'3 kpa' diaporamas de présentation

CHAPTER 10

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I. Physical Properties

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Gases - Chemistry

Gases - Chemistry. Macroscopic vs. Microscopic Representation. Kinetic Molecular Theory of Gases. Gas molecules are in constant motion in random directions. Collisions among molecules are perfectly elastic. Kinetic Molecular Theory of Gases.

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Unit 14

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Chapter 13

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Properties of all gases

Properties of all gases. Chapter 14 with Ch 13 review. WOD are underlined. Properties of all gases. When working with gases, there are 4 properties that must be considered: Gas Properties : Mass, Volume, Pressure, Temperature

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Gases and Liquids

Gases and Liquids. Fluids. Kinetic Molecular Theory. Gases are fluids Gases have low density Gases are highly compressible Gases completely fill a container and exert pressure equally in all direction Gases move faster in higher temperature V=158 ? T MM. Atmosphere is a sea of gases.

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Gases

Gases.

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Gases

Gases.

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The Gas Laws

The Gas Laws. Measuring Pressure. Barometer Manometer. Units: atmosphere, kilopascal, millimeter of mercury, Torr, Pound per square inches. Pressure conversions. 1atm=760mmHg=101.3kpa=14.7psi. Atmospheric pressure (barometer). 1 atm = 101.3 kpa = 760 torr = 14.7 psi =760 mmHg.

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p.337 2. using this you can do stoichiometry problems with gases!

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22.4 L

Moles, volume and density. 22.4 L. Calculate the volume of a given mass of a gaseous substance from its density at a given temperature and pressure. Include: molar volume calculation Solve problems requiring interconversions between moles, mass, volume, and number of particles.

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Pressure and Temperature

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Practice Test

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Ideal Gas Law & Gas Stoichiometry

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Gas Stoichiometry

Gas Stoichiometry. Moles ? Liters of a Gas : STP - use 22.4 L/mol Non-STP - use ideal gas law Non- STP Given liters of gas? start with ideal gas law Looking for liters of gas? start with stoichiometry conversion. Courtesy Christy Johannesson www.nisd.net/communicationsarts/pages/chem.

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Converting Units of Pressure

Converting Units of Pressure. In order to convert pressure you will need to know the following conversion factors. 1 ATM = 760 mm Hg = 101.3 kPa = 101,300 pa. Using these values you can create a total of 6 different conversion factors.

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How to Measure Pressure

Aneroid Barometer. How to Measure Pressure. Barometer measures atmospheric pressure. vacuum. P Hg. P atm. Courtesy Christy Johannesson www.nisd.net/communicationsarts/pages/chem. vacuum. mercury (Hg). air pressure. barometer : device to measure air pressure. Empty space (a vacuum).

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The Combined Gas Law

The Combined Gas Law. When measured at STP, a quantity of gas has a volume of 500 dm 3 . What volume will it occupy at 0 o C and 93.3 kPa?. (101.3 kPa) x (500 dm 3 ) = (93.3 kPa) x (V 2 ). 273 K. 273 K. (101.3) x (500) = (93.3) x (V 2 ). P 1 = 101.3 kPa T 1 = 273 K

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