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
faltersainse [42]
3 years ago
8

The boiling point of ethanol is 78 °C. The molar heat(i.e., enthalpy)of vaporization of ethanol is 38.6 x 103J/mol. What is the

molar entropyof vaporization of ethanol?

Chemistry
1 answer:
kogti [31]3 years ago
4 0

Answer:

109.97JK-1

Explanation:

Entropy is the degree of disorderliness of a substance. It is given by ∆H/T where T is the absolute temperature in Kelvin.

Given ∆H= 38.6*10^3

T=78°C+ 273=351K

∆S=38.6*10^3/351=109.97JK-1 as shown the diagram.

You might be interested in
Which sentence explains why gases can change volume but liquids cannot?
choli [55]

Answer: Molecules of gas are usually far apart and can be compressed unlike molecules of liquids.

Explanation:

The molecules of gases are usually far apart, moving freely and randomly, occupying extra space in the containing vessel. Hence, when compressed to become closely packed, gases have lower volume.

However, unlike gases, the molecules of a liquid are restricted, move less freely and occupy no extra space. Hence, liquids cannot be compressed, and their volume remains the same in their containing vessel.

8 0
3 years ago
Read 2 more answers
Which of the following could not act as a medium for a mechanical wave?
Y_Kistochka [10]
I believe it is either A or B
7 0
3 years ago
Read 2 more answers
Convert 4.50 moles of fe to atoms of fe
Rina8888 [55]
<span>Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles. We do as follows:

4.50 mol Fe ( 6.022x10^23 atoms / 1 mol Fe ) = 2.71x10^24 atoms Fe present </span>
7 0
3 years ago
Do you think the continents will ever rejoin to form another supercontinet like pangaea? why or why not?
shusha [124]
No because it would have to take an exponential amount of time in which the sun is more likely to explode.
7 0
3 years ago
Easy Question. Will mark brainliest
Xelga [282]

Answer:

Their components

Explanation:

It's simple enough, the components in carbon dioxide and carbon monoxide both have at least one carbon and one oxygen atom. However, they differ because their amount in the molecules is different, and that is because of their covalent bonds. Carbon dioxide has to double electron bonds while carbon monoxide has a rare triple electron bond.

8 0
3 years ago
Other questions:
  • Rocks formed by changes in heat and pressure or the presence of hot, watery fluids
    7·2 answers
  • An element has ccp packing with a face-centered cubic unit cell. its density is 8920 kg/m3 and the unit cell volume is 4.72 x 10
    12·1 answer
  • When combined with alcohol some over the counter drugs can:
    15·2 answers
  • What do scientist measure by using a triple-beam balance
    11·1 answer
  • “Highest molecular motion, highest kinetic energy, no forces of attraction, least dense packaging of molecules.” which state of
    5·2 answers
  • Whenever you see an ‘N’, ‘S’, or ‘P’ followed by a bunch of oxygens you know you have a
    11·2 answers
  • How many atoms are in 3.5 moles of He?
    14·1 answer
  • The accepted value for R is 0.08206 L·atm/K·mol or 8.314 L·kPa/K·mol, depending on the unit of pressure used. (Your answer may d
    7·1 answer
  • Mr. Holmes is busy making a paper mache volcano that he is sure is going to win the national science fair contest. He only has r
    6·1 answer
  • What is the % yield when 12g of Mg react with HCl to produce 0.2g of H2?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!