Question

Calculate mass percent of different elements
present in Fe202
3 (Foric Oxide) :​

Answer 1

Answer:

Fe: 70%

O: 30%

Explanation:

I think you meant Ferrous Oxide [Fe₂O₃].

Step 1: Calculate the molar mass of Fe₂O₃

⇒ (2x56) + (3x16) = 112 + 48 = 160 grams per mole

Step 2: Calculate the mass percentage of Iron in Fe₂O₃:

⇒ Mass of Iron = 112

Mass % = $\frac{112}{160} * 100$ = 70%

∴ Iron makes up 70% of Fe₂O₃.

Step 3: Calculate the mass percentage of Oxygen in Fe₂O₃:

⇒ Mass % of Oxygen = Total mass % - Mass % of Iron = (100 - 70)% = 30%

∴ Oxygen makes up 30% of Fe₂O₃.

Hope this helps!