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Umnica [9.8K]
1 year ago
8

What is the change in entropy of 0.130 kg of helium gas at the normal boiling point of helium when it all condenses isothermally

to 1.00 l of liquid helium?
Physics
1 answer:
exis [7]1 year ago
3 0

At helium's typical boiling point, the change in entropy of the gas is -644J/K.

What is Entropy?

The measurement of disorder or randomness is called entropy. This unpredictability might apply to the entire cosmos, a straightforward chemical event, or even something as basic as the heat exchange and heat transport. The lack of uniformity or irregularity in a thermodynamic system is referred to as a disorder. Entropy is represented by the letter "S," and it is a broad attribute since the amount of entropy or the rate at which it changes depends on the components of a thermodynamic system. Entropy is an intriguing idea since it contradicts the notion that all heat is transferred. By doing so, the second law of thermodynamics is redefined. Entropy and spontaneity are related, meaning that the more disorder or entropy a thermodynamic process has, the more spontaneity it exhibits.

To learn more about Entropy, visit:

brainly.com/question/13146879

#SPJ4

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tankabanditka [31]

Answer:

The blade of sharpener is made up of iron. Iron is a magnetic material because of this pencil sharpener gets attracted by the poles of a magnet although the body is made up of plastic.

5 0
3 years ago
At a particular instant, a proton at the origin has velocity < 5e4, -2e4, 0> m/s. You need to calculate the magnetic field
vesna_86 [32]

Answer:

9.7\times 10^{-5} T

Explanation:

Velocity =5\times 10^4i-2\times 10^4j

r=0.03i+0.05j

r=\mid r\mid=\sqrt{(0.03)^2+(0.05)^2}=0.058

v=\mid V\mid=\sqrt{(5\times 10^4)^2+(-2\times 10^{4})^2}=5.39\times 10^{2}

We know that

B=\frac{mv}{qr}

Where q=1.6\times 10^{-19} C

Mass of proton=1.67\times 10^{-27} kg

Using the formula

B=\frac{1.67\times 10^{-27}\times 5.39\times 10^2}{1.6\times 10^{-19}\times 0.058}

B=9.7\times 10^{-5} T

3 0
3 years ago
If pressure is increased from 200 kPa to 300 kPa, and the original volume of gas was 1.5 L, what is the new volume? Assume the t
Oxana [17]

Answer:

The answer to your question is:      V2 = 1 l

Explanation:

Data

P1 = 200 kPa

P2 = 300 kPa

V1 = 1.5 l

V2 = ?

Formula

                          P1V1 = P2V2

                          V2 = (P1V1) / P2

                          V2 = (200 x 1.5) / 300

                          V2 = 1 l

6 0
3 years ago
Which of the following has the fewest calence electrons?
dlinn [17]

Answer:

both magnesium and strontium have 2 valence electrons

Explanation:

potassium has 8 valence electrons, and nitrogen has 5.

8 0
2 years ago
Your friend just challenged you to a race through an obstacle course. You know in order to beat him, you must run 30 meters with
seropon [69]

Answer:

Velocity = 0.5 m/s South (A)

Explanation:

You need to determine the average rate of velocity.  

The equation you will use is velocity = displacement/time

The displacement is 30m South.

The time is 60 seconds.

Plug into the equation  Velocity = 30m South/60 s

Velocity = 0.5 m/s South

3 0
3 years ago
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