Question

A single “unit” in Nylon 66 is made from one diaminohexane molecule and one adipoyl chloride...

A single “unit” in Nylon 66 is made from one diaminohexane molecule and one adipoyl chloride molecule.

a.A commercial sample of Nylon 66 was measured to have an average molecular weight of 68000 amu. How many units are in an average single molecule of this sample of Nylon 66?

b.The average length of one unit is 1.76 nm. How many units are in 1 inch of Nylon 66?

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Answer #1

a.) molecular weight of diaminohexane = 116.21 gm/ mole

molecular weight of adipoyl chloride = 183.028 gm / mole

Nylon 66 singal unit is made from 1 molecule of diaminohexane and 1 molcule of adipoyl chloride thus, molculat weight of single unit of Nylon 66 = 116.21 + 183.028 = 299.238 amu

68000 amu sample contain 68000 / 299.238 = 227.243 unit

227.238 unit are in a single molecule of sample of Nylon 66

b.) 1 inch = 25400000 nm

one unit have length 1.76 nm then in one inch contain 25400000 / 1.76 = 14431818.1818 unit

14431818.1818 unit of Nylon 66 in 1 inch of Nylon 66

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