Mathematics, 26.07.2019 04:00 vieraml58

The atomic weight of an unknown element, in atomic mass units (amu),is approximately 20% less than that of calcium. the atomic weight of calcium is 40 amu. what is the approximate weight, in amu, of the unknown element?

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The atomic weight of an unknown element, in atomic mass units (amu),is approximately 20% less than t...

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