# Chapter 1

Chapter 11 Lecture Basic Chemistry Fourth Edition Chapter 11 Gases 11.2 Gas Pressure Learning Goal Describe the units of

measurement used for pressure, and change from one unit to another. 2014 Pearson Education, Inc. Gas Pressure When billions of gas particles collide with the walls of a container, they exert pressure, which is defined as force acting on a certain area. 2014 Pearson Education, Inc.

Atmospheric Pressure Atmospheric pressure can be measured using a barometer. 2014 Pearson Education, Inc. Measuring Gas Pressure, Units One atmosphere (atm) is defined as exactly 760 mmHg.

1 atm = 760 mmHg = 760 torr (exact) 1 mmHg = 1 torr (exact) In SI units, pressure is measured in pascals (Pa); 1 atm = 1.01325 105 Pa = 101.325 kPa 2014 Pearson Education, Inc. Measuring Gas Pressure, Units 2014 Pearson Education, Inc.

Altitude and Atmospheric Pressure Atmospheric pressure changes with altitude and weather. Location Altitude Atmospheric (km) Pressure (mmHg) Sea Level 0.00

760 Los Angeles 0.09 752 Mount

Whitney 4.50 440 2014 Pearson Education, Inc. The atmospheric pressure decreases as the altitude increases.

Learning Check What is 475 mmHg expressed in atm? A. 475 atm B. 0.625 atm C. 3.61 105 atm 2014 Pearson Education, Inc. Solution What is 475 mmHg expressed in atm?

B.0.625 atm 2014 Pearson Education, Inc. Learning Check The pressure in a tire is 2.00 atm. What is this pressure in mmHg? A. 2.00 mmHg B. 1520 mmHg C. 22 300 mmHg

2014 Pearson Education, Inc. Solution The pressure in a tire is 2.00 atm. What is this pressure in mmHg? B.1520 mmHg 2014 Pearson Education, Inc.

## Recently Viewed Presentations

• Confessing "witches" adding credibility to earlier charges. 8. Old feuds (disputes within congregation, property disputes) between the accusers and the accused spurring charges of witchcraft. Tituba, a slave from Barbados, makes a witch cake, drawing suspicion on herself. A witch...
• Harvard - long quotations. Block or large quotation . Quotes longer than one sentence should be indented - a line should be left at the beginning and end of the quote to separate it from the rest of the text....
• Enter LEGAL NAME or CORPORATE NAME that coincides with your Federal Tax Id # or if you are a SOLE PROPRIETOR use your SS #. #2. Enter Children's System of Care Services. ... There are federal and state statutes and...
• Webchat. Email. Social media. And we are developing exciting new methods of supporting Career Discovery using: Virtual Reality. Interactive audience response tools. Careers Wales TV - our new interactive streaming service
• Arial Calibri Default Design Chapter 12-Services Key Issue 1 Services (continued) Contemporary Rural Settlements Enclosure Movement Key Issue 2 Threshold of a service Nesting of services and settlements Key Issue 3 Modern World Cities Key Issue 4
• tibia & adjacent medial surface subcutaneous throughout their lengths . ... Four muscles in the anterior compartment of the leg. ... of many of the muscles that move and maintain the position of the upper limbs relative to the trunk....
• Born between 34 to 36 weeks. The earlier the baby is born, the higher the risk of complications. ... Burn energy just to stay warm. Long Term Complications. Cerebral Palsy - movement and muscle tone. Learning - developmentally delayed, learning...
• Cardiff'sapproach. Standards & Ethics Committee has responsibility: "To oversee and monitor the Council's whistleblowing procedures and to consider ethical issues arising" Revised Policy and Procedureapproved by Cabinet in October 2014. Communications plan - posters in all Council buildings and leaflets...