February 22, 2017

Homework Help: Science/Math

Posted by Please help! on Wednesday, April 13, 2011 at 4:01pm.


Suppose that a newly discovered element called centium has three isotopes that occur in nature. These are centium-200, centium-203, and centium-209. Assume that these isotopes occur in equal amounts in nature. What will be the average atomic mass of this element?

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