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Chemistry 12 Online
OpenStudy (anonymous):

An element has three naturally occurring isotopes. Use the information below to calculate the weighted average atomic mass of the element, showing both the setup and the final answer for the calculation.

OpenStudy (anonymous):

Isotope Atomic Mass Percent Abundance A 15.99 u 99.762% B 16.99 u 0.038% C 17.99 u 0.200%

OpenStudy (anonymous):

just multiply percentage with atomic weight and then sum up like this: 15,99 * 0,99762 + etc.

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