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Answer :
Final answer:
The average atomic mass of Magnesium is 24.270 g/mol.
Explanation:
To find the average atomic mass of Magnesium, we need to calculate the weighted average based on the abundance and mass of each isotope. We will multiply the abundance of each isotope by its mass and sum the results.
- The mass of Magnesium-24 is 23.9850 g/mol and its abundance is 78.70%. Multiplying these together gives us 18.867 g/mol.
- The mass of Magnesium-25 is 24.9858 g/mol and its abundance is 10.03%. Multiplying these gives us 2.503 g/mol.
- The mass of Magnesium-26 is 25.9826 g/mol and its abundance is 11.17%. Multiplying these gives us 2.900 g/mol.
- Finally, we add up the results: 18.867 g/mol + 2.503 g/mol + 2.900 g/mol = 24.270 g/mol.
Therefore, the average atomic mass of Magnesium is 24.270 g/mol.
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