Problem: Magnesium has three naturally occurring isotopes Mg-24, Mg-25, and Mg-26). The atomic mass and natural abundance of Mg-24 are 23.9850 amu and 79 %. respectively. The atomic mass and natural abundance of Mg -25 are 24.9858 amu and 10 %, respectively. Find the natural abundance of Mg-26. Express your answer using two significant figures.Find the atomic mass of Mg-26. Express your answer using two significant figures.

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Atomic Mass=[mass×f.a.]isotope 1+[mass×f.a.]isotope 2+...


sum percent abundance = 100


% abundance of 26Mg = 100 - 79 - 10 

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Problem Details

Magnesium has three naturally occurring isotopes Mg-24, Mg-25, and Mg-26). The atomic mass and natural abundance of Mg-24 are 23.9850 amu and 79 %. respectively. The atomic mass and natural abundance of Mg -25 are 24.9858 amu and 10 %, respectively. 

Find the natural abundance of Mg-26. Express your answer using two significant figures.


Find the atomic mass of Mg-26. Express your answer using two significant figures.

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