a rigid metal tank contains oxygen gas. which of the following applies to the gas in the tank when additional oxygen is added at constant temperature?
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apchem gases Flashcards
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apchem gases
a real gas will behave most like an ideal gas under conditions of
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B. high temp and low pressure
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density of 4.2 at 127' 3 atm
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B. 46.0
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1/25 Created by sherman326
Terms in this set (25)
a real gas will behave most like an ideal gas under conditions of
B. high temp and low pressure
density of 4.2 at 127' 3 atm
B. 46.0
which of following would have a higher rate of effusion than c2h6
d. CH4
2 metals of equal mass with different heat capacities are subjected to the same amount of heat. which undergoes the smallest change in temp
the metal with the high heat capacity
the barometer image c. 133 mmhg
A rigid metal tank contains oxygen gas. Which of the following applies to the gas in the tank when additional oxygen is added at constant temperature?
C. The average speed of the gas molecules remains the same.
Which of the following gases deviates most from ideal behavior?
SO2 Ne CH4 N2 H2 A. SO2
27g sample of unknown is burned to form 88 g co2 and 27g h2o. what is possible molecular formula
c4h6
9g al is added what is the volume
b. 11.2 liters
gases w and x react. 1.6atm and 1.2 atm. W decreased to 1.0 atm
a. 0.2 atm
nh4no3 a 0.03 mol sample
a. 3atm
equal numbers of moles he, ar, ne placed in vessal at room temp. (effused)
a. PHE-PNE-PAr
0.01 mol of oxygen gas 15' c
.201atm 2K + 2h2o d. 4.48 liters
Equal masses of three different ideal Gas, X, Y, and Z, are mixed in a sealed rigid container. If the temperature of the system remains constant, which of the following statements about the partial pressure of gas X is correct?
(C) It depends on the relative molecular masses of X, Y, and Z.
Two flexible containers for Gas are at the same temperature and pressure. One holds 0.50 gram of hydrogen and the other holds 8.0 grams of oxygen. Which of the following statements regarding these gas samples is FALSE?
(E) The average speed of the hydrogen molecules is the same as the average speed of the oxygen molecules.
3 Ag(s) + 4 HNO3 <===> 3 AgNO3 + NO(g) + 2 H2O
The reaction of silver metal and dilute nitric acid proceeds according to the equation above. If 0.10 mole of powdered silver is added to 10. milliliters of 6.0-molar nitric acid, the number of moles of NO gas that can be formed is
(A) 0.015 mole
A compound is heated to produce a gas whose molecular weight is to be determined. The gas is collected by displacing water in a water-filled flask inverted in a trough of water. Which of the following is necessary to calculate the molecular weight of the gas, but does NOT need to be measured during the experiment?
(C) Vapor pressure of the water
When the actual gas volume is greater than the volume predicted by the ideal gas law, the explanation lies in the fact that the ideal gas law does NOT include a factor for molecular.
(A) volume
A sample of argon gas is sealed in
a container. The volume of the
container is doubled. If the
pressure remains constant, what
happens to the absolute
temperature? c. It is doubled
Two balloons are at the same
temperature and pressure. One
contains 14 g of nitrogen and the
other contains 20.0 g of argon.
Which statement is FALSE?
b. The average speed of the
nitrogen molecules is the same
as the average speed of the
argon molecules.
The true volume of a particular real
gas is larger than that calculated
from the ideal gas equation. This
occurs because the ideal gas equation does NOT correct for the:
c. volume of the molecules
A sample of oxygen gas with a
volume of 8.00 L at 127o
C and 775
mmHg is heated until it expands to
a volume of 20.00 L. Determine the
final temperature of the oxygen gas,
if the pressure remains constant.
a. 727o
Determine the formula for a
gaseous silane (SinH2n+2) if it has a
density of 5.47 g/L at 0o
C and 1.00 atm d. Si4H10 ... ...
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A rigid metal tank contains neon gas. Which of the following applies to the gas in the tank when some neon is removed at constant temperature?
CHEMISTRY, HOMEWORK Seth L. asked • 08/21/18
A rigid metal tank contains neon gas. Which of the following applies to the gas in the tank when some neon is removed at constant temperature?
1. The volume of the gas decreases
2. The pressure of the gas decreases
3. The average speed of the gas molecules decrease
4. The total number of gas molecules remains the same
5. The average distance between the gas molecules decreases
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1 Expert Answer
By:
Lauren H. answered • 08/21/18
TUTOR 4.8 (24)
7 years experience teaching High School Chemistry and Honors Chemistry
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1. The volume of the gas decreases It's not true because the problem states that the volume is fixed and a gas fills whatever volume is available.
2. The pressure of the gas decreases It's true. Fewer particles means fewer collisions with the side of the container. That's a decrease in pressure.
3. The average speed of the gas molecules decrease No, because temperature is a measure of the average kinetic energy of the particles in a sample, and the problem states that the temperature does not change.
4. The total number of gas molecules remains the same Obviously not is some are removed.
5. The average distance between the gas molecules decreases Nope, fewer particles in same volume means they will be further away from each other.
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AP Chemistry Gases Review
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QUIZ
AP Chemistry Gases Review
AP Chemistry Gases Review 69%
70 11th - 12th 11th - 12th Chemistry
2 years
9 Qs
1. Multiple-choice 30 seconds Q.
A 0.5 mol sample of He gas and a 0.5 mol sample of Ne gas are placed seaprately in two 10.0 L rigid containers at 25 degrees C. Each container has a pinhole opening. Which of the gases, He or Ne, will escape through the pinhole faster and why?
answer choices
He will escape faster because the He atoms are moving at a higher average speed than the Ne atoms.
Ne will escape faster because its initial pressure in the container is higher.
Ne will escape faster because the Ne atoms have a higher average kinetic energy than the He atoms.
Both gases will escape at the same rate because the atoms of both gases have the same kinetic energy.
2. Multiple-choice 30 seconds Q.
A 2 L container will hold about 4 grams of which of the following gases at 0 degrees C and 1 atm?
answer choices SO2 N2 CO2 NH3 3. Multiple-choice 30 seconds Q.
A 2 L sample of N2 and a 1 L sample of Ar, each originally at 1 atm and 273 K, are combined in a 1 L tank. If the temperature is held constant, what is the total pressure of the gases in the tank?
answer choices 1 atm 2 atm 3 atm 4 atm 4. Multiple-choice 30 seconds Q.
A rigid metal tank contains oxygen gas. Which of the following applies to the gas in the tank when additional oxygen is added at constant temperature?
answer choices
The volume of the gas increases
The pressure of the gas decreases
The average speed of the gas molecules remains the same
The average distance between the gas molecules increases.
5. Multiple-choice 30 seconds Q.
A sample of an ideal gas is cooled from 50.0 degrees C to 25.0 degrees C in a sealed container of constant volume. Which of the following values for the gas will decrease?
I. The average molecular mass of the gas
II. The average distance between the molecules
III. The average speed of the molecules
answer choices I only II only III only I and III 6. Multiple-choice 30 seconds Q.
Which of the following gases deviates most from ideal behavior?
answer choices SO2 Ne CH4 N2 7. Multiple-choice 30 seconds Q.
When a sample of oxygen gas in a closed container of constant volume is heated until its absolute temperature is doubled, which of the following is also doubled?
answer choices
The density of the gas
The pressure of the gas
The average velocity of the gas molecules
The potential energy of the molecules
8. Multiple-choice 30 seconds Q.
When 6.0 L of Helium gas and 10. L of N2 gas, both at 0 C and 1.0 atm, are pumped into an evacuated 4.0 L rigid container, the final pressure in the container at 0 C is
answer choices 2.0 atm 4.0 atm 6.4 atm 8.8 atm 9. Multiple-choice 30 seconds Q.
An equimolar mixture of N2 and Ar gases is kept inside a rigid container at a constant temperature of 300 K. The initial pressure of Ar in the mixture is 0.75 atm. An additional amount of Ar was added to the container, enough to double the number of moles of Ar gas in the mixture. Assuming ideal behavior, what is the final pressure of the gas mixture after the addition of the Ar gas?
answer choices
0.75 atm, because increasing the partial pressure of Ar decreases the partial pressure of nitrogen
1.13, because 33% of the moles of gas are Nitrogen
1.50, because the number of moles of Nitrogen did not change
2.25, because doubling the number of moles of Ar doubles its partial pressure.
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Guys, does anyone know the answer?