Describe how perfume molecules travel from the bottle to your nose. What is mean free path?

Name: Problem 21, Chapter 10: Chemistry: Structure and Properties
Uploaded: 2019-09-11T11:42:14-08:00
Duration: 4 min 6 s
Channel: Kevin Chimex
Description: Describe how perfume molecules travel from the bottle to your nose. What is mean free path?

Describe how perfume molecules travel from the bottle to...

Key Concepts

Diffusion

Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. This spontaneous spread occurs as molecules randomly move and collide, leading to an even distribution over time. It is a fundamental mechanism in processes such as the distribution of scents or gases in the atmosphere.

Kinetic Theory of Gases

The kinetic theory of gases explains the behavior of gas molecules in terms of motion and collisions. It describes how molecules constantly move in random directions at various speeds, colliding with each other and with surfaces. This theory helps in understanding how molecules travel through space, such as how perfume molecules disperse through the air.

Mean Free Path

Mean free path is the average distance a molecule travels before colliding with another molecule. In the context of gases, it quantifies the extent of free movement available to a molecule, which is key to understanding the diffusion process. The mean free path depends on factors such as the density and temperature of the gas.

Transcript

00:01 This question wants us to describe our perfume molecules travel from body to her nose.

00:07 What is the main to the path? so, perfume molecules, of course, you know, the perfume is liquid, but when you spray it, you kind of nebulize it that you convert it into like a mist, from liquid to mist.

00:26 And then the mist will change to the gas molecules.

00:31 So although the most molecules in perfurturelbother have higher molar mass than nitrogen, which is about 78 % of the herd, the velocities of this molecule are still onward, like 100 of meters per seconds, which means that even though the gaseous molecule travel a tremendous space, they also travel in very random paths, which is something that is kind of normal for gas.

01:02 Molecules.

01:06 So the path from the perfume bottle in the bathroom maybe to your nose which is two meter away is much like the path through her business shopping mall during a clear sale.

01:19 The molecule travel only a short distance before it collides with another molecule changing the direction only to collide again with another molecule changing its direction and that keeps colliding and until it gets to your nose and this the rate at which this happens is very fast because it's gas molecule and the speed is in hundred of meters per seconds so the question is asking us what the mifri path is so a molecule in the hair experience several billion collisions every second so the average distance that the molecule can travel between collision is called a mifripap so if you have like a molecule is this, so this is the molecule of interest and these are just surrounding molecule.

02:31 So the main free path will be the molecule travel eats this one, then it advances off.

02:44 So it bounces off, it comes here and then it meets another one.

02:55 I don't know how to describe this correctly...

Please give Ace some feedback