AVOGADRO'S GAS LAW

AMEDEO AVOGADRO

• Born Aug, 9 1776
• Born of a noble family
• Lived in Italy
• Inspired by Galileo and Sir Isaac Newton

FACTS

• He taught at the university of Turin
• He wrote newspaper articles about his discoveries
• He died on July 9 1858

Discovered in 1811..."equal volumes of gases at the same temperature and pressure contain the same number of molecules regardless of their chemical makeup. 6.022 X 10^23 is the number of molecules of any gas present in a volume of 22.41 L

EVERYDAY APPLICATION

• Lungs expand as they fill with air. Exhaling decreases the volume of the lungs.
• Wet air is less dense than moist air.
• A flat tire takes up less space than a filled one
• A balloon filled with helium is lighter than one filled with air

A balloon filled with helium is lighter than one filled with air

The number of molecules in one mole is Avogadro's number, NA, or 3.022*10^23

Untitled Slide

5.00 L of gas contains 0.965 mol. If the amount of gas is increased to 1.80 mol, what new volume will result (at an unchanged temperature and pressure)?

(5.00 L) (1.80 mol) = (x) (0.965 mol)


X=9.326

SOURCES

• http://www.chemheritage.org/discover/online-resources/chemistry-in-history/...
• http://www.chemistry.co.nz/avogadro.htm