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the bay of bengal is to the eas of India
A) Every Pb2+ atom detected in the zircon sample must be the result of radioactive decay, while some Pb2+ atoms found in sphene could have been incorporated during its formation.
Explanation:
The reason why the geochemist will prefer to use the ziron which takes the 4+ cation would be because, every Pb2+ atom detected in the zircon sample must be the result of radioactive decay, while some Pb2+ atoms found in sphene could have been incorporated during its formation.
✓ The Pb 2+ produced the daughter isotopes of the radioactive decays.
✓ To properly date the rock sample, any external source of the daughter isotopes should be eradicated.
✓ This will help to establish a fair ratio between the parent and daughter isotopes in order to track the decay rate.
✓ This is why the Zircon would be preferred to the Sphene.
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Earth's air is made up of molecules of different gases that are not joined chemically, and a terminology which best describes air is mixture.
<h3>What is a mixture?</h3>
A mixture can be defined as a combination of two (2) or more substances which are present in varied proportion (unfixed ratios). Also, a mixture can be visibly seen with our na-ked eyes and separated by physical means.
<h3>The types of mixture.</h3>
In Chemistry, there are two (2) main types of mixture and these include the following;
From the above definition of a mixture, we can reasonably infer and logically deduce that the particles of a mixture do not have a set ratio on how to combine and they can be separated through the use of a physical separation technique.
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