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Silicon has 3 naturally-occurring isotopes: 92.23% of 28Si, with an atomic weight of 27.976927amu;4.67% of 29Si, with an atomic weight of 28.976495amu;3.10% of 30Si with

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Silicon has 3 naturally-occurring isotopes: 92.23% of 28Si, with an atomic weight of 27.976927amu;4.67% of 29Si, with an atomic weight of 28.976495amu;3.10% of 30Si with an atomic weight of 29.973770amu. Based on this data, what is the average molecular weight of silicon

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