1. After 3 half-lives, how much of a 400 gram sample of radioactive uranium-238 remains? The half-life of
U-238 is 4.47 years.

In the blue area, people live closely because of its 1.Indutrialised area 2. The land is costly. 3.urbanisation In lighter color areas its farther because 1.Village 2.Farming area 3.Less popular rural area

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In the blue area, people live closely because of its 1.Indutrialised area 2. The land is costly. 3.urbanisation In lighter color areas its farther because 1.Village 2.Farming area 3.Less popular rural area ΔΔΔΔΔβαααααααααααααααααααωωωωωωωωωωωω㏒㏒㏒

1. After 3 half-lives, how much of a 400 gram sample of radioactive uranium-238 remains? The half-life of U-238 is 4.47 years.

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1. After 3 half-lives, how much of a 400 gram sample of radioactive uranium-238 remains? The half-life of
U-238 is 4.47 years.