# Lecture 9/10/14

 Question: What is the atmospheric pressure when the height difference is 710 mm? The density of the mercury at 20◦C is 13.595 g/cm3 What is used for measuring atmospheric pressure? Draw it Barometer What is used to measure the pressure of gases other than atmospheric? Draw them (2). Three different kinds of systems: What properties describe the state of the system? ExtensiveIntensive Define extensive property and name some Property is proportional to the amount of material. Energy, electricalcharge, mass, etc. Define intensive property and name some Property does not depend on the amount of material. Density, temperature,etc. Draw and label an example of an isothermal gas expansion. Note if any properties become a function of any other properties P as a function of V - if we change the pressure and always wait long enough until thermal equilibrium between the gas in the syringe and the water in the bath is reached Example 2.1 in the book: the number of oxygen molecules in an alveolus? (r=0.005cm, pO2=14%,P=1atm) Define energy Energy is the ability to do work AuthorAnonymous ID291301 Card SetLecture 9/10/14 DescriptionBME 221 Updated2014-12-11T06:53:44Z Show Answers