Multiple Choice
Which step would help a student find the molecular formula of a compound from the empirical formula?
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3. Chemical Reactions
Molecular Formula
Multiple Choice
How many carbon atoms are present in a molecule of propane (C3H8)?
A
2
B
4
C
8
D
3
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Verified step by step guidance1
Identify the molecular formula of propane, which is given as C3H8.
Understand that the subscript number following an element symbol in a molecular formula indicates the number of atoms of that element in one molecule.
Look at the subscript number next to carbon (C) in the formula C3H8, which is 3.
Recognize that this means there are 3 carbon atoms in one molecule of propane.
Therefore, the number of carbon atoms in a molecule of propane is 3.
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