The density of totally crystalline polypropylene at room temperature is 0.946 g/cm³. Also, at room temperature the unit cell for this material is monoclinic with the following lattice parameters: a = 0.666 nm ● α = 90° В = 99.62° c = 0.650 nm Y = 90° • If the volume of a monoclinic unit cell, V monoclinic, is a ● function of these lattice parameters as: V mono = abc sinß Determine the volume of the unit cell, the atomic weight of each repeating units, and the number of repeating units per unit cell. • b = 2.078 nm ● ● CH₂=CH Ac = 12.01 g/mol AH = 1.008 g/mol ● CH 3
The density of totally crystalline polypropylene at room temperature is 0.946 g/cm³. Also, at room temperature the unit cell for this material is monoclinic with the following lattice parameters: a = 0.666 nm ● α = 90° В = 99.62° c = 0.650 nm Y = 90° • If the volume of a monoclinic unit cell, V monoclinic, is a ● function of these lattice parameters as: V mono = abc sinß Determine the volume of the unit cell, the atomic weight of each repeating units, and the number of repeating units per unit cell. • b = 2.078 nm ● ● CH₂=CH Ac = 12.01 g/mol AH = 1.008 g/mol ● CH 3
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:The density of totally crystalline polypropylene
at room temperature is 0.946 g/cm³. Also, at room
temperature the unit cell for this material is monoclinic with
the following lattice parameters:
a = 0.666 nm
b = 2.078 nm
●
●
●
●
CH₂=CH Ac = 12.01 g/mol
Ас
AH = 1.008 g/mol
α = 90°
B = 99.62°
c = 0.650 nm
Y = 90°
If the volume of a monoclinic unit cell, Vmonoclinic, is a
function of these lattice parameters as:
V mono
= abc sinß
CH 3
Determine the volume of the unit cell, the atomic weight
of each repeating units, and the number of repeating
units per unit cell.
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