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A new element has a half-life of 30 minutes

/in /by

A new element has a half-life of 30 minutes, that is, if x oz. of the element exist at a given
time, x/2 oz exist 30 minutes later. The other half decays into another element. Suppose that 1 g of the element is present 2 hours after the start of an experiment.

1. Find a formula showing the amount of the element present t hours after the start of the of

the experiment.

2. How much of the element was present 1 hour after the start of the experiment?

 
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