AP Chemistryhardmcq1 pt
A reaction produced 5.6 g of Fe (55.85 g/mol) from Fe₂O₃. How many moles of Fe₂O₃ reacted?
A.0.050 mol
B.0.10 mol
C.0.20 mol
D.0.025 mol
Explanation
Core Concept
Moles Fe = 5.6 ÷ 55.85 = 0.10 mol. The 1:2 Fe₂O₃:Fe ratio halves it: 0.10 ÷ 2 = 0.050 mol Fe₂O₃.
Correct Answer
A0.050 mol
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