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
BabaBlast [244]
3 years ago
8

A gas is compressed from an initial volume of 5.75 L to a final volume of 1.23 L by an external pressure of 1.00 atm. During the

compression the gas releases 128 J of heat. What is the change in internal energy of the gas
Physics
1 answer:
nataly862011 [7]3 years ago
8 0

Answer:

<em>The internal energy change is 330.01 J</em>

Explanation:

Given

v_{1} the initial volume = 5.75 L

v_{2} the final volume = 1.23 L

P_{e} is the external pressure = 1.00 atm

q the heat energy removed = -128 J (since is removed from the system)

expansion against a constant external pressure is an example of an irreversible pathway, here pressure in is greater than pressure out and can be obtained thus;

W = -P_{e}ΔV

W = -1.00 x(1.23 - 5.75)

W =  -1.00 x -4.52

W = 4.52 L atm

converting to joules we have

W = 4.52 L atm x 101.33 J/ L atm = 458.01 J

The internal energy change during compression can be calculated thus;

ΔU = q + W

ΔU = -128 J + 458.01 J

ΔU = 330.01 J

Therefore the internal energy change is 330.01 J

You might be interested in
Imagine a glass box that is completely sealed and in that box is a cactus in a small pot which statement is most accurate?
Dennis_Churaev [7]
I THINK C BECAUSE IF IT IS A GLASS BOX HOW DID A CACTUS GET IN AND NOTHING CAN GET IN OR OUT OF THE BOX SO THERE IS NO CACTUS IN THE BOX
6 0
3 years ago
Read 2 more answers
Calculate the change in length of a 90.5 mm aluminum bar that has increased in temperature by from -14.4 oC to 154.6 oC
nignag [31]

Answer:

 ΔL = 3.82 10⁻⁴ m

Explanation:

This is a thermal expansion exercise

          ΔL = α L₀ ΔT

          ΔT = T_f - T₀

where ΔL is the change in length and ΔT is the change in temperature

Let's reduce the length to SI units

          L₀ = 90.5 mm (1m / 1000 mm) = 0.0905 m

let's calculate

          ΔL = 25.10⁻⁶ 0.0905 (154.6 - (14.4))

          ΔL = 3.8236 10⁻⁴ m

     

using the criterion of three significant figures

          ΔL = 3.82 10⁻⁴ m

5 0
3 years ago
What is an example of a stable system
oksian1 [2.3K]
Some examples of stable system are:

1) functions of sine

2) DC

3) signum

4) unit step 

5) cosine.

Happy Studying! ^^


6 0
3 years ago
Read 2 more answers
Please help in desperate
Rom4ik [11]

Answer:

D. 53°

Explanation:

3 0
3 years ago
What is the wavelength of sound wave in air that has a temperature of 24.6°C that has a frequency of 440.8 Hz?
nignag [31]
The answer is c have a good day
3 0
3 years ago
Other questions:
  • The voltage between the cathode and the screen of a television set is 22 kV. If we assume a speed of zero for an electron as it
    5·1 answer
  • Service conductors installed as unjacketed multiconductor cable shall ahv a minimum clearance of ft from windows that are design
    10·1 answer
  • A long, straight solenoid has 800 turns. when the current in the solenoid is 2.90 a, the average flux through each turn of the s
    9·1 answer
  • How long does it take to go 3000 miles at the speed of light?
    10·1 answer
  • Which statement is FALSE?
    14·1 answer
  • What is 18000 expressed in scientific notation​
    11·2 answers
  • (c) If η = 60% and TC = 40°F, what is TH, in °F?
    8·1 answer
  • How would radiation occur in space?
    12·1 answer
  • A wave oscillates 5.0 times a second and has a speed of 8.0 m/s .What is the frequency of this wave?
    9·1 answer
  • 1. If you add air to a flat tire through a single small entry hole, why does the air spread out to fill the tire?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!