate blood clots in the human circulatory system, has a half-life...

Question

Question

Sodium-24, which is used to locate blood clots in the human circulatory system, has a half-life of 15.0h. A sample of sodium-

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

Find the decay constant using the half-life. Use that to find the required mass of sodium left as shown below a = = ln2 th/z ln2 15h = 0.0462 h1 N= No e at 3N = (30g)e-2(601) = 1.875),

***********************************************************************************************
This concludes the answers. If there is any mistake or omission, let me know immediately and I will fix it....

Add a comment

Answer 2

Similar Homework Help Questions

Sodium-24, which is used to locate blood clots in the human circulatory system, has a half-life...

Sodium-24, which is used to locate blood clots in the human circulatory system, has a half-life of 15.0 hours. A sample of sodium-24 with an initial mass of 28.5 g was stored for 45.0 hours. How many grams of sodium-24 is left in the sample after 45.0 hours?
Sodium-24 is used to study blood circulation and has a half-life of 15 hours. Which one...

Sodium-24 is used to study blood circulation and has a half-life of 15 hours. Which one of the following statements is true? a. It is not possible to know exactly how much remains after 45 hours because the rate of decay depends on the initial amount. b. After 45 hours have elapsed, all of the nuclide will have decayed. c. After 45 hours have elapsed, 1/8 of the original amount remains d. After 45 hours have elapsed, 1/4 of the...
Sodium-24 is used to study blood circulation and has a half-life of 15 hours. Which one...

Sodium-24 is used to study blood circulation and has a half-life of 15 hours. Which one of the following statements is true? After 45 hours have elapsed, 1/8 of the original amount remains a. After 45 hours have elapsed, 1/4 of the original amount remains. Ob. It is not possible to know exactly how much remains after 45 hours because the rate of decay depends on the initial amount. Oc. After 45 hours have elapsed, all of the nuclide will...

23-29 23. has an open circulatory system. A. Frog B. Chicken C. Fly D. Human 24....

23-29 23. has an open circulatory system. A. Frog B. Chicken C. Fly D. Human 24. Which statement is wrong in regards to the comparison between the closed and open circulatory system? A. Closed circulatory system is more energy-consuming. B. Closed circulatory system has blood pressure C. Closed circulatory system can regulate the blood flow to certain organ. D. Closed circulatory system can quickly dissipate body heat. 25. The heart chamber that receives blood is called A. Ventricle B. Atrium...
The radioisotope sodium-24, half-life 15 h, is used to measure the flow rate of salt water...

The radioisotope sodium-24, half-life 15 h, is used to measure the flow rate of salt water by irradiation of stable ?? with neutrons, suppose that we produce 5 micrograms of the isotope. How long after a sample is placed in a reactor is it before the sample activity reaches 75% of the maximum activity? Assume the production of a single reactive species at a constant rate R sec-1, the decay rate λ, and there is no initial activity in the...
An isotope of sodium, 24Na, has a half-life of 15 hours. A sample of this isotope...

An isotope of sodium, 24Na, has a half-life of 15 hours. A sample of this isotope has mass 9 g. (a) Find the amount remaining after 60 hours. 0.888 X 9 (b) Find the amount remaining after thours. y = (c) Estimate the amount remaining after 4 days. (Round your answer to three decimal places.) 9 (d) Use a graph to estimate the time required for the mass to be reduced to 0.01 g. (Round your answer to one decimal...

Q. 86 and 87 i. E) 1.8 x 104 mCi 86) Sodium-24 has a half-life of...

Q. 86 and 87 i. E) 1.8 x 104 mCi 86) Sodium-24 has a half-life of 15 hours. How many hours is three half-lives? A) 60 hours B) 45 hours C) 30 hours D) 15 hours E) 7.5 hours 87) Iodine 131 has a half-life of 8.0 days. An I-131 sample has an initial activity of 32 m What is the activity after 24 days? A) 96 mCi B) 16. mCi C) 8.0 mCi D) 4.0 mCi E) 2.0 mCi
Radium-226. a radium isotope, has a half-life (the time it takes half of the isotope to...

Radium-226. a radium isotope, has a half-life (the time it takes half of the isotope to decay) of about 1620 years. A sample of radium-226 has a mass of 30 grams. Which of the following equations expresses the number of grams, g, of this sample that will be left after tyears? OA 1620 9= 30 -15.00 OB oc 9 = 30 - 157620 OD 9=301620
The half-life for the radioactive decay of iron-55 is 2.7 years. From a 2.00 g sample...

The half-life for the radioactive decay of iron-55 is 2.7 years. From a 2.00 g sample of iron – 55, how many grams will be left after 13.5 years?

Cesium- 137, a beta emitter, has a half-life of 30y. - How many grams of a...

Cesium- 137, a beta emitter, has a half-life of 30y. - How many grams of a 16g sample of Cesium- 137 would remain after 90y. - How many years will be needed for a 28g of Cesium- 137 to devay to 3.5 g of Cesium- 137.

Sodium-24, which is used to locate blood clots in the human circulatory system, has a half-life...

Homework Answers