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What if there is an isotope of element z

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Reference no: EM132409967

Element Z has an atomic # of 45 and a mass of 170 (Z-170)

If element Z has a half-life of 4,200 years, how many years would it take to have 6.25% of remaining?

What if there is an isotope of element Z (Z-168) and has a half-life of 800 years. How many years would it take to have 25% remaining?

Reference no: EM132409967

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