Question

(Need Help ASAP) 23.5 grams of iron(III) oxide (Fe2O3) are reacted with excess carbon. What is the theoretical yield of iron metal?

2 Fe2O3 + 3 C --> 4 Fe + 3 CO2

Answer 1

The theoretical yield of iron metal : 16.418 g

Further explanation

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

Reaction

2 Fe₂O₃ + 3 C ⇒ 4 Fe + 3 CO₂

mol Fe₂O₃ (MW=159,69 g/mol) :

$\tt \dfrac{23.5}{159.69}=0.147$

mol  Fe₂O₃ : mol Fe = 2 : 4

mol Fe :

$\tt \dfrac{4}{2}\times 0.147=0.294$

mass Fe(the theoretical yield) :

$\tt 0.294\times 55.845~g/mol=16.418~g$

Answer 2

Answer:

The correct answer with signfigs is 16.4 for the first part

The second box is 88.4

Explanation: