Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
44 Cards in this Set
- Front
- Back
|
Boyle's law assumes that _____________ is constant.
|
temperature
|
|
|
Charles's law assumes that _____________ is constant.
|
pressure
|
|
|
Gay-Lussac's law assumes that _____________ is constant.
|
volume
|
|
|
What is Gay-Lussac's law?
|
P1/T1=P2/T2
|
|
|
What is Boyle's law?
|
P1V1=P2V2
|
|
|
What is Charles's law?
|
V1/T1=V2/T2
|
|
|
Temperature and volume are _____________ proportional to each other.
|
directly
|
|
|
Temperature and pressure are _____________ proportional to each other.
|
directly
|
|
|
Volume and pressure are _____________ proportional to each other.
|
inversely
|
|
|
What is the combined gas law?
|
P1V1/T1=P2V2/T2
|
|
|
What is the ideal gas law?
|
PV=nRT
|
|
|
The room temperature increases from 20°C to 24°C. What happens to the pressure inside a cylinder of oxygen contained in the room?
|
increases
|
|
|
What happens to the pressure of the gas in an inflated expandable balloon if the temperature is increased?
|
stays the same
|
|
|
An aerosol can of air freshener is sprayed into a room. What happens to the pressure of the gas if its temperature stays the same?
|
decreases
|
|
|
The volume of air in human lungs increases before it is exhaled. What happens to the temperature of the air in the lungs to cause this change, assuming pressure stays constant?
|
increases
|
|
|
A leftover hamburger patty is sealed in a plastic bag and placed in the refrigerator. What happens to the volume of the air in the bag?
|
decreases
|
|
|
What happens to the pressure of a gas in a lightbulb a few minutes after the light is turned on?
|
increases
|
|
|
The variable that stays constant when using the combined gas law is _____________.
|
the amount of gas
|
|
|
The equation for the combined gas law can be used instead of which of the following equations?
a) Boyle's law b) Charles's law c) Gay-Lussac's law d) all of the above |
d
|
|
|
Equal volumes of gases at the same temperature and pressure contain equal numbers of particles. What principle does this express?
|
Avogadro's principle
|
|
|
What is standard temperature and pressure? (STP)
|
0°C/273K; 1.00 atm
|
|
|
What is the molar volume of a gas equal to at STP?
|
22.4L
|
|
|
Define the ideal gas constant, R.
|
R is a constant that relates pressure, volume, amount, and temperature for a gas sample.
|
|
|
What variable is considered in the ideal gas law that is not considered in the combined gas law?
|
n, the # of moles of gas present
|
|
|
True or False: An ideal gas is one whose particles take up space.
|
False
|
|
|
True or False: In the real world, gases consisting of small molecules are the only gases that are truly ideal.
|
False
|
|
|
True or False: Most gases behave like ideal gases at many temperatures and pressures.
|
True
|
|
|
True or False: No gas is truly ideal.
|
True
|
|
|
True or False: No intermolecular attractive forces exist in an ideal gas.
|
True
|
|
|
True or False: Nonpolar gas molecules behave more like ideal gases than do gas molecules that are polar.
|
True
|
|
|
True or False: Real gases deviate most from ideal gas behavior at high pressures and low temperatures.
|
True
|
|
|
True or False: The smaller the gas molecule, the more the gas behaves like an ideal gas.
|
True
|
|
|
True or False: The number of moles of a gas is equal to the mass divided by the molar mass.
|
True
|
|
|
True or False: Density is defined as volume per unit mass.
|
False
|
|
|
True or False: Density is defined as mass per unit volume.
|
True
|
|
|
True or False: To solve for M in the equation M=mRT/PV, the mass and the volume of the gas must be known.
|
True
|
|
|
True or False: According to the equation D=MP/RT, the molar mass of the gas must be known when calculating density.
|
True
|
|
|
What is the constant in the ideal gas law?
|
R
|
|
|
What two laws are used together to form the ideal gas law?
|
The combined gas law, and Avogadro's principle.
|
|
|
The ideal gas law allows you to determine the _____________ when its pressure, temperature, and volume are known.
|
number of moles of a gas
|
|
|
Real gases deviate from behavior predicted for ideal gases because _____________.
|
the particles of a real gas occupy volume and are subject to intermolecular forces.
|
|
|
The coefficients in a balanced chemical equation specify _____________ ratios for gaseous reactants and products.
|
volume
|
|
|
The gas laws can be used along with balanced chemical equations to calculate the _____________ of a gaseous reaction or product in a reaction.
|
amount
|
|
|
An ideal gas is defined as _____________.
|
a gas in which all collisions between atoms or molecules are perfectly elastic and in which there are no intermolecular attractive forces.
|
