The molecular weight of a long-chain molecule is equal to the molecular weight of a ______________unit times the number of ______________units.

Fill in the blank(s) with the appropriate word(s).


mer

Physics & Space Science

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An example of a sedimentary rock is

a. granite. b. gneiss. c. gabbro. d. shale.

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Which of the following materials is not cross-linked?

(a) Rubber (b) Epoxy (c) UHMWPE (d) Polyester

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Helium condenses into the liquid phase at approximately 4 K. What temperature, in degrees Fahrenheit, does this correspond to?

a. ?182 b. ?269 c. ?118 d. ?452 e. ?484

Physics & Space Science