Question

Masa moleculara pentru FE2 O3

Answer 1

$\displaystyle{ M_{Fe_{2}O_{3}} = 2 \cdot A_{Fe} + 3 \cdot A_{O} }$

$\displaystyle{ A_{Fe} = 56 \ ; \ A_{O} = 16 }$

M = 2 × 56 + 3 × 16

M = 112 + 48

M = 160 g/mol