Question

Chemistry kicking my butt?
1. Which of the following statements is part of the kinetic theory? (1 point)
The particles of a gas move independently of each other.
The particles in a gas move rapidly.
The particles in a gas are relatively far apart.
all of the above
2. What is the one standard atmosphere of pressure in kilospascals? (1 point)
0 kPa
760 kPa
101.3 kPa
1 kPa
3. With which temperature scale is temperature directly proportional to average kinetic energy? (1 point)
Celsius
Fahrenheit
Kelvin
centigrade

Answer 1

Chemistry kicking my butt?
1. Which of the following statements is part of the kinetic theory? (1 point)
The particles of a gas move independently of each other.
The particles in a gas move rapidly.
The particles in a gas are relatively far apart.
all of the above
2. What is the one standard atmosphere of pressure in kilospascals? (1 point)
0 kPa
760 kPa
101.3 kPa
1 kPa
3. With which temperature scale is temperature directly proportional to average kinetic energy? (1 point)
Celsius
Fahrenheit
Kelvin
centigrade
4. Which states of matter can flow? (1 point)
gases only
liquids only
gases and liquids only
gases, liquids, and solids
5. Which are the first particles to evaporate from a liquid? (1 point)
particles with the lowest kinetic energy
particles with the highest kinetic energy
particles below the surface of the liquid
All particles evaporate at the same rate.
6. An increase in the temperature of a contained liquid _____. (1 point)
has no effect on the kinetic energy of the liquid
causes the vapor pressure above the liquid to decrease
causes fewer particles to escape from the surface of the liquid
causes the vaopr pressure above the liquid to increase
7. Water could be made to boil at 105°C instead of 100°C by ____. (1 point)
adding a lot of energy to the water
increasing the external pressure
decreasing the external pressure
taking the sample to a higher altitude
8. How do crystal systems differ? (1 point)
in the angles between faces only
in the number of edges of equal length only
in the angles between faces and the number of edges of equal length
Crystal systems do not differ.
9. Which of the following elements has the ability to undergo sublimation? (1 point)
oxygen
carbon
sodium
iodine
10. How does the gas propellant move when an aerosol can is used? (1 point)
from a region of high pressure to a region of lower pressure
from a region of high pressure to a region of equally high pressure
from a region of low pressure to a region of higher pressure
from a region of low pressure to a region of equally low pressure
11. Why air escape from a tire when the tire valve is opened? (1 point)
The pressure outside the tire is lower than the pressure inside the tire.
The pressure outside the tire is greater than the pressure inside the tire.
The temperature is higher outside the tire than inside the tire.
There are more particles of air outside the tire than inside the tire.
12. Boyle's law states that ____. (1 point)
the volume of a gas varies inversely with pressure
the volume of a gas varies directly with pressure
the temperature of a gas varies inversely with pressure
the temperature of a gas varies directly with pressure
13. When the volume and number of particles of a gas are constant, which of the following is also constant? (1 point)
the sum of the pressure and temperature in kelvins
the difference of the pressure and temperature in kelvins
the product of the pressure and temperature in kelvins
the ratio of the pressure and temperature in kelvins
14. If a sealed syringe is plunged into cold water, in which direction will the syringe piston slide? (1 point)
in
out
No movement will occur.
The direction cannot be predicted.
15. Under what conditions of temperature and pressure is the behavior of real gases least like that of ideal gases? (1 point)
low temperature and low pressure
low temperature and high pressure
high temperature and low pressure
high temperature and high pressure
16. If oxygen is removed from a sample of air as iron rusts, what happens to the partial pressure of oxygen in the air? (1 point)
It increases.
It stays the same.
It decreases.
The change cannot be determined.
17. A box with a volume of 22.4 L contains 1.0 mol of nitrogen and 2.0 mol of hydrogen at 0°C. Which of the following statements is true? (1 point)
The total pressure in the box is 101 kPa.
The partial pressures of N2 and H2 are equal.
The total pressure is 202 kPa.
The partial pressure of N2 is 101 kPa.
18. Which of the following gases will effuse the most rapidly? (1 point)
bromine
chlorine
ammonia
hydrogen
19. Which of the following is primarily responsible for holding water molecules together in the liquid state? (1 point)
dispersion forces
hydrogen bonds
ionic bonds
polar covalent bonds
20. Which is responsible for the high thermal energy required to melt ice? (1 point)
covalent bonding
dispersion forces
hydrogen bonding
ionic attractions
21. Predict which one of the following compounds would be insoluble in water. (1 point)
NaCl
HCl
CF4
CuSO4
22. An electric current can be conducted by ____. (1 point)
methane gas
a sugar solution
a salt solution
rubbing alcohol
23. Which of the following mixture types can be filtered to remove solutes?
(1 point)
suspensions only
colloids only
suspensions and colloids
suspensions and solutions
24. What causes Brownian motion in col

Answer 2

could you check my answers
please

Answer 3

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