The mass of 1 curie of U-234 `(t_(1//2)=2*35 xx 10^(5) "years")` is

The mass of 1 curie of U-234 is :

The mass of one curie of U^(234) is

What is the mass of one curie of U^(234) ?

The atomic ratio between the uranium isotopes .^(238)U and.^(234)U in a mineral sample is found to be 1.8xx10^(4) . The half life of .^(234)U is T_((1)/(2))(234)=2.5xx10^(5) years. The half - life of .^(238)U is -

The atomic ratio between the uranium isotopes .^(238)U and.^(234)U in a mineral sample is found to be 1.8xx10^(4) . The half life of .^(234)U is T_((1)/(2))(234)=2.5xx10^(5) years. The half - life of .^(238)U is -

A sample of U^(238) (t_(1//2)= 4.5 xx 10^(9) yrs) is found to contains 23.8g U^(238) and 20.6g Pb^(206) , the age of ore is

Assuming that .^(226)Ra (t_(1//2) = 1.6 xx 10^(3) yrs) is in secular equilibrium with .^(238)U (t_(1//2) = 4.5 xx 10^(9) yrs) in a certain mineral how many grams of radium will present in for every gram of .^(238)U in the mineral?

A sample of rock from moon contains equal number of atoms of uranium and lead ( t_(1//2)" for "U=4.5xx10^(9) years). The age of the rock would be :

The half-life period of U^(234) is 2.5 xx 10^(5) years. In how much is the quantity of the isotope reduce to 25% of the original amount?