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September 21, 2014

Homework Help: chemistry

Posted by monique n on Wednesday, December 8, 2010 at 6:22pm.

magnesium has 3 isotopes. Magnesium-24 has a percent abundance of 78.99%. Magnesium-26 has a percent of 11.01%. what is the percent abundance of magnesium-25? assume that there are no other magnesium isotopes.

how do i do this please help

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