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Notes KMT and Units.notebook
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Its a Gas!
Draw a solid, liquid and gas molecule sample
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Kinetic Molecular Theory of Gases
* Based on the idea that particles of matter are always in _________.
*Theory is used to explain the properties of gases in terms of the ______ of particles and the ______ that act between them
*The Theory provides a model for an ideal gas, a hypothetical gas that fits all of the assumptions.
1. Gases are made of _____ particles with a definite mass
2. The volume of a gas sample is much greater than the actual volume of the particles ~ negligible, near _____
3. Gas particles are in constant rapid straight line, random motion, no attraction between particles.
4. Collisions are ________ (no loss of K.E.)
5. The K.E. of gas particles is proportional to their Kelvin Temp.
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diffusion : process by which gas particles spread out spontaneously and mix with other gases.
* _________ concentration to ________ concentration
effusion : process by which gas particles pass through a tiny opening.
* molecules of _______mass effuse faster.
Variables affecting gases1. Amount of gas (n)
2. Volume (V)
3. Temperature (T)
4. Pressure (P)
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Standard Temperature and Pressure
Standard Temperature
0o C or 273 K
Standard Pressure
1atm =101325 Pa = 101.3 kPa = 760mm Hg =
760 torr = 14.7 psi
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Dalton's Law of Partial Pressure
The total pressure of a mixture of gases is equal to the sum of the pressure of all of the gases in the mixture.
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Ideal gas law constant
Ideal Gas Law
Combined Gas LawStandard Values
A constant
An ideal constant
PV = nRT
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Density ! Ideal Gas Law!
Together at Last
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