Chemistry, 18.08.2019 11:30 angellinelittle
The half-life of thorium-227 is 18.72 days. how many days are required for three-fourths of a given amount to decay?
i'm not quite sure how to set it up to even start working it? would be appreciated!
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The half-life of thorium-227 is 18.72 days. how many days are required for three-fourths of a given...
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