The Rb-87/Sr-87 method of dating rocks is often used by geologists: 
t1/2 = 6.0 × 1010 yr Estimate the age of a rock sample in which the present-day mole ratio of Rb-87 to Sr-87 is 36:1.
A) 2.4 × 109 yr
B) 1.7 × 109 yr
C) 3.1 × 1011 yr
D) 4.1 × 10-11 yr
E) 3.6 × 1011 yr
Correct Answer:
Verified
Q33: What fraction of radioactive atoms remains in
Q45: Cobalt-60 is a beta emitter with a
Q47: The radioisotope potassium-40 decays to argon-40 by
Q48: Charcoal found under a stone at Stonehenge,
Q49: Determine how much energy is released when
Q50: What would the atom ratio of 206Pb
Q53: Estimate the age of a bottled wine
Q54: Cobalt-60 is a beta emitter with a
Q58: If 12% of a certain radioisotope decays
Q60: Polonium-208 is an alpha emitter with a
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents