Geography, 09.11.2020 16:20 ginger87771
A sample of the lava flow within the outcrop has 707 Uranium-235 atoms, and 293 Lead-207 atoms. How old is the lava flow?
Answers: 1
years. The initial amount of Uranium-235 is the sum of current atoms of Uranium-235 and Lead-207. The decay of isotopes is modelled by the following ordinary differential equation:
(Eq. 1)
- Rate of change of the amount of Uranium-235 atoms, measured in atoms per year.
- Current amount of Uranium-235 atoms, measured in atoms.
- Time constant, measured in years.
(Eq. 2)
- Initial amount of Uranium-235 atoms, measured in atoms.
- Time, measured in years.
(Eq. 3)
, 
and 
, then the age of the lava flow is:
Another question on Geography
Geography, 22.06.2019 17:00
Plants in the tundra biomes have had to adapt to live long periods of time without a. cool temperatures b. sunlight c. oxygen d. water
Answers: 1
Geography, 22.06.2019 18:30
One of the main reasons the united states occupied japan after world war ii was that
Answers: 1
Geography, 23.06.2019 13:30
What border separates sonora and chihuahua national border state border physical boundary natural boundary
Answers: 1
Geography, 23.06.2019 15:30
Why might a single rock layer exhibit different types of sedimentary rocks within it? view available hint(s) why might a single rock layer exhibit different types of sedimentary rocks within it? such a rock layer, termed a facies, when traced laterally represents a variety of depositional environments that formed in a sequence over time. such a rock layer, termed a facies, when traced laterally represents a single depositional environment that formed over time. such a rock layer, termed a facies, when traced vertically represents a variety of depositional environments that formed at the same time across a broad area. such a rock layer, termed a facies, when traced laterally represents a variety of depositional environments that formed at the same time across a broad area. such a rock layer, termed a facies, when traced vertically represents a variety of depositional environments that formed in a sequence over time.
Answers: 1
You know the right answer?
A sample of the lava flow within the outcrop has 707 Uranium-235 atoms, and 293 Lead-207 atoms. How...
Questions
