Help pl Nitrogen has two isotopes. Nitrogen-14 is 98.76% abundant and nitrogen-15 is 1.24%
abundant. What is the average atomic mass of nitrogen? Show work!
(These are not the actual abundance amounts, they were altered for practice. Use the simulation to try to match the
percentages is you need help)

The percent abundance of N-15 is 0.6403%.

Explanation:

The atomic mass of an element is a weighted average of its isotopes in which the sum of the abundance of each isotope is equal to 1 or 100%.

Formula for Calculating Isotope Percent Abundance

(x)(mass)+(1−x)(mass)=100%

Explanation:

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b. acid is the correct answer @jayxboof all social media

acid : acids are those which accepts an electron-pairs.

base : bases are those which donates ab electron-pairs.

alkali : it is a base that dissolves in water. it is basically a base and the ph greater than 7.

hydroxide ion : it is a poly-atomic ion which is negatively charged.

1.solid

2.carbon dioxide

3.helium