The clear plastic bottles used for carbonated beverages (sometimes also called “soda,” “pop,” or “soda pop”) are made from poly(ethylene terephthalate) (PET). The “fizz” in pop results from dissolved carbon dioxide (CO2); because PET is permeable to CO2, pop stored in PET bottles will eventually go “flat” (i.e., lose its fizz). A 20-oz. bottle of pop has a CO2 pressure of about 794 kPa inside the bottle, and the CO2 pressure outside the bottle is 7.6 kPa. Assuming conditions of steady-state, calculate the diffusion flux in cm3 at STP/cm2.s of CO2 through the wall of the bottle. The Permeability Constant of the PET bottle is 0.23 x 10^-13 cm3@STP.cm/cm2.s.Pa. Note: assume that each bottle has a surface area of 500 cm2 and a wall thickness of 0.04 cm. Answer in Scientific Notation example 1.1e-12. Round your answer to 2 significant figures.
The clear plastic bottles used for carbonated beverages (sometimes also called “soda,” “pop,” or “soda pop”) are made from poly(ethylene terephthalate) (PET). The “fizz” in pop results from dissolved carbon dioxide (CO2); because PET is permeable to CO2, pop stored in PET bottles will eventually go “flat” (i.e., lose its fizz). A 20-oz. bottle of pop has a CO2 pressure of about 794 kPa inside the bottle, and the CO2 pressure outside the bottle is 7.6 kPa. Assuming conditions of steady-state, calculate the diffusion flux in cm3 at STP/cm2.s of CO2 through the wall of the bottle. The Permeability Constant of the PET bottle is 0.23 x 10^-13 cm3@STP.cm/cm2.s.Pa. Note: assume that each bottle has a surface area of 500 cm2 and a wall thickness of 0.04 cm. Answer in Scientific Notation example 1.1e-12. Round your answer to 2 significant figures.
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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The clear plastic bottles used for carbonated beverages (sometimes also called
“soda,” “pop,” or “soda pop”) are made from poly(ethylene terephthalate)
(PET). The “fizz” in pop results from dissolved carbon dioxide (CO2); because
PET is permeable to CO2, pop stored in PET bottles will eventually go “flat”
(i.e., lose its fizz). A 20-oz. bottle of pop has a CO2 pressure of about 794 kPa
inside the bottle, and the CO2 pressure outside the bottle is 7.6 kPa.
Assuming conditions of steady-state, calculate the diffusion flux in cm3 at STP/cm2.s of CO2
through the wall of the bottle. The Permeability Constant of the PET bottle is 0.23 x 10^-13 cm3@STP.cm/cm2.s.Pa. Note: assume that each bottle has a surface area of 500 cm2 and a wall thickness of 0.04 cm. Answer in Scientific Notation example 1.1e-12.
Round your answer to 2 significant figures.
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