allerySodium chloride has sodium and chlorine in the mass ratio:
A35.5:23
B23:35.5
C32:35.5
D23:53.5
Answer & Solution
Correct answer: B. 23:35.5
1. Every sample of a compound has the same composition.
2. For NaCl the two masses are fixed against each other.
3. The mass ratio of sodium to chlorine is 23:35.5.
4. So the answer is 23:35.5.
_Source: syllabus Science, Ch 9 'Atomic Foundations of Matter'_
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