Asked by Jack

a) Fe2O3 b) Ca3P2
How many atoms of each element are contained in 200 g of each of the above compounds?
Answered by DrBob222
Fe2O3
mols Fe2O3 in 200 g Fe2O3. mols = grams/molar mass = ?
There are twice a many mols Fe and three times as many mols of O..
Then there are 6.02E23 atoms in a mole of anything. Post your work if you get stuck.
Answered by Jack
I understand it now. Thank you
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