Originally posted by cpkid6107experimental methods have squeezed out a bit more:
umm in high school (where i am right now) we say it is 6.02X10^23 so yeah i guess your right w/ 6.022 but i didnt know it had any more sig figs...
"Today's best experimental value of 6.022 141 99 E23 mol-1 atoms per mol (obtained from NIST web site) is the best average for measurements using the best methods available. The experiments are often very difficult to carry out. That the number today has 8 significant figures is a testament to the quality of modern experimental methods." (http://gemini.tntech.edu/~tfurtsch/scihist/avogadro.htm)
in friendship,
prad