(Answered) Question an isotope of sodium 24na has a half-life of 15

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Question: An isotope of sodium, ²⁴Na , has a half-life of 15 hours. A sample of this isotope has mass 2 g.

(a) Find the amount remaining after 60 hours.

(b) Find the amount remaining after t hours.

(d) Use a graph to estimate the time required for the mass to be reduced to 0.01 g.

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