Molmasse af jern 3 carbonat?

1. Kemisk formel:

* Jern (III) Carbonat har den kemiske formel fe₂ (co₃) ₃ .

2. Atommasser:

* Fe (jern): 55,845 g/mol

* c (carbon): 12.011 g/mol

* o (ilt): 15.9994 g/mol

3. Beregning:

* jern (Fe): 2 atomer * 55,845 g/mol =111,69 g/mol

* carbon (c): 3 atomer * 12.011 g/mol =36.033 g/mol

* ilt (O): 9 atomer * 15.9994 g/mol =143.9946 g/mol

4. Total molmasse:

* 111,69 g/mol + 36,033 g/mol + 143,9946 g/mol = 291,7176 g/mol

Derfor er den molære masse af jern (III) carbonat (Fe₂ (co₃) ₃) ca. 291,72 g/mol.