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Daniel [21]
2 years ago
6

Please Help ASAP it's due soon. I will brainliest

Geography
1 answer:
spin [16.1K]2 years ago
6 0

Answer:

the answer is c

Explanation:

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  • The alps are the highest and the most extensive type so f the mount ranges system of the Europe and they stretch to about 1200 km and they were formed by the 10 million of year the collision of the African and the Eurasian plates and this event led to the marine sediments to rose and they left the folded mount peaks as the mount blanc and Matterhorn.
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The isotope silicon 32 decays into phosphorus 32. Silicon 32 has a half-life of 170 years and can be used to find the age of roc
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B and C

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This is the concept of half-life. Half life is the time take for half of a radioactive isotope to disintegrate. The shorter the half life the faster the isotope disintegrates.

From the question, we were told that it would take 170yrs for half of the isotope of Silicon to disintegrate to Phosphorus. This is the half life.

C. The half life can be used to determine the amount of Si-32 that has decayed from the time closure temperature was reached.

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From first order kinetics, we know that the rate at which radioactive elements decay at any time is directly proportional to the number of radioactive atoms present. A knowledge of the half life helps to figure out the number of atoms that has decayed in time.

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