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793 atoms of a particular isotope weigh 2.2394 x 10^-19 grams. If the isotope contains 69 protons, how many neutrons are in the nucleus?

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  • 793 atoms of a particular isotope weigh 2.2394 x 10^-19 grams. If the isotope contains 69 protons, how many neutrons are in the nucleus?


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