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Chemistry CBSE Live product
Class 9 (2026-27)
Atomic Foundations of Matter
Characteristics and Mass of Ionic & Covalent Compounds
5.
Observation and inference - molecular mass
Question:
1
m.
Identify
the
correct
answer for the given obeservation from the following options:
Observation:
Two different compounds, ethanol \((C_{2}H_{5}OH)\) and nitrogen dioxide \((NO_{2})\), both have a molecular mass of \(46\) \( u\).
Inference:
Both compounds contain the same number of atoms
Different compounds can have the same molecular mass
Both compounds have identical molecular formulas
Both compounds have identical chemical properties
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