Problem: Iron is mined from the earth as iron ore. Common ores include Fe2 O3 (hematite), Fe3 O4 (magnetite), and FeCO3 (siderite).Calculate the mass percent composition of iron for Fe2O3 (hematite).

FREE Expert Solution

mass percent=mass componenttotal mass×100

Assuming a 100 g sample:

For Fe2O3:

mass Fe=100 g Fe2O3(1 mol Fe2O3159.69 g Fe2O3)(2 mol Fe1 mol Fe2O3)(55.845 g Fe1 mol Fe)=69.94 g Fe

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Problem Details
Iron is mined from the earth as iron ore. Common ores include Fe2 O3 (hematite), Fe3 O4 (magnetite), and FeCO3 (siderite).

Calculate the mass percent composition of iron for Fe2O3 (hematite).

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