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98. silicon has three naturally occurring isotopes: si-28 with mass 27.9769 amu and a natural abundance of 92.21%, si-29 with mass 28.9765 amu and a natural abundance of 4.69%, and si-30 with mass 29.9737 amu and a natural abundance of 3.10%. calculate the atomic mass of silicon.
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98. silicon has three naturally occurring isotopes: si-28 with mass 27.9769 amu and a natural abund...
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