The half-life of Sr-83 is 32.4 hours. How many emissions are produced when 20 g of strontium-83 decays to 4.0 grams?
A) 3.39 × 1020 emissions
B) 1.81 × 1022 emissions
C) 2.90 × 1022 emissions
D) 1.16 × 1023 emissions
E) 1.45 × 1023 emissions
Correct Answer:
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