What mass of `Ra^(226)` whose `t_(1//2) = 1620` years will give the activity of 1 millicurie?

What mass of C^(14) with t_(1//2) = 5730 years has activity equal to curie?

What mass of C^(14) with t_(1//2) = 5730 years has activity equal to curie?

What mass fo C^(14) with t_(1//2) = 5730 year has activity equal to one curie?

The half-life of Radium-226 is 1600 years. What will be the activity of a sample containing 1 mg of this element. Given, Avogadro number = 6.023xx10^23.mol^(-1) .

The atomic mass number of Radium is A=226 , its half life is 1622 years. What is the activity of 1g Radium ?

The atomic mass number of Radium is A=226 , its half life is 1622 years. What is the activity of 1g Radium ?

The decay constant of Ra^(226) is 1.37xx10^(-11)s^(-1) . A sample of Ra^(226) having an activity of 1.5 millicurie will contain