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are atoms of the same element with different masses because the number of neutrons in those atoms is different.
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Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?
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Anyone who's in connections academy chemistry b have the factors that affect the rate of a reaction portfolio already done?
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are atoms of the same element with different masses because the number of neutrons in those atoms is...
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