A robot spacecraft returned samples from the planetesimal 98765 Aleks, located i

Question

A robot spacecraft returned samples from the planetesimal 98765 Aleks, located in the outer solar system. Mass-spectroscopic analysis produced the following data on the isotopes of ruthenium in these samples: Use these measurements to complete the entry for ruthenium in the Periodic Table that would be used on 98765 Aleks. Be sure your answers have the correct number of significant digits. Caution: your correct answer will have the same format but not necessarily the same numbers as the entry for ruthenium in the Periodic Table we use here on Earth.

Explanation / Answer

mass of Ru = sum of (abundance * mass)
= 0.950*99.9 + 0.050*97.9
= 99.8 amu

Answer: 99.8 amu

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