Math Problem Statement

Consider a sample containing 1.542x10-18 grams of Fe2O3. How many oxygen atoms are in the sample? Express your answer using at least three significant digits.

Solution

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Math Problem Analysis

Mathematical Concepts

Stoichiometry
Molar Mass
Mole Concept
Avogadro's Number

Formulas

Molar mass of Fe₂O₃ = (2 × 55.85) + (3 × 16.00)
Moles of Fe₂O₃ = mass / molar mass
Moles of oxygen atoms = moles of Fe₂O₃ × 3
Number of oxygen atoms = moles of oxygen atoms × Avogadro's number

Theorems

Avogadro's Law

Suitable Grade Level

Grades 11-12