Chemistry

Question Analysis
This question evaluates the student's ability to calculate the percent composition of iron in a hydrated compound.

Key Concept Explanation
The percent composition of an element in a compound is calculated using the formula: (Mass of the element in 1 mole of the compound / Molar mass of the compound) × 100%.

Step-by-step Solution
1. Calculate the molar mass of the compound .
Molar mass of Fe = 2 × 55.8 g/mol = 111.6 g/mol
Molar mass of S in = 3 × 32.1 g/mol = 96.3 g/mol
Molar mass of O in = 12 × 16.0 g/mol = 192.0 g/mol
Molar mass of H in

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