Liquid Nitrogen By: Bryan Barker. Charles’ Law As the temperature of a gas decreases, so does its volume. V 1 /T 1 =V 2 /T 2, where V is in liters, and.

Slides:

Advertisements

Similar presentations

Advertisements

How tightly can I pack wiggling students into a classroom?

Christopher G. Hamaker, Illinois State University, Normal IL

B OYLES & C HARLES L AWS P RACTICE P ROBLEMS. P1V1=P2V2 #1 If I have 7.1 liters of gas in a piston at a pressure of 1.5 atm and compress the gas until.

Gas Laws Mr. Gates Created by Educational Technology Network

Gases Laws Notes. Pressure Pressure- force per unit area caused by particles hitting the walls of a container Barometer- Measures atmospheric pressure.

1 Chapter 6Gases 6.4 Temperature and Volume (Charles’ Law) Copyright © 2005 by Pearson Education, Inc. Publishing as Benjamin Cummings.

Behavior of Gases. Gas particles are in constant motion Collisions of these particles in the air causes pressure Pressure = force per unit of area or.

Phase Changes Melting Vaporization Condensation Freezing Sublimation.

Ideal Gases. Now that we know how gases behave when we manipulate P, V, and T, it’s time to start thinking about how to deal with things like moles and.

Particles have LOTS of energy; moving all around Gases take on the shape and volume of their container. Gases will spread out evenly = diffusion Ruled.

Marker Board Review You should have a marker board, a marker, and a paper towel to erase! Ready??? GO!!!

Gas Behavior Lesson 3, Chapter 2.

What affects the behavior of a gas? u The number of particles present u Volume (the size of the container) u Temperature 2.

Quiz – Get out your notes!!. Quiz (10 questions) 1) Which law would you use if you were given only pressure and volume? 2) Which law would you use if.

The Gas Laws. Pressure Liquid pressure – exerted equally in all directions - swimmers feel an increase in pressure as they go deeper down into the ocean.

1 Partial Pressure Pressure of individual gases in a mixture.

SOLIDS, LIQUIDS, AND GASES

Gases Review. Pressure Conversions kPa = ________atm.

Chapter 7 Lesson 1 Properties of Gases. Chapter Overview Theory vs. Law Properties of Gases Pressure and Temperature Partial Pressures Gas Laws Ideal.

Homework Check (The Ideal Gas Law) 1.If I contain 3 moles of gas in a container with a volume of 60 L at a temperature of 400 K, what is the pressure inside.

Concepts to Rvw Pressure –Stand demo –Sound demo Units of pressure –Pa –mm Hg –torr –atm –psi.

Warm-up R= L atm/mol k  If a gas is compressed…  What happens to the volume?  What happens to the pressure?  What happens to Temperature? 

Gas Laws. Background  The gas laws treat gases as ideal  In ideal gases, each molecule has no volume and there is no attraction between molecules.

Gas Laws and Our Lives Period 5 March When the temp. increase the pressure increases and the and the bullet comes flying out.

MOLAR VOLUME. molar volume What is the volume of a gas at STP, if it contains 10.4 moles? What is the volume of carbon dioxide gas (STP) if the.

Temperature Scales Fahrenheit, Celsius & Kelvin. Temperature  Is a measure of how hot or cold an object is compared to another object.  Indicates that.

Basic Chemistry Copyright © 2011 Pearson Education, Inc. 1 Chapter 11 Gases 11.4 Temperature and Volume (Charles’s Law) As the gas in the hot-air balloon.

Water phase changes constant Temperature remains __________

Chapter 12 – Review The Behavior of Gases

States of Matter. 2.1 Three States of Matter ________________- These are physical forms in which a substance can exist. Let’s use water as an example.

Temperature and Heat. Definition of Temperature  Temperature is proportional to the kinetic energy of atoms and molecules.  For gases, we have translational.

Units of Chapter 15 Atomic Theory of Matter Temperature and Thermometers Thermal Equilibrium and the Zeroth Law of Thermodynamics Thermal Expansion Thermal.

1 2 Welcome to the World of Science with Air Products.

Temperature Thermometers Thermal Expansion

Warm-up 2H 2 (g) + O 2 (g)  2H 2 O (g) How many liters of water will be produced from 300 grams of Oxygen gas if Hydrogen gas is in excess? (at STP)

Physical Science Notes Phases of Matter. Matter is everything you can touch All matter can exist in 1 of 4 different phases or states. The 4 phases are:

Gas Laws. 2 Kinetic – Molecular Theory 1. Particle size – Gases contain _________________________ ______________________________________ – Because so.

Gases Makeup Bellwork Pick which days of bellwork you would like to complete REMEMBER: each day is worth 20 points so 5 days is worth 100 points.

Chapter 14 Gas Laws Kinetic Molecular Theory – Assumes gas particles are small particles w/lots of space between them – No attractive forces; particles.

Solids, Liquids, and Gases  deposition sublimation   freezing melting  boiling condensing.

Gay-Lussac’s LawGay-Lussac’s Law  Pressure and temperature relationship  Pressure results from molecular collisions  Pressure of gas is DIRECTLY proportional.

Ch. 14 The Behavior of Gases PROPERTIES OF GASES.

Gas Laws Review. A sample of carbon dioxide occupies a volume of 3.5 L at 125 kPa pressure. What pressure would the gas exert if the volume was lowered.

Agenda Demonstration  Water Vapor in a Can Demonstration Discussion Introduction to Gasses Ideal Gas Laws.

Aim: What is the difference between the ideal and real gases? Do now: 1. A certain gas at STP has a volume of 5 liters. What is the new volume of the given.

1. 2 Partial Pressure Pressure of individual gases in a mixture.

Chapter 13 and 14. Essential Question: What are three units for pressure and how do you convert units? Warm-Up: What are the three states of matter? List.

Gas Laws. Boyle’s Law  Shows the relationship between volume and pressure  Temperature and amount of gas is held constant 

 Grab a pink HW check from on top of the projector  Take out your homework from last night – I will check it, and then we will begin class by going over.

States of Matter. 1. Solid 2. Liquid 3. Gas 4. Plasma.

GAS – state of matter that has NO DEFINITE VOLUME and NO DEFINITE SHAPE. Fig. 5: Arrangement of Particles in a Gas From :

Temperature Water Boil Freeze Celsius 100 o C 0 o C Fahren. 212 o F 32 o F 0 o F Kelvins K K 0 K Not degrees K What 0 o F and 0 K mean Formulas.

Avogadro’s Principle: The partial pressures, volumes and #moles of gases in the same container and at the same temperature are proportional to their reaction.

Due: Behavior of Gases WS Today: Gas Laws Boyles, Charles, Combined, Dalton HW Gas Laws Practice Problems.

Marker Board Review You should have a marker board, a marker, and a paper towel to erase! Ready??? GO!!!

Take out a new sheet of paper and label it: Gas Law Problems #2

Clicker #1 Is the pressure in the larger balloon greater than, less than, or equal to the smaller balloon? A) greater than the smaller balloon B) less.

Clicker #1 Is the pressure in the larger balloon greater than, less than, or equal to the smaller balloon? A) greater than the smaller balloon B) less.

Clicker #1 Is the pressure in the larger balloon greater than, less than, or equal to the smaller balloon? A) greater than the smaller balloon B) less.

Clicker #1 Is the pressure in the larger balloon greater than, less than, or equal to the smaller balloon? A) greater than the smaller balloon B) less.

Warm-up If I have 4.00 moles of a gas at a pressure of 5.60 atm and a volume of 12.0 liters, what is the temperature in kelvin?

Clicker #1 Is the pressure in the larger balloon greater than, less than, or about equal to the smaller balloon? A) greater than the smaller balloon B) less.

Clicker #1 Is the pressure in the larger balloon greater than, less than, or equal to the smaller balloon? A) greater than the smaller balloon B) less.

Combined Gas Law and Dalton’s Partial Pressure Law

Presentation transcript:

Liquid Nitrogen By: Bryan Barker

Charles’ Law As the temperature of a gas decreases, so does its volume. V 1 /T 1 =V 2 /T 2, where V is in liters, and T is in Kelvin. However, this law only applies under ideal conditions, and the gases inside the balloon will not be at these conditions at such low temperatures because the carbon dioxide will solidify at K, the oxygen will liquefy at 90.2 K, and the nitrogen will liquefy at 77 K.

Charles’ Law When the balloon is removed from the liquid nitrogen, the carbon dioxide, oxygen, and nitrogen will become gaseous again, making the conditions ideal and expanding the balloon.

Shattering of a Rose At 77 K, the water inside the rose will freeze and expand, breaking the cells of the rose and making it brittle. Water freezes at 273 K, so this is no problem for liquid nitrogen.

Leidenfrost Effect The liquid nitrogen is at 77 K. My hand is at 310 K. The temperature difference is 233 K, much greater than the boiling point of liquid nitrogen. This effect will not last forever, so I can only do this for a short period of time.