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Chemistry 12 Online
OpenStudy (basically.christa):

A fictitious element X is composed of 15.0% of the isotope X-51, 7.0% of the isotope X-52, and 78.0% of the isotope X-50. Estimate the atomic mass of element X. Show your work. ( WILL GIVE MEDAL AND FOLLOW)

OpenStudy (cuanchi):

0.15 x 51 + 0.07 x 52 + 0.78 x 50= ???

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