Multiple Choice
Given that the empirical formula is HO and the molar mass is 34.02 g/mol, what is the molecular formula of the compound?
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3. Chemical Reactions
Molecular Formula
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Which of the following is the correct molecular formula for carbon dioxide?
A
CO
B
C2O
C
CO2
D
C2O2
Verified step by step guidance1
Step 1: Understand that the molecular formula represents the actual number of atoms of each element in a molecule.
Step 2: Recall that carbon dioxide is composed of one carbon atom and two oxygen atoms bonded together.
Step 3: Write the molecular formula by placing the symbol for carbon (C) followed by the symbol for oxygen (O) with the appropriate subscript indicating the number of oxygen atoms.
Step 4: Since there are two oxygen atoms, the subscript '2' is placed after the oxygen symbol, resulting in the formula \(C\mathrm{O}_2\).
Step 5: Verify that the formula \(C\mathrm{O}_2\) correctly represents one carbon atom and two oxygen atoms, matching the known composition of carbon dioxide.
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