Two isotopes of radioactive Radon gas -R...

Two isotopes of radioactive Radon gas `-R_(n)^(222)` and `R_(n)^(220)` are mixed in atomic ratio 1000:1 and kept in a `831cm^(3)` container at `10^(5) N//m^(2)` pressure and `27^(@)C` temperature the two isotopes have half life of 4 days and 1 minute respectively. Calculate the activity of Radon gas sample in unit of curie.

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The correct Answer is:

`7.3xx10^(6)Ci`

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