Using the chemical equation in the picture, if you have 1.5 grams of Fe, how many moles of Fe would you have? (Round answer to 2

Question

3 years ago

14

decimals) *
2Fe2O3+ C= Fe+3CO2

1 answer:

gavmur [86] · Answer 1 · 2022-08-12T09:39:55+03:00

0.019moles

Explanation:

Given parameters:

Mass of Fe₂O₃ = 1.5g

Unknown:

Number of moles of Fe produced = ?

Solution:

To solve this problem, we must work from the known to the unknown. The known specie here is the mass of Fe₂O₃.

First inspect the equation and balance it;

2Fe₂O₃ + 3C → 4Fe + 3CO₂

Now find the number of moles of Fe₂O₃

Number of moles of Fe₂O₃ = $\frac{mass}{molar mass}$

molar mass of Fe₂O₃ = 2(56) + 3(16) = 112 + 48 = 160g/mol

Number of moles = $\frac{1.5}{160}$ = 0.009375moles

From the equation, we see that;

2 moles of Fe₂O₃ produced 4 moles of Fe

0.009375 moles of Fe₂O₃ will produce $\frac{0.009375 x 4}{2}$ = 0.01875‬moles of Fe

To 2 decimal places;

0.019moles

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