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
svet-max [94.6K]
3 years ago
15

A frictionless piston-cylinder device contains a saturated liquid and water vapor mixture at 110 ℃. During a constant pressure p

rocess, 546 kJ of heat is transferred to the surrounding air at 15 ℃. As a result, the vapor part inside the cylinder condenses. Determine a) the entropy change of the water and b) the generation of total entropy during this heat transfer process.
Chemistry
1 answer:
Charra [1.4K]3 years ago
8 0

Explanation:

(a)   It is given that heat transferred is -546 kJ (as heat is releasing) and temperature is 110 degree celsius.

Hence, the temperature in kelvin will be as follows.

                     (110 + 273) K

                   = 383 K

As it is known that relation between entropy change and heat is as follows.

                     S = \frac{Q}{T}

Putting the given values in the above equation as follows.

                   S = \frac{Q}{T}

                      = \frac{546 kJ}{383 K}  

                      = -1.4255 kJ/K

As temperature changes from 110 ^{o}C to 15 ^{o}C. So, (15 + 273) K = 288 K. Hence, change in entropy will be calculated as follows.

                \Delta S = \frac{Q}{T}

                             = \frac{546 kJ}{288 K}

                             = 1.895 kJ/K

Therefore, entropy change of water will be 1.895 kJ/K.

(b)    As total entropy generated will be the sum of both the entropies as follows.

              Total entropy = (-1.4255 kJ/K + 1.895 kJ/K)

                                     = 0.4695 kJ/K

Thus, total entropy during this heat transfer process is 0.4695 kJ/K.

You might be interested in
Given a 0.200 M solution of anserine at its isoelectric point and ready access to 0.100 M HCl, 0.100 M NaOH and distilled water,
vekshin1

Solution :

Given :

Amount of anserine solution = 0.200 M

pH value is = 7.20

Preparation of 0.04 M solution of anserine from the 0.2 M solution.

0.2 M x x = 0.04 M x 1000 ml

x = 200 ml

So the 200 ml of 0.2 M anserine solution is required to prepare0.04 M of anserine.

0.1 M x x = 0.04 x 1000 ml

x = 400 ml

Therefore, 400 ml of HCl is needed.

6 0
3 years ago
Each atom consists of a central nucleus and several shells that contain electrons. The outermost electrons are called valence el
Eduardwww [97]

Explanation:

Not only did outermost electron determine the valence electron, but also <em>periodic</em><em> </em><em>table</em><em>.</em><em> </em>whatever group they fall into in periodic table each valence electrons present in a particular atom e.g K and Ca belong to group 1 and 2 respectively and k has 1 and Ca have 2 in each outermost electron

8 0
3 years ago
How many atoms are in 3.5 moles of arsenic atoms?
solmaris [256]

Answer:

2.107×10²⁴

Explanation:

no of moles=no of particles/Avogadro's number

3.5=X/6.02×10²³

by cross multiplication

3.5×6.02×10²³

=2.107 ×10²⁴

5 0
3 years ago
Read 2 more answers
Which formula shows a correct representation of the combined gas law?(1 point)
Svetlanka [38]

The formula that shows the correct representation of the combined gas law is; V1P1 / T1=V2P2 / T2

The combined gas law is obtained from the statements of Charles law and Boyle's law as follows;

Charles law; V/T = k

Boyle's law = PV = k

Combining the two I have; PV/T = k

For two masses of an ideal gas;

V1P1 / T1=V2P2 / T2

This is the statement of the combined gas law.

Learn more: brainly.com/question/1190311

3 0
2 years ago
HELPPPP I NEED THIS ANSWERED ASAPP!!!
antiseptic1488 [7]
This is because the animals with the favorable traits would survive. Therefore they will be the only ones left because they were able to adapt to the environment. And when they breed, the offspring will gain those favorable and the less favorable traits will continue to not be used which is why they “fade away” overtime.
4 0
2 years ago
Other questions:
  • What are the evidence of continental drift
    14·2 answers
  • Consider the relationship (y+3)2 = b/(x-2), where y and x are variables and bis a constant. On rectangular coordinate paper, wha
    8·1 answer
  • Which organism does not have a tail or black hair​
    10·1 answer
  • A mixture of CO(g) and H2(g) is pumped into a previously evacuated 2.0 L reaction vessel. The total pressure of the reaction sys
    15·1 answer
  • Scienests use critical thinking skills throughout the process of research or experimentation. A student notices than
    8·1 answer
  • Gaseous compound Q contains only xenon and oxygen. When 0.100 gg of Q is placed in a 50.0 mLmL steel vessel at 0 ∘C∘C, the press
    6·1 answer
  • Give the chemical equation for the net reaction that occurs during the titration calcium iodate
    13·1 answer
  • The mode of 12, 17, 16, 14, 13, 16, 11, 14,13, 16 is​
    15·1 answer
  • The saturation point for a solution is 50.0 grams of solute per 500 grams of solvent. How many grams of solute can be dissolved
    5·1 answer
  • What is the term for a set of opinions that affect the scientific process?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!