Kinetic Molecular Theory
The model that described the behavior of gases in terms of particle motion
KMT
Gases have ______ density
Low
This instrument measure atmospheric pressure
Barometer
If pressure increases, what happens to volume if the temperature remains constant.
+100 if you name the type of relationship pressure and volume have in this example
Decreases
In a car tire, the initial temperature and pressure are 3 atm and 25 o C. At what temperature will the gas in the tire have a pressure of 3.45 atm?
(Law _______________________)
259.13 K
Charles
Particles are not ________ or ___________ by each other
Attracted or Repelled
________ reduce the volume and _______ increases the volume
Compress and Expand
What is pressure?
Force exerted on an object per unit area
if volume increases, what happens to the temperature if pressure is constant?
+100 if you name the relationship
increases
A sample of gas at 506 K increases to 601 K and 170 L, what is the original volume?
(Law _______________________)
143.13 L
Gay-Lussacs
Gas particles move in constant _______ motion
random
The movement of one substance through another
+100 if you name an example (other than the one in your notes)
Diffusion
What is the standard temperature and pressure of a gas?
1.00 ATM and 0 degrees C
if temperature increases, what happens to pressure if volume is constant?
increases
If a gas at 123 atm and 105 K has a volume of 46.5 L, how many moles of gas are there?
Hint: need an R value
(Law _______________________)
663.48 moles
A measure of the average kinetic energy of a substance
Temperature
When gases diffuse through a tiny hole in a container
+100 if you name an example (other than the one in your notes)
Effusion
A temperature scale designed so that zero degrees is defined as absolute zero
Kelvin
If the conditions are at STP, which gas law or principle would you use to solve?
For example, What is the volume of 1.2 moles of CO2 at STP. DO not solve
Avogadro's Principle
A gas is stored in a 800 mL tank at 155 kPa and 21 o C. The gas is moved to another tank with a volume of 700 mL at 25 o C. What is the pressure of the gas in the second tank?
(Law _______________________)
179.55 kPa
Combined Gas Law
What causes pressure in an aerosol can or basketball?
Particles colliding with other particles and the walls of the container
Gases do not have a definite _______ and _______
shape and volume
One mole of gas =________ atoms
6.02 x 1023 atoms
What variable is held constant in
Boyle’s Law ____________
Charles’s Law _______________
Gay Lussac’s Law________________
Temp
Pressure
Volume
What is the mass of 19.08 L of ammonia gas at STP?
MM= 17.03
(Law _______________________)
14.51 g
Convert 5 kg of Cesium (Cs) to mL
842,675.5 mL