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3 years ago

What is the percent by mass of oxygen in fe2o3

2 answers:

5 0

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

anygoal [31]3 years ago

4 0

30% is the answer. Good luck

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