Kinetic Molecular Theory and Avogadro's Hypothesis

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1. Which statement describes the particles of an ideal gas, based on the kinetic molecular theory? *

(1) The volume of the particles is considered negligible.

(2) The force of attraction between the particles is strong.

(3) The particles are closely packed in a regular repeating pattern.

(4) The particles are separated by small distances, relative to their size.

2. At STP, which gas sample has the same number of molecules as 2.0 liters of CH₄(g) at STP? *

(1) 1.0 liter of C₂H₆(g)

(2) 2.0 liters of O₂(g)

(3) 5.0 liters of N₂(g)

(4) 6.0 liters of CO₂(g)

3. At which temperature and pressure would a sample of helium behave most like an ideal gas? *

(1) 75 K and 500. kPa

(2) 150. K and 500. kPa

(3) 300. K and 50. kPa

(4) 600. K and 50. kPa

4. Each stoppered flask contains 2 liters of a gas at STP. Each gas sample has the same: *

density

mass

number of molecules

number of atoms

5. A sample of a gas in a rigid cylinder with a movable piston has a volume of 11.2 liters at STP. What is the volume of this gas at 202.6 kPa and 300. K? *

(1) 5.10 L

(2) 6.15 L

(3) 22.4 L

(4) 24.6 L

6. The kinetic molecular theory states that all particles of an ideal gas are *

(1) colliding without transferring energy

(2) in random, constant, straight-line motion

(3) arranged in a regular geometric pattern

(4) separated by small distances relative to their size

7. Which sample of gas at STP has the same number of molecules as 6 liters of Cl₂(g) at STP? *

(1) 3 liters of O₂(g)

(2) 6 liters of N₂(g)

(3) 3 moles of O₂(g)

4) 6 moles of N₂(g)

8. 44.8 liters of CO₂ contains the same number of molecules as *

1) 1.00 mole of He

2) 2.00 moles of Ne

3) 0.500 mole of H

4) 0.50 mole Ne

9. What is the total numbers of molecules in 11.2 liters of N₂ gas at STP? *

(1) 3.01 x 10²³

(2) 14.0

(3) 6.02 x 10²³

(4) 28.0

(5) There are no correct answers.

10. The Table below shows the Temperature, Pressure, and Volume of 5 samples. Which element contains the same number of molecules as sample A? *

(1) E

(2) B

(3) C

(4) D

11. Which sample of methane gas contains the greatest number of molecules at standard temperature? *

(1) 22.4 L at 1 atmosphere

(2) 22.4 L at 2 atmospheres

(3) 11.2 L at 1 atmosphere

(4) 11.2 L at 2 atmospheres

(5) No choices above correct

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