The atomic mass of sulphur is 32 u, and sulphur exists as S₈ molecules. What is the molecular mass of sulphur?
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A.
64 u
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B.
32 u
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C.
256 u
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D.
128 u
Correct Answer:
C. 256 u
Explanation:
The molecular mass of a substance is determined by multiplying the atomic mass of its constituent element by the number of atoms present in its molecular form. In this case, sulphur has an atomic mass of 32 units and exists as an octa-atomic molecule (S8). Therefore, the molecular mass is calculated by multiplying 32 u by 8, which equals 256 u.
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