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Chemistry 8 Online
OpenStudy (4meisu):

Calculate the weight of silicon using the following data for the percent natural abundance and mass of each isotope: 92.23% 28Si (27.97 amu); 4.67% 29 Si (28.97); 3.10% 30Si (29.97 amu).

OpenStudy (anonymous):

\[27.97*0.9223+28.97*0.0467+29.97*0.0310=28.08amu\] We can't go anymore accurate due to the 3 SF limitation of the 3.10% and the 4.67%.

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