1.1 The number of molecules crossing a unit area per unit time in one direction is given by N =-no where n is the number of molecules per unit volume and v is the average molecular velocity. As the average molecular velocity is approximately equal to the speed of sound in a perfect gas, estimate the number of molecules crossing a circular hole 10-3 in. in diameter. Assume that the gas is at standard conditions. At standard conditions, there are 4 × 1020 molecules per in.³.
1.1 The number of molecules crossing a unit area per unit time in one direction is given by N =-no where n is the number of molecules per unit volume and v is the average molecular velocity. As the average molecular velocity is approximately equal to the speed of sound in a perfect gas, estimate the number of molecules crossing a circular hole 10-3 in. in diameter. Assume that the gas is at standard conditions. At standard conditions, there are 4 × 1020 molecules per in.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:1.1 The number of molecules crossing a unit area per unit time
in one direction is given by
N =-no
where n is the number of molecules per unit volume and v is the
average molecular velocity. As the average molecular velocity is
approximately equal to the speed of sound in a perfect gas,
estimate the number of molecules crossing a circular hole
10-3 in. in diameter. Assume that the gas is at standard conditions.
At standard conditions, there are 4 × 1020 molecules per in.³.
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