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Determine the quantity of each atom in a compound
1. CaCO3
2.3 BaF2
3.4 H₂PO4
4. Sr(OH)₂
5. 3 Al2(Cr₂O7)3


Sagot :

1. 5 atoms
2. 5 atoms
3. 11 atoms
4. 5 atoms
5. 18 atoms