The table below shows the radioactive decay for a sample of iodine -131.Study it and answer the questions that follow.

      

The table below shows the radioactive decay for a sample of iodine -131.Study it and answer the questions that follow.

Q316820191153.png

(i) Plot the decay curve of iodine -131 using the data given in the table above.

(ii) Use the graph to determine the half-life of the sample.

(iii) What fraction of the original sample remains after 18 days?

  

Answers


Maurice
(i) Q316820191158.png


(ii) 8 d

(iii) Q316820191206.png
maurice.mutuku answered the question on August 16, 2019 at 09:08


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