CHEM 1&2 Lab Manual & worksheets pg 129

CHEM 1&2 Lab Manual & worksheets pg 129 -...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Experiment 10: Gas Laws General Chemistry I and II Lab Manual Dakota State University Page 129 of 232 rush out of the lungs in order to equilibrate the pressure. How quickly the air will rush through the airways is a function of the radius of those passages and the pressure difference between the two ends. This is Poiseuille’s Law. Poiseuille determined empirically in 1840 that the mass of air that will flow through a tube per unit time can be determined by Here, Q is the mass of air that can flow through a tube per unit time (such as, for instance, g/sec), p is the difference in pressure between one end of the tube and the other (without a pressure difference, there would be no flow), ν is the viscosity of the air (the higher the viscosity, the greater the resistance to flow; for instance, water has a low viscosity, honey has a high viscosity), l is the length of the tube, and r is the radius of the tube. The mass of a gas is related to the number of moles of gas through the average molecular weight of the gas, n=Q/M, where n is the
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/27/2012 for the course CHM 2045 taught by Professor Josephwalter during the Fall '11 term at Dakota State.

Ask a homework question - tutors are online