AP Chemistryeasymcq1 pt
A compound with empirical formula CH₂O has a molar mass of 180 g/mol. What is its molecular formula?
A.C₆H₁₂O₆
B.C₃H₆O₃
C.CH₂O
D.C₅H₁₀O₅
Explanation
Core Concept
Empirical formula mass of CH₂O = 12.01 + 2.02 + 16.00 = 30.03 g/mol. Ratio = 180/30 = 6, so the molecular formula is (CH₂O)₆ = C₆H₁₂O₆.
Correct Answer
AC₆H₁₂O₆
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