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HOMEWORK #14

Total questions: 62

Worksheet time: 47mins

Name
Class
Date
1.

Find the molar mass of CaCO3  

a)

68.1 g/mol

b)

216.8 g/mol

c)

100.1 g/mol

2.

Find the molar masses of the following compounds:

Ca(OH)2

a)

303.3 g/mole

b)

102.9 g/mole

c)

74.1 g/mole

d)

160.0 g/mole

e)

96.0 g/mole

3.

Determine the number of moles of AlNO3 that are in 264 g of the compound.

a)

2.97 mol

b)

80 mol

c)

0.337 mol

d)

4.63 mol

4.

Determine the amount of moles in CuBr that are in 276.9 g of the compound.

a)

143.5

b)

0.5182

c)

1.930

5.

Find the mass of 3.8 mol of H2O. Round to the nearest tenth.

a)

18.0 g

b)

68.4 g

c)

4.7 g

6.
How many moles of carbon atoms are there in 5g of carbon?
a)
60 mol
b)
17 mol
c)
0.42 mol
d)
7 mol
7.
How many atoms of iodine are in a mole of iodine?
a)
53
b)
63.55g
c)
126.9
d)
6.02 x 1023
8.
The number 6.02 x 1023 is called...
a)

Lewis number

b)
Bohr's number
c)

Avocado's number

d)
Avogadro's number
9.
What is the molar mass of NaCl?
a)
58.45g/mol
b)
28g/mol
c)
12g/mol
d)
6.02 x 1023
10.
What is the molar mass of C2H4O2?
a)
40g
b)
50g
c)
60g
d)
68g
11.

What is a mole?

a)

6.022 x 1023 particles of any substance

b)

A small burrowing animal

c)

A dark spot on your skin

d)

A spy

12.

An element's molar mass can be found on what part of an element's entry on the periodic table?

a)

atomic number

b)

atomic mass

c)

group number

d)

it can't be found on the periodic table

13.

Which of these elements has the highest molar mass?

a)

Hydrogen

b)

Iron

c)

Carbonate

d)

Cobalt

14.
Find the mass in grams of 0.75 moles of magnesium (Mg).
a)
32 grams
b)
18 grams
c)
2.21 x 10 ^23 grams
15.
A mole of Neon contains
6.02 x 1023 _____.
a)
atoms
b)
formula units
c)
ions
d)
molecules
16.
When the temperature of matter increases the particles...
a)
speed up and move closer
b)
speed up and move farther apart
c)
slow down and move closer together
d)
slow down and move farther apart
17.
How do gas molecules move? 
a)
in an orderly fashion 
b)
constantly and randomly
c)
in straight line paths
d)
in a circular motion
18.
True or False: Gases can be compressed. 
a)
True
b)
False
19.
When Pressure increases then the Volume must...
a)
Increase
b)
decrease
20.
What type of relationship to pressure and volume have?
a)
direct
b)
inverse
c)
no relationship
d)
I don't know
21.
Which container will have a lower pressure?
a)
left
b)
right
c)
they both have the same pressure
d)
I don't know
22.
What causes pressure?
a)
The walls of the container
b)
The vacuum in the container
c)
The collisions of the particles
d)
Atmospheric pressure acting on the outside walls
23.
According to Boyle's law of PV, at constant temperature, as the pressure of a given sample of gas is increased, the volume will –
a)
Increase
b)
Decrease
c)
Remains the same
24.
If a balloon is cooled what will happen to the volume?
a)
Volume will increase
b)
Volume will decrease
c)
Volume will not change
25.
Which of the following would increase the (gas) pressure of a system?
a)
Increase the Temperature
b)
Pump in more gas
c)
Decrease the volume
d)
All of these
26.
Gases have...
a)
A definite shape and volume
b)
A definite shape but no definite volume
c)
No definite shape but a definite volume
d)
No definite shape or volume
27.
When the temperature of matter increases the particles...
a)
speed up and move closer
b)
speed up and move farther apart
c)
slow down and move closer together
d)
slow down and move farther apart
28.
A gas of volume V is placed in a balloon.  Determine the new volume of the balloon if the pressure is tripled. The new volume will be ____ what it was originally.  
a)
1/3 of
b)
1/6 of
c)
1/9 of
d)
 9 times
29.
A gas of volume V is placed in a balloon. The absolute (Kelvin) temperature is tripled. The volume will be _____ what it was originally. 
a)
1/3
b)
1/6
c)
3 times
d)
6 times
30.

Ice is a good example of matter in what phase?

a)

Solid

b)

Liquid

c)

Gas

31.

Water vapor is an example of what phase of matter?

a)

Solid

b)

Liquid

c)

Gas

32.

What occurs when a liquid becomes a solid?

a)

Freezing

b)

Melting

33.

What occurs when a gas becomes a liquid?

a)

Melting

b)

Condensation

34.

What state of matter has its own shape and a definite volume?

a)

Solid

b)

Liquid

c)

Gas

35.

What state of matter takes the shape of its container and has a definite volume?

a)

Solid

b)

Liquid

c)

Gas

36.

What state of matter takes the shape of its container and doesn't have a definite volume?

a)

Solid

b)

Liquid

c)

Gas

37.

When ice cubes form, heat is

a)

Added

b)

Removed

38.

When water vapor turns back into a liquid, heat is

a)

Evaporated

b)

Condensed

39.

When liquid turns into a gas, heat is

a)

Added

b)

Removed

40.

Anything that takes up space and has mass is

a)

Matter

b)

Mass

41.

What happens when a liquid turns into a gas?

a)

Condensation

b)

Evaporation

42.

What happens to water while it is boiling?

a)

Condensation

b)

Evaporation

43.

Liquid to Gas

a)

melting

b)

vaporization

c)

condensation

d)

sublimation

44.

Freezing

a)

F

b)

C

c)

A

d)

D

45.

Melting

a)

endothermic

b)

exothermic

46.

Gas to liquid

a)

vaporization

b)

melting

c)

condensation

d)

sublimation

47.

Sublimation

a)

A

b)

B

c)

C

d)

F

48.

Condensation

a)

endothermic

b)

exothermic

49.

Solid to liquid

a)

freezing

b)

melting

c)

sublimation

d)

condensation

50.

Vaporization

a)

B

b)

E

c)

D

d)

F

51.

Freezing

a)

endothermic

b)

exothermic

52.

Deposition

a)

A

b)

C

c)

B

d)

F

53.

Under what temperature and pressure conditions does a gas behave the most like and ideal gas? (Choose all that apply.)

a)

high pressure (above 1 atm)

b)

low temperature (below 273 K)

c)

standard temperature

(273 K)

d)

standard pressure (1 atm)

54.
Of these three states of matter, which one has the most kinetic energy? 
a)
Solid 
b)
Liquid 
c)
Gas
55.

What is one assumption that must be made for the kinetic molecular theory to be applied to gases?

a)

Collisions between gas particles are elastic.

b)

Gases consist of closely spaced particles.

c)

Gas particles rarely move.

d)

Each gas particle has a definite volume.

56.

Under what temperature and pressure conditions does a gas deviate from the ideal behavior? (Choose all that apply.)

a)

higher pressure (above 1 atm)

b)

lower temperature (below 273 K)

c)

standard temperature

(273 K)

d)

standard pressure (1 atm)

57.

What state of matter exists at A, B, and C?

a)

Solid, Liquid, Gas

b)

Gas, Liquid, Solid

c)

Solid, Gas, Liquid

d)

Liquid, Solid, Gas

58.

Approximately, what is the temperature and pressure at the triple point for this substance?

a)

500C and 300 atm

b)

2000C and 300 atm

c)

-150C and 6 atm

d)

1500C and 1.5 atm

59.

According to Charle's Law, volume and temperature are directly related. Explain what is meant by stating that volume and temperature are directly related. V1T1 = V2T2\frac{V_1}{T_1}\ =\ \frac{V_2}{T_2}  

a)

Volume increases, temperature decreases.

b)

Volume increases, temperature increases.

c)

Volume decreases, temperature increases.

d)

Temperature increases, volume decreases.

60.

If a balloon has a volume of 1.0 L at 00 C, which of the following locations would cause the balloon to increase in size?

a)

Long Beach, CA where the temperature is about 380 C.

b)

Mt. Everest where the temperature is about -270 C.

61.

What units must temperature always be in for ALL the gas laws?

a)

Celcius

b)

Kelvin

c)

Fahrenheit

d)

Kelvin or Celcius

62.

What units must volume be in for the ideal gas law?

a)

mL

b)

torr

c)

Liters

d)

mmHg

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