arionhwrd2861 arionhwrd2861
  • 18-06-2019
  • Chemistry
contestada

What is the percent by mass of oxygen in fe2o3

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Аноним Аноним
  • 18-06-2019
To get the formula mass we have to add the atomic mass of each atom
(55.847 x 2) + ( 16 x 3) = 160
this means that 16 x 3 = 48 are the grams of O
% = 48 x 100 / 160 =30 %

hope this helped mark me brainliest
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tia7975
tia7975 tia7975
  • 19-06-2019
30% is the answer. Good luck
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