AnswersFL-2003350-Chemistry 1 HonorsPressure

Pressure Answers

15 verified answers3 views
1
Free Preview

The pressure inside a gas cylinder is 3,506 mmHg. How many atmospheres of pressure is the gas exerting on the cylinder?

A
0.2168 atm
B
4.613 atm
C
34.60 atm
D
467.4 atm
2
Free Preview

If the pressure of a gas is 2.42 atm, what is its pressure in kPa?

A
0.00318 kPa
B
0.0239 kPa
C
245 kPa
D
1,840 kPa
3

A factory at a low elevation ships bags of popcorn to cities at high elevations. Why does the factory manager need to monitor the amount of air in each bag?

A
Too few molecules can cause the bag to collapse and crush the popcorn as it moves from a low pressure to a high pressure.
B
Too many molecules can cause the bag to pop as it moves from a low pressure to a high pressure.
C
Too few molecules can cause the bag to collapse and crush the popcorn as it moves from a high pressure to a low pressure.
D
Too many molecules can cause the bag to pop as it moves from a high pressure to a low pressure.
4

Which unit of pressure is derived from the early barometers used to measure pressure?

A
mmHg
B
bar
C
Pa
D
atm
5

How many atm are in 1,520 mmHg?

A
0.500 atm
B
2.00 atm
C
15.0 atm
D
203 atm
6

Which sequence describes the result of increasing the number of gas particles in a container?

A
fewer collisions ® lower collision force ® lower pressure
B
more collisions ® lower collision force ® lower pressure
C
fewer collisions ® greater collision force ® higher pressure
D
more collisions ® greater collision force ® higher pressure
7

An empty plastic bottle is sealed in a cool room and then moved to a very hot room. What can best be stated about the air pressure inside the bottle when the bottle reaches room temperature?

A
It is lower than the pressure on the outside of the bottle.
B
It is higher than the pressure on the outside of the bottle.
C
It is the same as the pressure on the outside of the bottle.
D
It exerts twice the force per unit area as the air pressure outside the bottle.
8

A hiker seals a plastic bag that contains dried fruits before he climbs a mountain. What will most likely happen to the plastic bag as the hiker reaches the top of the mountain?

A
The bag will expand.
B
The bag will shrink.
C
The bag will remain the same size.
D
The bag will allow air to enter.
9

Why does a plastic bottle that is sealed at a high altitude change its shape when it is taken to a low altitude?

A
The number of gas molecules that strike the outside of the bottle increases as altitude decreases.
B
The number of gas molecules that strike the outside of the bottle decreases as altitude decreases.
C
The bonds between the molecules of the plastic bottle become weaker as the altitude decreases.
D
The bonds between the molecules of the plastic bottle become stronger as the altitude decreases.
10

Which corresponds to a pressure of 1.23 atm?

A
8.73 mmHg
B
9.23 mmHg
C
125 mmHg
D
935 mmHg
11

Which is the SI unit for pressure?

A
Pa
B
Torr
C
psi
D
inHg
12

If the atmospheric pressure on the top of a mountain is 0.2396 atm, what is the pressure in kilopascal (kPa)?

A
2.365 ´ 10–3 kPa
B
24.28 kPa
C
182.1 kPa
D
422.9 kPa
13

How many mmHg are in 1.6320 atm?

A
12.241 mmHg
B
165.36 mmHg
C
465.69 mmHg
D
1,240.3 mmHg
14

Which unit is commonly used for measuring pressure?

A
m3
B
bar
C
N/m3
D
Celsius
15

Which conditions are equal to STP?

A
30°C, 100 kPa
B
–273.15°C, 1 atm
C
0°C, 760 mmHg
D
25°C, 101.325 kPa

Did you find these answers helpful?

More from this Course

Instruction
14 verified answers

Instruction

Instruction
12 verified answers

Instruction

Instruction
9 verified answers

Instruction