Avagadro's Number: How He Determined 6.022E23 Atoms in 12g Carbon

  • Thread starter Thread starter harp AP 2010
  • Start date Start date
AI Thread Summary
The discussion centers on the determination of Avogadro's number, 6.022E23, which represents the number of atoms in 12 grams of carbon. While the number is named after Amedeo Avogadro, he did not calculate this value himself; his work established that atoms combine in whole numbers. The actual determination of Avogadro's number occurred about a century later, with significant contributions from Jean Perrin, who received the Nobel Prize in the 1920s for his work in this area. Various methods have been employed to calculate the Avogadro constant, reflecting advancements in scientific techniques over time.
harp AP 2010
Messages
30
Reaction score
0
How did he determine that there were 6.022E23 atoms in 12g of carbon?
 
Chemistry news on Phys.org
He didn't - it's named after him. He did work that confirmed atoms combined in whole numbers but the value wasn't found until 100 years later
 
So how was it figured out, and by who?
 
Thread 'How to make Sodium Chlorate by Electrolysis of salt water?'

Thread 'How to make Sodium Chlorate by Electrolysis of salt water?'

I have a power supply for electrolysis of salt water brine, variable 3v to 6v up to 30 amps. Cathode is stainless steel, anode is carbon rods. Carbon rod surface area 42" sq. the Stainless steel cathode should be 21" sq. Salt is pure 100% salt dissolved into distilled water. I have been making saturated salt wrong. Today I learn saturated salt is, dissolve pure salt into 150°f water cool to 100°f pour into the 2 gallon brine tank. I find conflicting information about brine tank...
View full post »

Thread 'Ruthenium-Iridium compound with catalytic effects'

Engineers slash iridium use in electrolyzer catalyst by 80%, boosting path to affordable green hydrogen https://news.rice.edu/news/2025/engineers-slash-iridium-use-electrolyzer-catalyst-80-boosting-path-affordable-green Ruthenium is also fairly expensive (a year ago it was about $490/ troy oz, but has nearly doubled in price over the past year, now about $910/ troy oz). I tracks prices of Pt, Pd, Ru, Ir and Ru. Of the 5 metals, rhodium (Rh) is the most expensive. A year ago, Rh and Ir...
View full post »

Similar threads

How count the carbons in 2,3,7,8-Tetrachlorodibenzo-p-dioxin?
Replies
1
Views
1K
Mole Concept: 1.008g H & 12g C = Avogadro's # Atoms
Replies
4
Views
3K
Hybridization of atoms in heterocyclic compounds
Replies
6
Views
2K
Carbon atom larger than a water molecule? Measuring a molecule's size?
Replies
4
Views
6K
Non-Flammable carbon deposit cleaner
Replies
5
Views
2K
Calculating Volume of 12g Carbon Cube
Replies
4
Views
1K
Could another atom be used as the standard for amu?
Replies
6
Views
2K
What are the Oxidation States of Carbon in Sebacic Acid and Propylene Glycol?
Replies
5
Views
2K
Why wasn't fluorine used as a standard for atomic mass?
Replies
6
Views
3K
How amu is equal to Molar Mass Must S33
Replies
6
Views
38K

Hot Threads

Recent Insights

Back
Top