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10 The half life for the radioactive decay of rubidium-87 to strontium-87 is 4.88 x 10...
Using isotope ratios to radiodate Christ The haif life for the radioactive decay of rubidium-87 to strontium-87 is 4.88 x 100 years. Suppose nuclear chemical analysis shows that there is 0.586 mmol of strontium-87 for every 1.000 mmol of rubidium-87 in a certain sample of rock. Calculate the age of the rock. Round your answer to 2 significant digits years
The half life for the radioactive decay of potassium-40 to argon-40 is 1.26 × 109 years. Suppose nuclear chemical analysis shows that there is 0.444 mmol of argon-40 for every 1.000 mmol of potassium-40 in a certain sample of rock. Calculate the age of the rock. Round your answer to 2 significant digits 1.5×10 years
Rubidium-87 decays by ß production to strontium-87 with a half life of 4.7 x 1010 years. What is the age of a rock sample that contains 104.9 ug 7Rb and 4.3 ug 87Sr? years old Assume that no 87Sr was present when the rock was formed. The atomic masses are given in the table below: Nuclide Atomic Mass 87Rb 86.90919 87Sr 86.90888
Rubidium-87 decays by β production to strontium-87 with a half life of 4.7 × 1010 years. What is the age of a rock sample that contains 109.7 µg 87Rb and 4.0 µg 87Sr ? ___ years old Assume that no 87Sr was present when the rock was formed. Nuclide Atomic Mass 87Rb 86.90919 87Sr 86.90888
CHEMWORK Rubidium-87 decays by B production to strontium-87 with a half life of 4.7 x 1010 years. What is the age of a rock sample that contains 109.8 ug 87Rb and 4.8 ug 87 1Sr? years old Assume that no 875r was present when the rock was formed. The atomic masses are given in the table below: Nuclide Atomic Mass 87Rb 86.90919 8781 86.90888 Submit Show Hints
WILL RATE CORRECT ANSWERS CHEMWORK Rubidium-87 decays by B production to strontium-87 with a half life of 4.7 x 1010 years. What is the age of a rock sample that contains 109.4 ug 87Rb and 5.5 87Sr? ug years old Assume that no 87 Sr was present when the rock was formed. The atomic masses are given in the table below: Nuclide Atomic Mass 87 RB 86.90919 87$ 86.90888
A fossil was dated using rubidium-87, which undergoes beta decay and has a half-life of 4.75x1010 years. Calculate the age of the fossil if (5.7x10^1)% of rubidium-87 remains in the sample. Report your answer with 2 significant figures. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: X10 Answer units Question 2 (1 point) Thallium-201 is used to diagnose heart disease. The half-life of thallium-201 is 72.9 hours. If a patient takes 7.7 ug,...
Rubidium-Strontium dating decay and becomes A geologist finds an old rock and wants to determine its age using rubidium-strontium dating. This is possible because , which has a half life of 4.75X10" , undergous r. The geologia determines that the ratio of Sr to "bis 0.851. Assuming there was no se in the rock when it was formed, determine the age of the rock age of rock
(4 points) The half-life of radioactive strontium-90 is approximately 32 years. In 1964, radioactive strontium-90 was released into the atmosphere during testing of nuclear weapons, and was absorbed into people's bones. How many years does it take until only 9 percent of the original amount absorbed remains? time = 1 years
The half life for the decay of carbon-14 is 5.73 x 10 years. Suppose the activity due to the radioactive decay of the carbon-14 in a tiny sample of an artifact made of wood from an archeological dig is measured to be 19. Bq. The activity in a similar-sized sample of fresh wood is measured to be 20. Bq. Calculate the age of the artifact. Round your answer to 2 significant digits. years X 5 ?