[michellemfry]

Avagadro's Hypothesis states that given one cubic centimeter of any gas, it contains, under standard conditions, the same number of molecules, which is approximately 27 million million millions(Loschmidt's Number). I must admit, I've never heard of Mr. Loschmidt.

Avagadro's Number states that for every one gram of substance, there exists 6.023 x 10^23 atoms.

Be careful not to mistake Avagadro's Hypothesis with Avagadro's Number.

[Guille]

I also know nothing about the other guy. But if it's to do with atomic or sub-atomic chemistry, it must be in the last 100 years definatelly. There should also be a correspondant Loschmitd hypothesis.

[dleviwing]

Originally Posted by michellemfry Avagadro's Hypothesis states that given one cubic centimeter of any gas, it contains, under standard conditions, the same number of molecules, which is approximately 27 million million millions(Loschmidt's Number). I must admit, I've never heard of Mr. Loschmidt. Avagadro's Number states that for every one gram of substance, there exists 6.023 x 10^23 atoms. Be careful not to mistake Avagadro's Hypothesis with Avagadro's Number.

Check the facts at:

http://en.wikipedia.org/wiki/Avogadro%27s_number.
http://gemini.tntech.edu/~tfurtsch/scihist/avogadro.htm

[michellemfry]

Those two sites are excellent last words on Loschmidt's and Avagadro's Numbers. Thank you kindly, Dr....