Question -
What is the molecular mass of the compound SO2?
Options:
A .  16 u
B .  48 u
C .  32 u
D .  64 u
Answer: Option D : D Molecular mass of a substanceis the sum of the atomic masses of its constituent atoms. Molecular mass of SO2 =Atomic mass of S+ 2×(Atomic mass of O) =32+(2×16) = 64 u.
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