What is the average atomic mass for nitrogen using the two primary isotopes. Nitrogen 14 has a abundance of 95.9300 and exact weight of 14.003074. Where as nitrogen 15 has abundance of 0.370000% and exact weight of 13.000108 AMU

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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What is the average atomic mass for nitrogen using the two primary isotopes. Nitrogen 14 has a abundance of 95.9300 and exact weight of 14.003074. Where as nitrogen 15 has abundance of 0.370000% and exact weight of 13.000108 AMU (consider significant figures)

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The atomic masses of isotopes are different and they exist in different proportion. Hence, the average atomic mass of the element is the summation of masses of isotopes multiplied by its natural abundance. The natural abundance is the abundance of particular isotope to occur naturally on the earth’s crust. Mass number is the number of protons and neutrons in the atomic nucleus.

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