29) a rock from the moon was found to contain 1.0 x 10* g (A,) of uranium-238 and 4.0 x 10“ g lead-206 (A). All of the lead-206 came from the decay of uranium-238. The half-life (tn) is 4.5 x10' years. How old is this rock? a) 1.0 x 10° years с) 6.0х 10° years b) 2.0 x 107 years d) 5.0 x 101° years

29) a rock from the moon was found to contain 1.0 x 10* g (A,) of uranium-238 and 4.0 x 10“ g lead-206 (A). All of the lead-206 came from the decay of uranium-238. The half-life (tn) is 4.5 x10' years. How old is this rock? a) 1.0 x 10° years с) 6.0х 10° years b) 2.0 x 107 years d) 5.0 x 101° years

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

49
a) Mrs. Price's son, Liam is currently working as a boilermaker at the Darlington Nuclear Power plant. He is working with Uranium-237 which has a half-life of 13.75 days. What mass of an initial sample of 567.5g of uranium-237 would remain after 56 days? b) Write the complete reaction for the decay of Po-210 if it undergoes 2 consecutive alpha decay followed by a beta decay followed by another alpha decay.
Iodine-131 is a radioactive isotope. After 5.00 days, 65.0% of a sample of 131 I remains. What is the half-life, t1/2, of 1311? t1/2 = R F G Search or type URL % 5 T G B MacBook Pro 6 Y H & V N U J * 00 M I K 9 V. O < O L command P option { [ ? 1
A radioactive isotope has an activity of 9.94×104 Bq initially. After 3.35 hours the activity is 5.96×104 Bq. What is the half-life of the isotope? What is the activity after an additional 3.35 hours?
An ancient skull has a carbon-14 decay rate of 0.85 disintegrations per minute per gram of carbon (0.85 dis / min · g C). How old is the skull? (Assume that living organisms have a carbon-14 decay rate of 15.3 dis / min · g C and that carbon-14 has a half-life of 5730 yr.)
Please send me the question in 20 minutes it's very urgent plz
A radioactive nuclide had an activity of 1.38 x 105 dpm 60 days ago, but now has an activity of 6.05 x 104 dpm. What is the half life?
A patient is given 0.050 mg of technetium-99m, a radioactive isotope with a half-life of about 6.0 hours. How long does it take for the radioactive isotope to decay to 1.0 * 10^-3 mg? (Assume the nuclide is not excreted from the body.)
32 32P is a radioactive isotope with a half-life of 14.3 days. If you currently have 91.3 g of ºP, how much "P was present 9.00 days ago? g
Am-241 is a radioactive isotope that decays by alpha emission. Each alpha particle emitted carries 8.79E-13 J of kinetic energy.A 80.0 kg worker is accidentally exposed to a sample of Am-241 having an activity of 0.0250 curies for a total of 10.00 minutes. During that time the workers body absorbs 2.50 percent of the alpha particles emitted by the sample.How many alpha particles were emitted by the sample during the time of the workers exposure? Answer: alpha particles emittedHow many joules of energy were absorbed by the worker? Answer: JoulesThe alpha particles emitted by the sample have an RBE=20. Calculate the workers exposure in millirems. Exposure = _____ millirems
Please Help with HW
A 16-g sample of a radioactive nuclide is taken from location A to B in 2 hours and it was found that 1 g of the nuclide remained (undisintegrated). What is the half-life of the radioactive nuclide?