1:15 is the ratio of radioactive parent isotope to stable daughter isotope,
after four half-lives of decay.
Let:
- 'A' be the initial concentration of the radioactive parent isotope
- 'n' be the number of corresponding half-lives
- 'A/2ⁿ ' be the final concentration of the radioactive parent isotope
Using the Exponential Decay Relation:
A → A/2ⁿ ( after 'n' half-lives )
A⁴ → A/2⁴
A⁴ → A/16
∵The final concentration of the radioactive parent isotope is A/16.
∴The initial concentration of the stable daughter isotope will be 15A/16.
1:15 is the ratio of radioactive parent isotope to stable daughter isotope,
after four half-lives of decay.
Learn more about questions on Radioactive decay:
brainly.com/question/15575933
<span>The answer is : Everything in the physical
universe, left to itself, moves to maximum entropy.
The greater the
entropy, the less available the energy; applies to most of physics;
human behavior is not predictable however.
Hope this helps
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I cant see the pictures right take another picture and maybe i will be able to help you
Answer:
What is true of natural selection? A. Natural selection is a random process. B. Natural selection creates beneficial mutations. C. The only way to eliminate harmful mutations is through natural selection. D. Mutations occur at random; natural selection can preserve and distribute beneficial mutations.
The answer is D
Explanation:
natural selection can simply be explained as individuals that have specific inheritable traits will most likely tend to adapt and survive and as well reproduce at higher rates than others. mutation occurs when the nucleotide sequence of an organism changes. so natural selection can preserve and distribute beneficial mutations.
Nucleus can be defined as a large organelle found in the Eukaryotic cells and it is also know as the cell's command center,thus it controls the activity of the cells
Explanation:
- The answer to the above question is (c )nucleus. During the cell cycle the nucleus of the cell mediates the replication of the of the DNA and controls the gene expression.
- The nucleus contains a structure which is known as nucleolus and which is made up of protein and ribonucleic acid(RNA)
