Question

If uranium-238 has half life 12.5% then after three half lives how much amount of uranium-238 remains​

Answer 1

Explanation:

For geological dating, the decay of U-238 can be used. The half-life of U-238 is 4.5×109 years. The end product of the decay of U-238 is Pb-206. After one half-life, a 1.00 gram sample of uranium will have decayed to 0.50 grams of U-238 and 0.43 grams of Pb-206.2