Thursday, January 20, 2011

Volume and Number of Moles

Avogadro discovered the relationship between the number of atoms/molecules of a gas and the volume occupied by the gas.  Of course, as more gas particles are added, the volume increases.  By experiment, chemists have been able to determine the volume occupied by one mole of any gaseous substance: 22.4 L at STP.  This is called the molar volume

HW: Journal entry (assigned 1/19/11); Unit 8 Worksheet 2.

Unit 8 Worksheet 2 Answers:
(assume all zeros to be significant)
1. 11.2 L of O2
2. 3.50 L + 4.00 L + 2.54 L + 5.55 L = 15.59 L
3. 0.00995 mol H2
4. 1.06 L of CO2
5. 422 mL of Cl2
6. 3.46 g P4
7. 4.96 L of NH3
8. 27.1 L of H2