Answer:
Ok this is my answer for you, I don't know if it will help but I hope it will
Step-by-step explanation:
The balance chemical equation is
Fe2O3+3CO=2Fe+3CO2
Convert the 3.80g of Fe2CO3 to moles using the equation
Moles=mass/molar mass
Molar mass of Fe2O3=159.69g/mol
Moles of Fe2O3=3.80/159.69= 0.0238mol
The molar ratio of Fe2O3 to Fe is 1:2
The 1=0.0238mol
2 = x moles of Fe
Cross multiplying gives
x=0.0476mol of Fe
Convert moles to mass using the same equation solving for mass gives
Mass=moles*molar mass
Molar mass of Fe=55.845g/mol
Mass of Fe=0.047*55.845=2.66grams