Question
Calculate the relative formula mass (Mr) of Fe_(2)O_(3) Relative atomic masses (A_(r)) N=16 Fe=56
Answer
4.6
(273 Votes)
Emerson
Master · Tutor for 5 years
Answer
The relative formula mass (
) of
is
.
Explanation
## Step 1:In order to calculate the relative formula mass (
) of a compound, we sum up the relative atomic masses \((A_r)\) corresponding to each type of atom in the formula, each multiplied by its count within the formula.## Step 2: For the compound
:-
(Iron) has 2 atoms with a relative atomic mass of
.-
(Oxygen) has 3 atoms with a relative atomic mass of
.## Step 3:Using the previous information, the relative formula mass of
can be calculated as follows.###