Question

A scientist is studying a radioactive element that has a half-life of 63 years. Choose the correct answers from the drop-down menus to complete each statement about the element.
It will take
blank
years for half of the sample to decay.

In 189 years, blank
of the sample will be left.

Scientists can figure out how old a sample is by multiplying the blank
by the length of the half-life.

Answer 1

Answer:

It will take 63 years

In 189 years, one-eight of the sample will be left

By multiplying the number of half-life cycles

Explanation:

Answer 2

Answer:

It will take 63 years

In 189 years, one-eight of the sample will be left

By multiplying the number of half-life cycles

Explanation:

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