Biology, 23.10.2019 03:00, sedilei1515
List two molecular characteristics that are essential for elastomers. (1) for elastomers to experience relatively large elastic deformations, the onset of plastic deformations must be delayed and (2) elastomers must have huge molecular weight. (1) elastomers must experience a rise in temperature when stretched and (2) the modulus of elasticity decreases with increasing temperature (1) elastomer must not easily crystallize and (2) the lowest temperature at which rubber-like behavior persists is between -50 and -90°c. (1) elastomers must be amorphous, having chains that are extensively coiled and kinked in the unstressed state and (2) there must be some crosslinking
Answers: 3
Biology, 21.06.2019 13:30, natlovesfood
Which of the following substances is not involved in the chemical reaction that pro- duces smog? a. sunlight b. particulate matter c. automotive exhaust d. ozone
Answers: 2
Biology, 22.06.2019 07:00, cheyenneisaboss22
Which statement best describes how the loudness of the sound affects the high-pressure region created by the sound wave? a. a louder sound has no effect on the pressure created. b. a louder sound means a high-pressure region that is higher. c. a louder sound means a high-pressure region that is not as high.
Answers: 1
Biology, 22.06.2019 15:00, cdeanrn8971
The scales shown in the introduction measure mass, or the amount of matter in a particular object. the scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. did the simulation support this scientific law? explain why or why not.
Answers: 1
List two molecular characteristics that are essential for elastomers. (1) for elastomers to experien...
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