Question

How much of a radioactive kind of niobium will be left after 105 days if you start with 3,920 grams and the half-life is 35 days?

Answer 1

"490 grams" would be the correct solution.

Explanation:

The given values are:

Half time,

T = 35 days

Total time,

t = 105 days

As we know,

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On substituting the values, we get

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