Question

10. What is expected when the reaction shown below takes place in a thermally-insulated container fitted with a movable piston at a constant atmospheric pressure of 1 atm. 2 C2H6(g) + 7 O2 (g) à 4 CO2 (g) + 6 H2O (g) a. Volume will decrease and work will be done by the system. b. Volume will decrease and work will be done on the system. c. Volume will increase and work will be done on by the system. d. Volume will increase and work will be done on the system. e. Volume will remain unchanged and no work will be done on or by the system. 11. A sample of oxygen gas (O2) was found to effuse at a rate equal to three times that of an unknown gas. The molecular weight of the unknown gas is ___g/mol. a. 288 b. 144 c. 55 d. 96 e. 10.7 12. An ideal gas differs from a real gas in that the molecules of an ideal gas . a. Have a molecular weight of zero b. Have no attraction for one another c. Have no kinetic energy d. Have no appreciable molecular volumes e. Have ideal molecular energy a. B and d. b. b and c c. d and e d. a and b e. a and d 13. At what velocity (m/s) must a 45.5 g object be moving in order to possess a kinetic energy of 3.5 Joules? 14. Which one of the following conditions would always result in an increase in the internal energy of a system? a. The system gains heat and does work on the

          10. What is expected when the reaction shown below takes
place in a thermally-insulated container fitted with a
movable piston at a constant atmospheric pressure of 1 atm.
2 C2H6(g) + 7 O2 (g) à 4 CO2 (g) + 6 H2O (g)
a. Volume will decrease and work will be done by the
system.
b. Volume will decrease and work will be done on the
system.
c. Volume will increase and work will be done on by the
system.
d. Volume will increase and work will be done on the
system.
e. Volume will remain unchanged and no work will be
done on or by the system.

11. A sample of oxygen gas (O2) was found to effuse at a rate
equal to three times that of an unknown gas. The molecular
weight of the unknown gas is ___________g/mol.
a. 288
b. 144
c. 55
d. 96
e. 10.7

12. An ideal gas differs from a real gas in that the molecules
of an ideal gas ________.
a. Have a molecular weight of zero
b. Have no attraction for one another
c. Have no kinetic energy
d. Have no appreciable molecular volumes
e. Have ideal molecular energy
a. B and d. b. b and c c. d and e d. a
and b e. a and d
13. At what velocity (m/s) must a 45.5 g object be moving in
order to possess a kinetic energy of 3.5 Joules?

14. Which one of the following conditions would always
result in an increase in the internal energy of a system?
a. The system gains heat and does work on the

10. What is expected when the reaction shown below takes
place in a thermally-insulated container fitted with a
movable piston at a constant atmospheric pressure of 1 atm.
2 C2H6(g) + 7 O2 (g) à 4 CO2 (g) + 6 H2O (g)
a. Volume will decrease and work will be done by the
system.
b. Volume will decrease and work will be done on the
system.
c. Volume will increase and work will be done on by the
system.
d. Volume will increase and work will be done on the
system.
e. Volume will remain unchanged and no work will be
done on or by the system.

11. A sample of oxygen gas (O2) was found to effuse at a rate
equal to three times that of an unknown gas. The molecular
weight of the unknown gas is g/mol.
a. 288
b. 144
c. 55
d. 96
e. 10.7

12. An ideal gas differs from a real gas in that the molecules
of an ideal gas .
a. Have a molecular weight of zero
b. Have no attraction for one another
c. Have no kinetic energy
d. Have no appreciable molecular volumes
e. Have ideal molecular energy
a. B and d. b. b and c c. d and e d. a
and b e. a and d
13. At what velocity (m/s) must a 45.5 g object be moving in
order to possess a kinetic energy of 3.5 Joules?

14. Which one of the following conditions would always
result in an increase in the internal energy of a system?
a. The system gains heat and does work on the

Added by Eric M.

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