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Sagot :
Answer:
a) 2.632 kg
b) 41.36 kg
Explanation:
Given data:
Mass of CO react = ?
Mass of Fe formed = 3.50 Kg (3.50 /1000 =3500 g)
Mass of CO₂ formed = ?
Solution:
Chemical equation;
Fe₂O₃ + 3CO → 2Fe + 3CO₂
Number of moles of Fe:
Number of moles = mass/molar mass
Number of moles = 3500 g/55.85 g/mol
Number of moles = 62.67 mol
now we will compare the moles of iron with CO.
Fe : CO
2 : 3
62.67 : 3/2×62.67 = 94 mol
Mass of CO:
Mass = number of moles × molar mass
Mass = 94 mol × 28 g/mol
Mass = 2632 g
In kilogram:
2632g × 1 Kg /1000 g
2.632 kg
Now we will compare the moles of Fe with CO₂
Fe : CO₂
2 : 3
62.67 : 3/2×62.67 = 94 mol
Mass of CO₂:
Mass = number of moles × molar mass
Mass = 94 mol × 44 g/mol
Mass = 4136 g
In kilogram:
4136g × 1 Kg /1000 g
41.36 kg
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