The isotope has a half-life of 5,715 years. After 20,000 years, a sample of the isotope is reduced 0.1 grams. What was the initial size of the sample (in grams)? How large was the sample after the first 2,000 years? Round your answers to four decimal places.
A)0.6786, 0.5324
B)0.5655, 0.4437
C)0.9048, 0.7099
D)1.4703, 1.1536
E)1.1310, 0.8874

Question

The isotope  has a half-life of 5,715 years. After 20,000 years, a sample of the isotope is reduced 0.1 grams. What was the initial size of the sample (in grams)? How large was the sample after the first 2,000 years? Round your answers to four decimal places.
A)0.6786, 0.5324 
B)0.5655, 0.4437 
C)0.9048, 0.7099 
D)1.4703, 1.1536 
E)1.1310, 0.8874

Quizplus · Accepted Answer

The Answer of The isotope  has a half-life of 5,715 years. After 20,000 years, a sample of the isotope is reduced 0.1 grams. What was the initial size of the sample (in grams)? How large was the sample after the first 2,000 years? Round your answers to four decimal places.
A)0.6786, 0.5324 
B)0.5655, 0.4437 
C)0.9048, 0.7099 
D)1.4703, 1.1536 
E)1.1310, 0.8874

The Isotope Has a Half-Life of 5,715 Years