Gas Basics
Ideal Gas Law (Conceptual)
Stoichiometry & Partial Pressures
Chemical Energy Basics (pt 1)
100
What does a barometer measure?
Air pressure
100
Pressure and volume are _______ related.
Inversely
100
What is standard temperature in celsius AND kelvin?
0*C, 273K
100
What is energy due to position or composition?
Potential energy
200
What is the equation for pressure?
force / area
200
What is the R constant equal to in the equation?
0.08206 L*atm/mol*K
200
What is the equation for the molar mass of a gas?
dRT / P
200
What do we call the specific conditions that determine the transfer of energy between work and heat?
Pathway
300
What unit is equal to mmHg?
Torr
300
If volume goes up, pressure goes ____.
Down
300
If you are given # of moles of a gas at STP, what do you multiply it by to get liters?
22.42 L/mol
300
In an exothermic reaction, q is __ 0.

In an enothermic reaction, q is __ 0.

(exo) less than, (endo) greater than
400
What is 1 atm in torr?
760 torr
400
At a constant temp & pressure, the volume of the gas is directly proportional to the ________ of gas
# of moles
400
Give the equation for partial pressure.

Ptotal=P1+P2+P3+...

400
What is a state function whose value is the heat at constant pressure?
Enthalpy (H)
500
Which is false? Gas...


A) uniformly fills any container

B) is easily compressible

C) mixes completely w/other gases

D) exerts pressure on its surroundings

None! They are all true
500
What is it called when the temp reaches 0K?
Absolute zero
500
How do you calculate a mole fraction?
(# of moles of a given compound) / (total # of moles in mixture)
500
What is the energy required to raise the temperature of 1 gram of a substance by 1*C?
Specific heat capacity (S)
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