Multiple Choice
Which of the following is the molecular formula for cellulose, a common polysaccharide found in plants?
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3. Chemical Reactions
Molecular Formula
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Which of the following is the molecular formula for ozone?
A
CO2
B
O3
C
H2O
D
O2
Verified step by step guidance1
Understand that the molecular formula represents the actual number of atoms of each element in a molecule.
Recall that ozone is a form of oxygen that consists of three oxygen atoms bonded together.
Compare the given options: CO2 (carbon dioxide) has one carbon and two oxygen atoms, H2O (water) has two hydrogen and one oxygen atom, O2 (dioxygen) has two oxygen atoms, and O3 has three oxygen atoms.
Recognize that the molecular formula for ozone must have three oxygen atoms, which corresponds to O3.
Conclude that among the options, O3 correctly represents the molecular formula for ozone.
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