Question
The half-life of a certain isotope is 2 years. A sample of $3200 \mathrm{~kg}$ of the isotope is considered. If $\mathrm{x} \mathrm{kg}$ of the sample remains after 12 years $\mathrm{x}$ equals(a) $275 \mathrm{~kg}$(b) $100 \mathrm{~kg}$(c) $50 \mathrm{~kg}$(d) 0
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In this case, $X = 12$ years. Show more…
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