contestada

Assuming a parent isotope with a half-life equal to 4.5 billion years, what percentage
of the original parent remians after 6.75 billion years have passed?

Respuesta :

Answer:

35.4 % left

Explanation:

6.75  / 4.5   = 1.5  half lives

1/2 ^(1.5) = .354      or   35 .4 %

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