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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)
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OpenStudy (cuanchi):
0.15 x 51 + 0.07 x 52 + 0.78 x 50= ???
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