Bananas are rich in potassium and contain the naturally occurring potassium-40 radioisotope. Potassium-40 is a significa

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Bananas are rich in potassium and contain the naturally occurring potassium-40 radioisotope. Potassium-40 is a significa

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Bananas Are Rich In Potassium And Contain The Naturally Occurring Potassium 40 Radioisotope Potassium 40 Is A Significa 1
Bananas Are Rich In Potassium And Contain The Naturally Occurring Potassium 40 Radioisotope Potassium 40 Is A Significa 1 (38.69 KiB) Viewed 38 times
Bananas are rich in potassium and contain the naturally occurring potassium-40 radioisotope. Potassium-40 is a significant source of radioactivity in the human body and the activity of a human body due to potassium-40 is approximately 5400 Bq. Potassium-40 has a half-life of 1.25 x 10⁹ years and it is a beta-emitter. (i) Write the decay equation, including the atomic number and mass for each element when potassium-40 undergoes a beta emission. (3 marks) (6 marks) (ii) Calculate the number of potassium-40 nuclei in a person with an activity of 5400Bq.
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