Question

Iron is found in Earth's crust as several iron compounds. Calculate the mass in kilograms of the amount of each of the following iron compounds that contains 8.0×10^3kg of iron
Fe2O3 (hematite)

Express your answer using two significant figures.

Answer 1

The mass of hematite that contains 8.0×10³ kg of iron is 2.29 × 10⁴ kg.

What are iron ores?

Iron ores refers to minerals in which iron occur in combined form found in the earth's crust.

Some ores of iron include:

• hematite,
• magnetite,
• limonite, and
• siderite.

Molar mass of hematite, Fe₂O₃ = 160 g/mol

Molar mass iron = 56 g/mol

Percent mass of iron in hematite = 56/160 = 35%

The mass of hematite that contains 8.0×10³ kg of iron = 8.0 × 10³kg/0.35 = 2.29 × 10⁴ kg.

Therefore, the mass of hematite that contains 8.0×10³ kg of iron is 2.29 × 10⁴ kg.

Learn more about iron ores at: brainly.com/question/4693242

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