This question has multiple parts. Work all the parts to get the most points. Ver

Question

This question has multiple parts. Work all the parts to get the most points. Verify that the atomic mass of magnesium is 24.31, given the following information: 24Mg, mass = 23.985042 u; percent abundance = 78.99% 25Mg, mass = 24.985837 u; percent abundance = 10.00% 26Mg5 mass = 25.982593 u; percent abundance = 11.01% The average atomic mass is given as a weighted average of the atomic masses of each isotope, atomic mass = (atomic mass) times (fractional abundance) What is the fractional abundance of 24Mg?

Explanation / Answer

78.99%

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