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How much of a radioactive kind of bismuth will be left after 80 minutes if you start with 480

grams and the half-life is 20 minutes?

User PraveenP
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Actually Welcome to the concept of Radioactive decay.

So the left would be 30 grams.

How much of a radioactive kind of bismuth will be left after 80 minutes if you start-example-1
User Nikoloza
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