Answered

Need help how to find the atomic mass?

Need Help How To Find The Atomic Mass class=

Answer :

FROGE87832GO

use the formula:

average atomic mass= atomic mass1 × abundance1/100 + atomic mass2 × abundance2/100

62.9296 × 69.15/100 + 64.9278 × 30.85/100=

62.9296 × 0.6915 + 64.9278 × 0.3085=

43.5158 + 20.0302=

63.546 amu

so the answer is 63.546 amu

(the element is europium)

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