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How long will it take until only 25 percent of the strontium-90 remains?
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∙ 7y ago
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Laverna Schroeder
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An area is contaminated with an element which has a half-life of 50 years How long does it take until only 1 percent of the element remains?
It would take about 345 years for only 1 percent of the element to remain. This can be calculated by using the formula: t = (ln(1/0.01) * half-life), where ln is the natural logarithm.
What are remains of organisms from long ago?
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What are the fosslis?
The remains of an animal. -------------------------- Fossils are the remains of a dead plant or animal that have been preserved for a long time.
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When 40 percent effaced how long until labor begins?
Well if you're 40% effaced then labour has already begun!! Well if you're 40% effaced then labour has already begun!!
