L
little dragon
Guest
...please help me? I did most of them but i am having trouble with these there was like 30 of them. But i did most will you please help with these thanks to all that help.
9. Water boils at 100°C. What is that temperature on the Kelvin scale?
213 K
325 K
333 K
373 K
10. The average speeds of gas molecules in cylinders A, B, C, and D are 0.01 m/s, 0.005 m/s, 0.1 m/s, and 0.5 m/s, respectively. Which cylinder contains gas that is closest to absolute zero?
A
B
C
D
11. Of these four liquids, which is the most viscous?
H2O
CCl4
C2H12O6
Hg
12. Increasing the total pressure above a liquid raises the boiling point. Which of the following best explains why?
The number of molecules with high kinetic energies is reduced.
The number of molecules with high kinetic energies is increased.
The amount of kinetic energy required for the molecules to break free of the intermolecular forces in the liquid is decreased.
The amount of kinetic energy required for the molecules to break free of the intermolecular forces in the liquid is raised.
13. Which crystal conducts electricity most efficiently?
sugar
graphite
potassium chloride
silver
14. Intermolecular forces allow which of the following substances to be the least fluid?
glass
calcite
mercury
rubber
15. How many moles of a gas sample are in a 5.0 L container at 373 K and 203 kPa?
0.33 moles
0.66 moles
1.11 moles
3.05 moles
16. A 3.0 L container holds a sample of hydrogen gas at 150 kPa. If the pressure increases to 2 atm and the temperature remains constant, what will the volume be?
0.22 L
0.44 L
2.25 L
4.50 L
9. Water boils at 100°C. What is that temperature on the Kelvin scale?
213 K
325 K
333 K
373 K
10. The average speeds of gas molecules in cylinders A, B, C, and D are 0.01 m/s, 0.005 m/s, 0.1 m/s, and 0.5 m/s, respectively. Which cylinder contains gas that is closest to absolute zero?
A
B
C
D
11. Of these four liquids, which is the most viscous?
H2O
CCl4
C2H12O6
Hg
12. Increasing the total pressure above a liquid raises the boiling point. Which of the following best explains why?
The number of molecules with high kinetic energies is reduced.
The number of molecules with high kinetic energies is increased.
The amount of kinetic energy required for the molecules to break free of the intermolecular forces in the liquid is decreased.
The amount of kinetic energy required for the molecules to break free of the intermolecular forces in the liquid is raised.
13. Which crystal conducts electricity most efficiently?
sugar
graphite
potassium chloride
silver
14. Intermolecular forces allow which of the following substances to be the least fluid?
glass
calcite
mercury
rubber
15. How many moles of a gas sample are in a 5.0 L container at 373 K and 203 kPa?
0.33 moles
0.66 moles
1.11 moles
3.05 moles
16. A 3.0 L container holds a sample of hydrogen gas at 150 kPa. If the pressure increases to 2 atm and the temperature remains constant, what will the volume be?
0.22 L
0.44 L
2.25 L
4.50 L