A nucleus of `Ux_1` has a half life of 24.1 days. How long a sample of `Ux_1` will take to change to 90% of `Ux_1`.

A nucleus of Ux_1 has a half life of 24.1 days. How long a sample of Ux_1 will take to change to 90% of Ux_2 .

A nucleus of Ux_(1) has a life of 24.1 days. How long a sample of Ux_(2) will take to change to 90 % of it to Ux_(2) ?

A nucleus of UX_(1) has a half-life of 24.1 days. How long a sample of UX_(1) will take to change 90% of it to UX_(2) ?

A nucleus of UX_1 has a half - life of 24.1 days.How long a sample UX_1 will take to change 90% of it to UX_2 ?

A nucleus X_1 has a half life of 24 days How long of sample of X_1 will take to change 80% of its to X_2 ?

A radioactive isotope has a half life of T years. How long will it take the activity to reduce to 3.125% .

A radioactive isotope has a half life of 5 yrs. How long will it take the activity to reduce to 3.125% ?

Xenon-127 has a half life of 36.4 days. How much of a sample of xenon that orginally weighed 1.0g remains after 20 days?

A radio active isotope has a half-life of T years. How long will it take the activity to reduce to 3.125%