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
choli [55]
3 years ago
12

Which of the following is a definition of glass transition temperature?

Chemistry
1 answer:
stepan [7]3 years ago
4 0

Answer:

The temperature at which a glass transforms from a liquid to solid.

Explanation:

Glass transition temperature is defined for polymers, so is the temperature at above which the soft and ductile polymer changes into hard britle material. It basically increases the viscosity of the material. Glass transition temperature is less than the melting point temperature. So, the polymer initially showing liquid like characteristics after transition temperature shows solid like characteristics.

So, the correct answer is

The temperature at which a glass transforms from a liquid to solid.

You might be interested in
Which element is likely to have the highest thermal conductivity
AlexFokin [52]
Gallium, due to its metal properties, which tend to conduct electricity and heat quite well.
3 0
3 years ago
Is the cell wall factory part or worker? And please explain what the worker or factory part does. (Don’t tell me it’s on quizlet
dem82 [27]
Cell wall is a worker because it allows water and sugar in and out (atp)
5 0
3 years ago
Which element do all organic compounds contain?
bulgar [2K]

Answer:

hydrogen oxygen or nitrogen

6 0
3 years ago
Can Hydrocyanic acid be a Lewis Acid? What about a Lewis Base?
FinnZ [79.3K]

HCN is a Bronsted acid; it can dissociate into H+ and CN-. And H+ is a Lewis acid because it accepts election pairs. ... In order for H+ and CN- to be formed, Hydrogen in HCN donates its electrons to Carbon. So in this sense, Hydrogen is the lewis base and Carbon is the lewis acid.

8 0
3 years ago
The edge length of the unit cell of KCl (NaCl-like structure, FCC) is 6.28 Å. Assuming anion-cation contact along the cell edge,
Mila [183]

Answer:

1.33 Å

Explanation:

Given that the edge length , a of the KCl which forms the FCC lattice = 6.28 Å

Also,

For the FCC lattice in which the anion-cation contact along the cell edge , the ratio of the radius of the cation to that of anion is 0.731.

Thus,

\frac {r^+}{r^-}=0.731 .................1

Also, the sum of the radius of the cation and the anion in FCC is equal to half of the edge length.

Thus,

r^++r^-=\frac {a}{2}  ...................2

Given that:

Cl^-\ (r^-) = 1.82\ \dot{A}

To find,

K^+\ (r^+) = ? \dot{A}

Using 1 and 2 , we get:

1.731\ r^+=0.731\times \frac {6.28}{2}

<u>Size of the potassium ion = 1.33 Å</u>

4 0
3 years ago
Other questions:
  • Doppler shifted hydrogen absorption lines are seen in the spectrum of a star. The hydrogen line at 656.28 nm is seen to be shift
    9·1 answer
  • Two gas cylinders are identical. One contains the monatomic gas argon (Ar), and the other contains an equal mass of the monatomi
    12·1 answer
  • How many grams are in a mole of fluorine
    14·1 answer
  • PH for the solution which contain CO​
    7·1 answer
  • I'm lost....can anyone explain please?
    10·1 answer
  • An ice cube is dropped into boiling water. How will heat flow between the water and the ice cube?
    11·2 answers
  • A match burns because of what type(s) of properties?
    13·2 answers
  • Please help me out!!!
    7·2 answers
  • What is the final volume of a 400 ML sample that is subjected To a temperature change from 22 Celsius to 30 Celsius in a pressur
    10·1 answer
  • How are people responsible for marine debris
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!