Average atomic mass of magnesium is 24.3. This magnesium contains 80 mole % of 24mg, 20 mole % of 26mg and 25mg. Calculate the mole % of 25mg.
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Answer: 0.4 may be
Explanation: but total percentage is 100 but in the question you're given 24 - 80%,
26 -20% total 100% but you asked about Mg 25
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Answer is 10%
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