The following table shows the currently accepted half-life values for six parent isotopes. parent isotope currently accepted half-life values uranium-238 4.5 billion years uranium-235 704 million years thorium-232 14.0 billion years rubidium-87 48.8 billion years potassium-40 1.25 billion years samarium-147 106 billion years earth is approximately 4.5 billion years old. given this information and the data in the table, which of the following isotopes could today contain less than 50 percent of its parent isotope? potassium-40 rubidium-87 samarium-147 uranium-238
Answers: 3
Chemistry, 21.06.2019 15:00
1) how many electrons are in each energy level of the following elements? a. he b. na c. na d. ne 2) how many valence electrons are percent in the following atoms? a. s b. mg c. be d. cl 3) which of the following elements are stable as atoms? a. he b. o c. cl d. ar if you are able to provide the work as to how you got the answers that would be greatly appreciated. : )
Answers: 1
Chemistry, 21.06.2019 21:30
Balance this equation co2(g) + h2o (g) show that the balanced equation obeys the law if conversation of mass
Answers: 1
The following table shows the currently accepted half-life values for six parent isotopes. parent is...
Mathematics, 12.08.2020 08:01
English, 12.08.2020 08:01
Mathematics, 12.08.2020 08:01
Mathematics, 12.08.2020 08:01
Biology, 12.08.2020 08:01
Engineering, 12.08.2020 08:01
Mathematics, 12.08.2020 08:01
Computers and Technology, 12.08.2020 08:01
Mathematics, 12.08.2020 08:01
Mathematics, 12.08.2020 08:01
History, 12.08.2020 08:01