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Hi all,
So I am trying to find the percent composition of Magnesium Oxide and my masses were
Magnesium: 0.2 grams
Oxygen: 0.06 grams
Magnesium Oxide: 0.26 grams
So I did (0.2/0.26) x 100 and got my percentage and did (0.06/0.26) x 100 and got that percentage..
Magnesium: 76.9%
Oxygen: 23.1%
HOWEVER, after seeing online I've seen people get the Atomic mass of Magnesium (24.31) and divide it by Molar mass of Magnesium Oxide (40.31) to get a percentage that way (which is different than the before percentage). So now I'm conflicted on what should I do.. especially after this I need to find the percent error as well..
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