Chemistry, 05.07.2019 06:30, moutchyjoseph

Anew element -- quickly named swiforskium by the scientific community -- is discovered. this element is found to have two isotopes. 86.4% of all swidorskium atoms are swidorskium-428 and 13.6% are swidorskium-433. what is the atomic mass of this element? show your work.

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Anew element -- quickly named swiforskium by the scientific community -- is discovered. this element...