2. The proportion of elements in a compound
a. varies widely
b. varies from source to source
c. varies only a little
d. does not vary
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Answer:
d) does not vary
Explanation:
The proportion of elements in a particular compound are always in a constant ratio. For example, the ratio of Hydrogen to oxygen in water is 2:1 and of carbon to hydrogen in methane is 1:4.
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