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 the element by the number of atoms present in its molecular formula. In this case, sulphur has an atomic mass of 32 u and exists as octaatomic molecules (S8). Therefore, the molecular mass is calculated as 8 multiplied by 32 u, which equals 256 u.
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