Which of the satements below is/are limitations of Dumas Method? The Ideal condition is just an assumption for the vapor of the volatile sample The sample must be a volatile liquid with a boiling point above 25°C and below 100°C using similar method Possibility of having Impurities may not cause discrepancies of the result     only i is the limitation     only ii and iii are the limitations     only i and ii are the limitations     All are Method's limitation

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