a .A radioisotope has a half-life of 37 days. Calculate how many days that isotope takes to reach 15% of its original ac
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a .A radioisotope has a half-life of 37 days. Calculate how many days that isotope takes to reach 15% of its original ac
a .A radioisotope has a half-life of 37 days. Calculate how many days that isotope takes to reach 15% of its original activity. Calculate the resulting Z and A when 4C emits an electron. You can use the symbol D for the resulting element symbol.