0
Rate this Study Guide:
☆☆☆☆☆Radioactive dating is a technique used to find how old an object is.
One such example is potassium-argon dating, where potassium decays into argon. The proportion of potassium to argon suggests how old the object in question is.
An equation used is t = (1/c)Ln(1+(D/P)) Where c is the decay constant D is number of daughter atoms (number decayed) P is the number of parent atoms (number undecayed) t is the age of the object.
Another common technique in dating an object is carbon dating. Because the amount of carbon-14 has remained roughly constant through time on the earth it is possible to calculate the age of an object by finding the proportion of carbon-14 to carbon-12.
There is a suspicion that the relative abundance of carbon-14 could be changing due to the thinning of the ozone layer. The amount of carbon-14 depends on the amount of radiation permeates the ozone and thus the amount could be changing. Not proven, only a hypothesis.
Accuracy radioactive dating is called radiometric dating. This is taught in biology.
the strong nuclear force is more than 100 times greater than the electric force.
There are three beta decay modes for 40K, and so three equations.
The equation for the negative beta decay of 40K: 1940K --> 2040Ca + -10e
where the -10e represents a beta particle or electron.
The equation for the positive beta decay of 40K: 1940K --> 1840Ar+ 10e
where the 10e represents a positive beta particle or positron.
The equation for the decay of 40K by electron capture is:1940K + -10e --> 1840Ar + ve
The fans sitting in the bleachers
The biggest issue associated with nuclear power is determining what can be done with the radioactive waste.
An alpha particle being emitted would result in a transmutation.
One element decaying into another, which decays into another
A neutron is absorbed by an atoms nucleus
Steel-reinforced concrete
1kj x 1/H fusion x g/mol solid
they will more likely be absorbed by more atoms in uranium-235
Apex::: Nuclear fission is the splitting of a nucleus into two or more nuclei
In a nuclear fission reaction, a freely moving neutron undergoes neutron capture and initiates the nuclear fission of a fuel atom.
