How did Avogadro figure out his constant? (6.022 x 10 to the 23rd)?

Question

If at all possible, please add "how" he got that number and the math to it also if possible. Thanks.

Answer 1

Please go to this website for a full explanation. It doesn't make sense for me to restate what it says in the article.

http://gemini.tntech.edu/~tfurtsch/scihist/avogadro.htm

Answer 2

Avogadro's number is named after the early nineteenth century Italian scientist Amedeo Avogadro. It appears that Jean Baptiste Perrin was the first to name it. Perrin called it "Avogadro's constant" and it is still sometimes known by that name. The numerical value was first estimated by Johann Josef Loschmidt in 1865 using the kinetic gas theory. In German-speaking countries, the number may still be referred to as Loschmidt's number.
In the nineteenth century physicists measured the mass of one atom of hydrogen to be about 1/(6.023x1023) grams in an attempt to measure the number of ideal gas molecules would fit in 1 cubic centimeter at STP ... which is related to Avogadro's number via the ideal gas law.

Answer 3

Avogadro's number is defined as the number of carbon atoms in exactly 12 grams of pure Carbon12. He did not mathematically figure out the number, rather he used techniques like mass spectrometry to count the atoms.