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]
2 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]2 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
What is the most likely result of the pollution of a fresh water resource?
Troyanec [42]

Answer:

Loss of biodiversity in the wetlands.

Explanation: Pollution can be defined as the emission of toxic, poisonous and harmful chemical substances which are capable of causing environmental degradation and contamination.

Nitrogen pollution enters Earth’s freshwater resources from a variety of human activities, including the use of fertilizers and pesticides in agriculture. This nitrogen pollution has a negative effect on plants and animals living in fresh water. Certain wetland plants, however, are able to purify the water and restore it to its non-polluted state.

Hence, what would most likely increase the negative effects of nitrogen pollution is a loss of biodiversity in the wetlands i.e the various species of animal and plants.

6 0
3 years ago
What is a substance's specific heat? the energy required to raise one kilogram of the substance one degree the energy required t
rodikova [14]

the energy required to raise one kilogram of the substance one degree

4 0
3 years ago
What effect is climate change having on the amount of water in liquid, solid, and gas forms on Earth?
enyata [817]
Increased temperatures cause changes in atmospheric circulation and increase evaporation and water vapor, resulting in precipitation increases, more intense precipitation, more storms and sea level rise.
8 0
2 years ago
What is its molecular formula?​
uysha [10]

Answer:

C₆H₈O₆

Explanation:

The molecular formula of given compound is C₆H₈O₆. Because there are six carbon, six oxygen and eight hydrogen atom present in this compound.

The molecular weight of following compound is,

C₆H₈O₆

C = 12 amu

H = 1 amu

O = 16 amu

C₆H₈O₆ = 12×6 + 1×8 + 16×6

C₆H₈O₆ = 72 +8 + 96

C₆H₈O₆ = 176 g/mol

7 0
2 years ago
How many mg of salt are in a 2.78 kg bag of salt?
igomit [66]

Answer:

2,780,000mg

Explanation:

Using the Metric Staircase photo provided, you can calculate how many mg there are in 2.78 kg by simply moving the decimal point six places to the right, since the "Kilo" step takes six places to move to the "Milli" step.

2.78 kg

---------------

2 7 8 0 0 0 0 .

we can see that the decimal point is moved to the right six places.

Answer:

2,780,000mg

7 0
3 years ago
Other questions:
  • Is it possible to find density and volume of a substance with just the mass?
    10·1 answer
  • When light bends around an object, the light is
    15·2 answers
  • How does a rock from the mountain become a pebble on the shore
    12·2 answers
  • The internet is a local communication network that allows only certain computers to connect and exchange information True or fal
    11·1 answer
  • you must make an aqueous solution that will be a good conductor of electricity. You can pick two substances to add to the water.
    5·2 answers
  • Which is a difference between animal populations in primary succession and secondary succession?
    12·2 answers
  • Jamal’s teacher has asked the class to use this picture to explain how potential energy transforms to kinetic energy when an obj
    10·1 answer
  • Kinetic Energy Problems = KE = 0.5m x 12
    12·1 answer
  • An ice skater moves back and forth on an ice rink. She speeds up on the straight portion of the rink. She slows down near each e
    10·1 answer
  • PLEASE HELP ME!!!
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!