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ANEK [815]
2 years ago
11

For which of the following can a relative age be determined? Select all that apply.

Chemistry
1 answer:
Allushta [10]2 years ago
5 0

Answer: A. fossil

B. rock layer

Explanation:

Relative aging or dating can be define as the technique for determination of the age of the rock and fossil. It is a method of determining the chronological order of the past events by comparing the stratigraphic column of rocks and sediments with each other. This method can only give relative age of one object in comparison with the other but does not give the absolute date.  

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Isotope Atomic Mass (amu) Percent Abundance
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Answer:

The average atomic mass is closer to Si- 28 because this isotope is present in more percentage in the sample.

Explanation:

Given data:

Atomic mass of silicon= ?

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Solution:

Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)+(abundance of 2nd isotope × its atomic mass)  / 100

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The average atomic mass is closer to Si- 28 because this isotope is present in more percentage in the sample.

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