Answer :

lnapol1555

Answer:

hm

Explanation:

aless91
1. solve the bracket (OH)3= 3 Oxygen, 3 Hydrogen

2. multiply 2Fe with (OH)3= 2*3= 6, 2*3=6

3. solve 2FE3= 2*3= 6FE

4. Add all= 6Fe+ 6oxygen+ 6H= Total atom 18

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