Chapter 12 Test Flashcards
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ptotal= ∑Pi
Dalton’s Law
Which gas law explains why a can of hairspray will explode if thrown into a fire?
Gay-Lussac’s Law
A gas law that behaves according to the kinetic-molecular theory is a(n) _________ gas.
Ideal
Which gas law focuses on the relationship between pressure and volume?
Boyle’s Law
The gas law that states that the rate of effusion of a gas is inversely related to its molar mass?
Graham’s Law
The gas law that focuses on the relationship between volume and temperature is _________________.
Charles’s Law
What law states that the total pressure of a mixture of gases equals the sum of their partial pressures?
Dalton’s Law
Which law explains the fact that air pressure in car tires is higher after the tire heats up?
Gay-Lussac’s Law
According to Avogadro’s Law, how many ideal gas particles are in a volume of 22.4 L?
1 Mol
The volume occupied by Avogadro’s number of molecules of gas at STP, 22.4L, is known as the gas’s ____________ volume.
Molar
Celsius temperatures that are used in gas law problems must be ________________________________________.
Converted into Kelvins
The uniform mixing and spreading of gases over time is known as ___________.
Diffusion
What are the standard temperature (In Celsius) and pressure (kPa)
0°C and 101.3 kPa
When a gas moves through a tiny opening into an evacuated chamber.
Effusion
Uniform spreading of gases over time.
Diffusion
Why are chemists unable to to obtain accurate measurements of a gas that is collected over water?
Some water vapor enters the gas sample. Wet gas. (POV: The chemists rn) ( ﾉ ﾟｰﾟ)ﾉ
What is the relationship between temperature and volume if pressure is constant?
Volume decreases and temperature decreases.
What does each letter stand for in this equation?
PV=nRT
Pressure, Volume, Moles, Universal Constant, and Temperature
What are the five parts of the kinetic-molecular theory?
- Collisions exchange energy w/o losing energy.
- Gases move rapidly.
- They are tiny
- Move randomly
- There are great distances between them. (Insert* Hey There Delilah)
Molar volume is the __________ for any ideal gas at STP.
Same
Only _________ gases behave according to the kinetic-molecular theory.
Ideal
When collecting a has by water displacement, we must remember to adjust for __________ pressure.
Vapor
What is the relationship between volume and pressure if temperature is constant?
Volume decreases and pressure increases. (Inverse)
When a gas quickly spreads out to fill a low-pressure region, _________________ is being demonstrated.
Expansibility
Average force exerted per unit of area when particles collide against a boundary.
Pressure
You need to know how to use the gas laws in mathematic expressions.
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