In a smaple of rock, the ration `.^(206)Pb` to `.^(238)U` nulei is found to be `0.5.` The age of the rock is (given half-life of `U^(238)` is `4.5 xx 10^(9)` years).

In a sample of rock, the ratio of number of ""^(206)Pb to ""^(238)U nuclei is found to be 0.5. The age of the rock is (18//n)xx10^(9)(ln((3)/(2)))/(ln2) year (Assume that all the Pb nuclides in he rock was produced due to the decay of Uranium nuclides and T_(1//2)(""^(238)U)=4.5 xx 10^(9) year). Find n.

In a sample of rock, the ratio of number of ""^(206)Pb to ""^(238)U nuclei is found to be 0.5. The age of the rock is (18//n)xx10^(9)(ln((3)/(2)))/(ln2) year (Assume that all the Pb nuclides in he rock was produced due to the decay of Uranium nuclides and T_(1//2)(""^(238)U)=4.5xx10^(9) year). Find n.

In an ofd rock, the mass ratio of ._(92)^(238)U to ._(82)^(206)Pb is formed to be 595:103. The age of the rock is (Mean life of ._(92)^(238)U is T_(0) ) :

In an old rock, the mass ratio of ""_(92)^(238)U to ""_(82)^(206)Pb is found to be 595:103 . The age of the rock is (Mean life of ""_(92)^(238)U is T_(0) ) :

A sample of uranium mineral was found to contain Pb^(208) and U^(238) in the ratio of 0.008 : 1. Estimate the age of the mineral (half life of U^(238) is 4.51 xx 10^(9) years).

A sample of uranium mineral was found to contain Pb^(208) and U^(238) in the ratio of 0.008 : 1. Estimate the age of the mineral (half life of U^(238) is 4.51 xx 10^(9) years).

The final product of U^(238) is Pb^(206) . A sample of pitchblende contains 0.0453 g of Pb^(206) for every gram of U^(238) present in it. Supposing that the mineral pitchblende formed at the time of formation of the earth did not contain any Pb^(206) , calculate the age of the earth (half-life period of U^(238) = 4.5 xx 10^(9) years).