Answer:
There were originally 8 atoms of Potassium-40.
Explanation:
The half-life of a radioactive material is the time taken for half the original material to decay or the time required for a quantity of the radioactive substance to reduce to half of its initial value.
If the original material formed without any Argon-40, it means that the atoms originally present were Potassium-40 atoms.
Presently, there are 7 Argon-40 atoms for every 1 of Potassium-40, we can deduce the number of half-lifes the Potassium-40 has undergone as follows :
After one half-life, (1/2) there will be one Potassium-40 atom for every Argon-40 atom.
After a second half life, 1/2 × 1/2 = 1/4: there will be one Potassium-40 atom for every three atoms of Argon-40.
After a third half-life, 1/4 × 1/2 = 1/8: there will be one Potassium-40 atom for every 7 atoms of Argon-40.
Since there are 1/8 atoms of Potassium-40 presently, there were originally 8 atoms of Potassium-40.
Answer:
I dont know
Explanation:
coz I don't know the answer
Answer:
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Anabolism is characterized as the assembly of large molecules from small molecules.
Anabolism is the set of chemical reactions of molecular synthesis of the organism considered. It is the opposite of catabolism, set of degradation reactions.
The reactions of the anabolism are reductions and are not spontaneous, they are endergonic reactions that is to say that they require a contribution in energy to take place. We can also talk about biosynthesis.
These reactions allow living organisms to synthesize essential metabolites from the basics provided by the diet and result in the building or renewal of tissues.
Examples: photosynthesis, protein biosynthesis.
