Rubidium-87 decays by β production to strontium-87 with a half life of 4.7 × 1010 years....
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 |
Homework Answers
Comment
in case of any doubt.
Add Answer to:
Rubidium-87 decays by β production to strontium-87 with a half
life of 4.7 × 1010 years....
Rubidium-87 decays by ß production to strontium-87 with a half life of 4.7 x 1010 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
CHEMWORK Rubidium-87 decays by B production to strontium-87 with a half life of 4.7 x 1010...
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...
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
1010 years. What is the age of a rock sample that contains 1042 ug Rubidum 87...
1010 years. What is the age of a rock sample that contains 1042 ug Rubidum 87 decays by β production to strontium-87 with a half life of 4.7 87Rb and 4.3 μg 87Sr ? years old Assume that no 87Sr was present when the rock was fomed The atomic masses are given in the table below: Nuclide Atomic Mass 87Rb 86.90919 87Sr 86.90888
The 87Rb rubidium isotope is used to determine the age of rocks and fossils. 87Rb is...
The 87Rb rubidium isotope is used to determine the age of rocks and fossils. 87Rb is β-active with a half-life of 4.9 to 1010 years and is degraded to strontium isotope 87Sr. The fossil under study contains strontium in the ratio k = NSr / NRb = 0.0055. Calculate the age of the fossil by assuming that strontium was not present when the fossil was petrified. Give the answer in years (ie a).
10 The half life for the radioactive decay of rubidium-87 to strontium-87 is 4.88 x 10...
10 The half life for the radioactive decay of rubidium-87 to strontium-87 is 4.88 x 10 years. Suppose nuclear chemical analysis shows that there is 0.271 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. Ar years x10
11. My Notes Ask Your Teacher -/10 points Content Carbon dating An archaeologist finds some ancient...
11. My Notes Ask Your Teacher -/10 points Content Carbon dating An archaeologist finds some ancient jewelry made from bone. The jewelry has a carbon mass of 435 g (HINT: Assume all the carbon is 12C and determine the number of atoms) and careful measurements show that the remaining 14C has a current decay rate of 11 decays/s. Determine the age of the bone (and presumably the jewelry). Remember, the ratio of 14C to 12C when the animal died was...
Rubidium-Strontium dating decay and becomes A geologist finds an old rock and wants to determine its...
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
Using isotope ratios to radiodate Christ The haif life for the radioactive decay of rubidium-87 to...
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
4) An igneous Martian meteorite contains four different minerals with the following isotopic compositions: Mineral Covidite...
4) An igneous Martian meteorite contains four different minerals with the following isotopic compositions: Mineral Covidite Trumpite Insleeite Faucite 87Rb/86Sr 10 7.00 5.00 2.00 87St/86Sr 1.12 0.101 0.89 0.79 86Sr and 878r are stable isotopes but 87Rb is radioactive and decays to 875r with a decay constant (time to decay by e-?) of 7 x 1010 years. When the minerals formed by crystallization from a liquid they had identical 875r/86Sr ratios. Plot the data on a graph of 87Sr/86Sr (y...
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
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
1010 years. What is the age of a rock sample that contains 1042 ug Rubidum 87 decays by β production to strontium-87 with a half life of 4.7 87Rb and 4.3 μg 87Sr ? years old Assume that no 87Sr was present when the rock was fomed The atomic masses are given in the table below: Nuclide Atomic Mass 87Rb 86.90919 87Sr 86.90888
10 The half life for the radioactive decay of rubidium-87 to strontium-87 is 4.88 x 10 years. Suppose nuclear chemical analysis shows that there is 0.271 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. Ar years x10
11. My Notes Ask Your Teacher -/10 points Content Carbon dating An archaeologist finds some ancient jewelry made from bone. The jewelry has a carbon mass of 435 g (HINT: Assume all the carbon is 12C and determine the number of atoms) and careful measurements show that the remaining 14C has a current decay rate of 11 decays/s. Determine the age of the bone (and presumably the jewelry). Remember, the ratio of 14C to 12C when the animal died was...
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
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
4) An igneous Martian meteorite contains four different minerals with the following isotopic compositions: Mineral Covidite Trumpite Insleeite Faucite 87Rb/86Sr 10 7.00 5.00 2.00 87St/86Sr 1.12 0.101 0.89 0.79 86Sr and 878r are stable isotopes but 87Rb is radioactive and decays to 875r with a decay constant (time to decay by e-?) of 7 x 1010 years. When the minerals formed by crystallization from a liquid they had identical 875r/86Sr ratios. Plot the data on a graph of 87Sr/86Sr (y...
Most questions answered within 3 hours.
-
Two electrons are initially at rest separated by a distance of
2nm. At time t=0, they...
asked 2 minutes ago -
Magnesium and nitrogen react in a combination reaction to
produce magnesium nitride. 3 Mg + N2...
asked 4 minutes ago -
A martial artist is practicing breaking 5 boards. He is able to
break aboard with probability...
asked 9 minutes ago -
The rate constant of a first-order reaction is 2.95 × 10−4 s−1
at 350.° C. If...
asked 12 minutes ago -
implement a class called PiggyBank that will be used to
represent a collection of coins. Functionality...
asked 3 minutes ago -
2. Use the following information in the table to answer the
following questions. (Numbers are in...
asked 9 minutes ago -
The fuel economy of a 2011 Lexus RX 350 2wd 6 cylinder 3.5 L
automatic 5...
asked 18 minutes ago -
i.
the synthesized compund 2-bromo-butanal i have a IR peak at about
3200 and one at...
asked 18 minutes ago -
A
752 mL sample of water was placed in a 1000 gram pan of aluminum.
The...
asked 29 minutes ago -
1.In the context of chelation, what does binding strength mean?
What happens at the molecular level...
asked 22 minutes ago -
Describe two obstacles that makes fixing atmospheric nitrogen
difficult.
asked 41 minutes ago -
Evelyn incorporates her sole proprietorship, transferring it to
newly formed Papaya Corporation. The assets transferred have...
asked 27 minutes ago