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What is the formula mass of FeO3?

Chemistry
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can you show me how to do it with all your work make sure it is the correct unit labels please! thank you
What's a formula mass?
55.847 (mass of Fe) + 3(15.999) (mass of 3 oxygen's) = 103.844 g

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Other answers:

wait thats the formula of it?
that is how you find the formula mass.
im confused now
there is one Iron, Fe, and 3 Oxygen, O. So you add the Fe, 55.847 + 3*15.999, which is the mass of oxygen. the mass of oxygen is 15.999 but since there are 3 of them you have to multiply 3 and 15.999 and add that to 55.847 to get the total mass which is 103.844 g.
To find the mass of the formula, you look at the periodic table Fe = ______ g O = 3( ______)g you mutiply by three b/ there are 3 oxygens. You then proceed to add evrything to get the mass.
Do it steps @Tttaammmaannnaa
so the mass os 103.844 right?
Since there is one Iron, Fe. the mass is 55.487. The mass of 3 oxygen's is 47.997. Add 55.487 and 47.997 and you get 103.844
the mass of Fe is 55.847. sorry
so the answer is 103.844
yes
ok thank you so much that helped a lot thank you again!

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