# chemistry

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The atomic mass of iron oxide is 160 atomic mass units. What is the atomic mass of iron if a molecule of iron oxide consists of tow atoms of iron and three atoms of oxgen?

• chemistry -

let us assume that O is 16
then 3 O = 48
then I +48 = 160
I = 160-48

• Physics -

Damon,
Is the answer the same with 2 atoms of iron?
Thank you so much....

The atomic mass of iron oxide is 160 atomic mass units. What is the atomic mass of iron if a molecule of iron oxide consists of two atoms of iron and three atoms of oxgen?

• chemistry -

Oh sorry
2 I = 160 - 48

• chemistry -

That is 56 which is what you will find if you look up the atomic mass of iron using Google

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