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One of the many isotopes used in cancer treatment is 19879Au79198Au, with a half-life of 2.70 d. Determine the mass of this isotope that is required to give an activity of 195 Ci.

Question

One of the many isotopes used in cancer treatment is 19879Au79198Au, with a half-life of 2.70 d. Determine the mass of this isotope that is required to give an activity of 195 Ci.

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Step 1

The expression for the number of radioactive nuclei,

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Step 2

Substitute the values,

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Step 3

The expression for the ma...

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Physics of Atoms

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