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# Gas

### Characteristics of Gas

vapors the elements (that are usually solid or liquid) that exist in the gaseous state
What does the volume of gas equal? volume of gas equals volume of its container
What happens when gases are mix together gases form homogenous mixtures with each other regardless of the identities or properties of the component gases
What are the measured properties of a gas? temperature, volume, pressure
Pressure = ? Force/Area
Force = ? mass * acceleration
gravity exerts an acceleration of ? 9.8 m/s^2
1 Newton =? kg*m/s^2
What is the SI unit of pressure? Nm^ -2 (called a pascal (Pa) )
1 Pa (pascal) = ? 1 N (newton)/m^2
The atmospheric pressure at sea level is about 100 k Pa
barometer measures atmospheric pressure
atmospheric pressure =? 1.01325 * 10^5 Pa
Other units of pressure: 1atm = 760mmHg = 760torr = 1.01325 * 10^5 Pa = 101.325 kPa
1 torr = ? 1 mm Hg
manometer (contains mercury) used to measure the pressure of an enclosed gas.
Gas laws equations that tells the relationship among P, T, V, and n
Pressure -Volume Relationship: Boyle's Law Volume of gas is inversely proportional to the pressure (as pressure decrease, volume increase, and vice versa)
PV = ? constant (the value of the constant depends on the T and the amount of gas in the sample)
Temperature - Volume (blank)
0 degree K =? -273.15 C
Volume/Temp. =? constant (value of constant depends on the pressure and amount of gas)
The Quantity - Volume Relationship: Avogadro's Law volume of gas is proportional to the # of moles of the gas
Law of Combining Volumes (discovered by Lussac) (blank)
1 mole of any gas (6.02 * 10^23 gas molecules) at atm. pressure and 0 degree C occupies (blank) liter volume 22.4
V = ? constant * n
Created by: Tiffastic