Properties of Gases

Properties of Gases

Behavior of Gases Unit 2 Exploration 1.3 Units of Pressure There are various units of pressure that are commonly used (mmHg, kPa, atm)

1 atm = atmospheric pressure at sea level The following are all equal to each other: 1 atm = 760mmHg = 101.3kPa Learning Check

Does pressure increase or decrease as you go up a mountain? Why? Answer: Decreases. As you go up a mountain, the number of air molecules decreases, so there is less stuff pushing down on you. Amount of Gas at Standard Temperature and Pressure (STP)

- STP is 1 atm and 273.15K (0C) ***At STP, 1 mol of ANY gas has a volume of 22.4L*** AT STP!!! Molar Mass Molar mass is the mass of 1 mol in a substance. UNITS are g/mol

On the periodic table, the BOTTOM NUMBER in a periodic square. Example: Chlorine has a molar mass of 35.5 g/mol Pg. 74, PREDICT with your partner Kinetic Molecular Theory To summarize the lengthy explanation in the textbook, the 5

main points are as follows: 1- Gas particles are in constant motion. 2- Gas is mostly empty space. 3- Gas particles DO NOT attract/repel each other. 4- Gas particles collisions result in NO LOSS of kinetic energy. 5- Gas temperature is measuring the average kinetic

energy of the gas. What does Kinetic Molecular Theory mean??? For now, all it means is that we can assume gases follow the 5 points of Kinetic Molecular Theory when in reality they act slightly differently.

In other words, most of the time gases act IDEALLY which brings us to the Ideal Gas Law. Say Pivnert Congratulations! You have now memorized the ideal gas law. PV = nRT; here is what each variable means P = pressure; units can be atm, mmHg, or pKa

V = volume; units are L n = # of mols R = ideal gas constant; value and unit DEPENDS ON PRESSURES UNIT T = temperature; ALWAYS IN KELVIN (if C your answer will be wrong) Ideal Gas Constant R (on board)

Depending on your unit of pressure, the R value changes. UNITS If using atm for pressure, R = 0.08205 If using kPa for pressure, R = 8.314 If using mmHg for pressure, R = 62.36

Ideal Gas Worksheet, #1 together Crash Course https://www.youtube.com/watch?v=8SRAkXMu3d0

Recently Viewed Presentations

  • CREATION - Omaha Apologetics

    CREATION - Omaha Apologetics

    Genesis is clearer than Revelation. Genesis is a book about historical events which have already happened, and is referenced all over the Bible. Revelation is mainly symbolic and describes some events which are yet to happen. Thus the OPC should...
  • Outline of Thesis

    Outline of Thesis

    Ethics Mon 3/9/11 Jean-Francois Van Huele Any questions about 416? Learning Objectives for 416 Wed 3/9/11 Homework submissions? Interviews?
  • Ownership of intellectual and creative works

    Ownership of intellectual and creative works

    Don't just thesaurus in new words or move things around. ... Agency/Sponsor. Who should be an author? Substantial contributions . YES—Forming hypotheses or theses, designing the study, conducting or interpreting the results, writing the paper.
  • Alliteration Reading Skills Alliteration is a form of

    Alliteration Reading Skills Alliteration is a form of

    Alliteration Reading Skills Alliteration is a form of figurative language and is a stylistic device in which a number of words - having the same first consonant sound - occur close together in a series. Some say it's a tongue...
  • PUB 3000 CHAPTER 3.15 Medical Emergencies and First

    PUB 3000 CHAPTER 3.15 Medical Emergencies and First

    Non-Medical First Aid Kit Available on eBuy Product Description: Laboratory First Aid Kit, North Safety Products Supplier: North Safety Designed for: Use in classrooms and research or clinical laboratories, this kit contains all of the components necessary to treat common...
  • URBAN STRUCTURE MODELS - WordPress.com

    URBAN STRUCTURE MODELS - WordPress.com

    All of the urban structure models start with the CBD in the center of the city. CONCENTRIC ZONE MODEL. ... Geographers observed that there were urban land use zones based on transportation routes, such as roads, canals, and railroads. THE...
  • CATHOLIC SOCIAL TEACHING - Covenant of One

    CATHOLIC SOCIAL TEACHING - Covenant of One

    Implementing Social Teaching: The Pastoral Cycle. To move from understanding the teaching to implementing the teaching, we need to: SEE. What is happening? Examine the problem. JUDGE. Analyse why it is happening. Who/what is causing it? REFLECT. What does CST...
  • EDMS Gradebook: a PADI Application Larry Hamel CodeGuild,

    EDMS Gradebook: a PADI Application Larry Hamel CodeGuild,

    EDMS Gradebook: a PADI Application Larry Hamel CodeGuild, Inc. AERA April 2005 EDMS Gradebook Purpose Gradebook combines assessment specification with student scores, and employs a scoring engine to finally display estimates of student proficiency Gradebook Purpose (cont.) Gradebook keeps track...