1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Salsk061 [2.6K]
2 years ago
10

How much heat is needed to vaporize 33.3 grams of ethyl alcohol at its boiling point of 78.0°C? The latent heat of vaporization

of ethyl alcohol is 857 J/g. Round your answer to three significant figures. joules
Physics
2 answers:
blsea [12.9K]2 years ago
6 0

Answer:

Q = 28538.1 J

Explanation:

As we know that heat require to vaporize the ethyl alcohol is given as

Q = mL

here we know that

m = mass = 33.3 gram

L = latent heat of fusion = 857 J/g

now from above formula

Q = (33.3 gram) \times (857 J/gram)

Q = 28538.1 J

so heat required in three significant figures is given as

Q = 2.85\times 10^4 J

so heat required to vaporize ethyl alcohol is 2.85\times 10^4 J

weeeeeb [17]2 years ago
4 0
The amount of heat needed to vaporize 33.3 grams of ethyl alcohol at its boiling point of 78.0°C is 28,500 joules.
You might be interested in
Can anyone plzzzz answer this question... Cuz it's really urgent....
nlexa [21]

The fastest in speed of sound is steel. The slowest in speed of sound is oxygen. Hope this helped! I don't really know how to answer this but by looking at the table it looks like this can be one of the conclusions.

4 0
3 years ago
Read 2 more answers
Student A states that when she sits down on a chair, she is exerting a force on the chair and that is all that happens. Student
zvonat [6]

Answer:

C

Explanation:

I got it right on the test !!

7 0
2 years ago
Now the elevator is moving downward with a velocity of v = -2.8 m/s but accelerating upward with an acceleration of a = 5.5 m/s2
borishaifa [10]

Answer:

160.75 N

Explanation:

The downward velocity has no effect on the force situation, it is only changes in velocity (plus, of course, gravity, which is always there) that require a force. At constant velocity, the bottom spring s_3 is supporting its mass m_3 to balance gravity.

As the elevator slows, though, it also ends up slowing down the spring arrangement, too. However, because the stretching takes time, it means that some damped harmonic motion will be set up in the spring chain.

When the motion has finally damped out, the net force the bottom spring s3 exerts on m3 has two components--that of gravity and of the deceleration of the elevator:

F_3net = m3 * (g + a) = 10.5×(9.81+5.5)= 10.5×15.31= 160.75 N

5 0
3 years ago
LAB: Thermal Engery Transfer
hodyreva [135]

Answer:

A- mass and type of material

B- type of material

C- Temperature

Explanation:

thx

6 0
2 years ago
How many valence electrons do most stable atoms have?
IceJOKER [234]

Answer:

D) 8

Explanation:

Due to the octet rule the most stable atoms will have 8 valence electrons.

8 0
2 years ago
Other questions:
  • Which demonstrates conduction?
    11·2 answers
  • Boyle's law says that the volume of a gas varies inversely with the pressure. When the volume of a certain gas is 4l , the press
    12·1 answer
  • What are the signs of a chemical change
    14·1 answer
  • A horse 1 m tall running towards a tree at a constant velocity of 20m/s,
    10·1 answer
  • I have to build a roller coaster with 3 hills and 2 valleys. Hill A is 15 inches high, valley B is 3 inches high, hill C is 8 in
    6·2 answers
  • The amoeba is a protozoan that moves with _____.
    7·2 answers
  • In a bizarre but harmless Superman fell from the top of the Eiffel How fast was Superman traveling when he hit the ground 7.80 s
    9·1 answer
  • An airplane is flying in a horizontal circle at a speed of 480 km/h. If its wings are tilted 40° to the horizontal, what is the
    8·1 answer
  • Explain the difference between velocity and acceleration.​
    9·2 answers
  • PLS, NO SPAM!!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!