Avogadro's hypothesis

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Related to Avogadro's hypothesis: Avogadro's Principle
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  • noun

Synonyms for Avogadro's hypothesis

the principle that equal volumes of all gases (given the same temperature and pressure) contain equal numbers of molecules

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References in periodicals archive ?
Avogadro's hypothesis, that molecules of elements might contain more than one atom of those elements (and the specific claims that molecules such as oxygen, nitrogen, and hydrogen all contain two atoms) was almost ignored at the time, and even when it was resuscitated by Ampere and his followers it took a long time to become orthodoxy.
This is because Avogadro's hypothesis and the other 'multiple rivals' rely on his starting hypotheses for their justification to the same extent, and so their virtue and plausibility are affected by the acceptability of the starting hypotheses to the same extent.
Attending was an Italian chemist, Stanislao Cannizzaro (1826-1910), who, two years before, had come across Avogadro's hypothesis (see 1811), now half a century old.
Since equal volumes of gases are made up of equal numbers of molecules, according to Avogadro's hypothesis (see 1811), and since each oxygen molecule has a weight of 32, then 22.
Since all this was based on Avogadro's hypothesis, the number was called Avogadro's number.