The atmosphere of the planet Argos contains the following atom percentages of the isotopes of argon: 36Ar(atomic mass 35

Chemistry Sep 11, 2020

The atmosphere of the planet Argos contains the following atom percentages of the isotopes of argon: 36Ar(atomic mass 35.968 amu), 70.0%, 38Ar (atomic mass 37.963 amu), 20.0% and 40Ar (atomic mass 39.962 amu), 10.0%. The average atomic mass of argon(the atomic mass on the periodic table on Argos) on planet Argos will then be...

Expert Solution

You need to use the percentages to calculate the contribution of each mass into the average.

Average mass of Ar on Argos = 0.700(35.968 amu) + 0.200(37.963 amu) + 0.100(39.963 amu)

Should get a number around 36.77 amu for argon on planet argos

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