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Chemistry, 19.09.2019 02:00 dounutalien

U-238 has a half-life of 4.6 billion years. how much u-238 was present initially if 2 grams remain after 13.4 billion years?

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U-238 has a half-life of 4.6 billion years. how much u-238 was present initially if 2 grams remain a...
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