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 correct answer with signfigs is 16.4 for the first part

The second box is 88.4

Step-by-step explanation:

Answer 2

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 (23.5)/(159.69)=0.147`

mol Fe₂O₃ : mol Fe = 2 : 4

mol Fe :

`\tt (4)/(2)* 0.147=0.294`

mass Fe(the theoretical yield) :

`\tt 0.294* 55.845~g/mol=16.418~g`