question\na sample of silicon has an average atomic mass of 28.084 amu. in the sample, there are three…

question\na sample of silicon has an average atomic mass of 28.084 amu. in the sample, there are three isotopic forms of silicon. about 92.22% of silicon atoms are 27.9769 amu, which have the mass of ²⁸si; about 4.68% are 28.9764 amu, which have the mass of ²⁹si, and the remaining isotope, ³⁰si, has a mass of 29.9737 amu. calculate the percent isotopic composition of ³⁰si.\nprovide your answer below:\n\n%

question\na sample of silicon has an average atomic mass of 28.084 amu. in the sample, there are three isotopic forms of silicon. about 92.22% of silicon atoms are 27.9769 amu, which have the mass of ²⁸si; about 4.68% are 28.9764 amu, which have the mass of ²⁹si, and the remaining isotope, ³⁰si, has a mass of 29.9737 amu. calculate the percent isotopic composition of ³⁰si.\nprovide your answer below:\n\n%

Answer

Explanation:

Step1: Recall the fact that the sum of isotopic abundances is 100%

Let the percent abundance of (^{30}Si) be (x). We know that (92.22%+4.68% + x=100%)

Step2: Solve for (x)

First, add the known abundances: (92.22% + 4.68%=96.9%) Then, (x = 100% - 96.9%) (x = 3.1%)

Answer:

3.1%