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Lady_Fox [76]
3 years ago
10

Relative dating methods help scientists to _____.

Chemistry
2 answers:
klasskru [66]3 years ago
8 0
<span>identify the order in which rock units formed</span>
gogolik [260]3 years ago
6 0

identify the order in which they formed


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Elemental exonium (not a real element) consists of two major isotopes abundance mass 18% 98 amu 82% 112 amu what is the atomic w
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In general chemistry, isotopes are a group of substances that belong to the same element. An element is characterized in the periodic table by their atomic number, which is the number of protons in an atom. Therefore, these substances have the same atomic numbers, but differ in mass numbers. Mass number is the sum of the number of protons and neutrons in the nucleus of an atom. 

To determine the atomic weight of an element, you take the average weight of all the existent isotopes of that said element. The calculation would require to multiply the exact mass of the isotope to its abundance. Then, sum them all up.

Atomic weight = 98(0.18) + 112(0.82)
Atomic weight = 109.48 amu
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