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A 1.2 kg sample of Th-228 has a half-life of 1.9 years. How many grams of Th is left after 13.3 years?
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A 1.2 kg sample of Th-228 has a half-life of 1.9 years. How many grams of Th is left after 13.3 years?

User Lev Kazakov
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1 Answer

2 votes
.009375 kg or 9.375 grams will remain
User Andrei Sinitson
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