Multiple Choice
How many atoms of nitrogen (N) and hydrogen (H) are present in one molecule of hydrazine?
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3. Chemical Reactions
Molecular Formula
Multiple Choice
Which of the following is the correct molecular formula for ammonia?
A
NO2
B
NH4
C
N2H4
D
NH3
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Verified step by step guidance1
Recall that the molecular formula represents the actual number of atoms of each element in a molecule.
Identify the elements present in ammonia: nitrogen (N) and hydrogen (H).
Remember that ammonia is a common compound with one nitrogen atom bonded to three hydrogen atoms.
Compare the given options to the known formula for ammonia: NH3.
Conclude that NH3 is the correct molecular formula for ammonia, as it matches the known composition.
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