# 0.10 Physical properties of gases

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## Objectives

• Learn and understand physical properties of gases and explain observations in terms of the kinetic molecular theory of gases.
• Plot and calculate the root mean square speed of the Carvone molecules. (Comparison with speed in vacuum).
• Estimate volume and volume change of a balloon when it goes from room temperature (RT) to liquid nitrogen temperature.
• Observe and explain behavior of gas in: a soda can, a balloon in a flask, Cartesian diver, etc., when a change in pressure or temperature is applied.

You grade will be determined according to the following:

• Pre-lab (10%)
• Lab Report Form (80%)
• TA points (10%)

## Introduction

Expanding and contracting balloons, imploding soda cans, exploding marshmallows are just some of the demonstrations that are often used to illustrate the empirical gas laws and the kinetic molecular theory of gases. In this experiment, you will be performing these and other‘demonstrations’and using your understanding of the physical properties of gases to explain your observations.

CAUTION: Important Safety Notes:

Remember to use tongs, hot grips as appropriate when dealing with hot liquids, vapors and containers.

Liquid nitrogen is extremely cold, with a boiling point of -196C and if it comes into contact with skin can result in severe frostbite.

The vacuum dessicator should be regarded as a potential implosion hazard when evacuated. Handle it carefully.

When doing the egg experiment do not put hot flask immediately in the water bath (let it for at least 3 minutes sitting on the bench) it will crack and you may have to pay for it if it breaks.

Observe and record what happens in your laboratory report form.

You are encouraged to discuss among yourselves possible explanations to your observations.

## Diffusion:

The goal of this experiment is to measure the rate of diffusion of Carvone, a major component of spearmint oil. Find an area where there are few drafts and the air does not already smell of spearmint. (You may go to the hallway to perform the experiment)

Stand in a line, with the first person in the group holding the bottle of Carvone and several paper towels. All four people should be 1 meter apart. You will need to know the distance each person is from the bottle of Carvone. The fourth person should act as the timekeeper. When the timekeeper gives the signal, the first person should place a few drops of Carvone on the paper towels. Record the time that it takes for each person to smell the Carvone. Seal the paper towel in a plastic bag when you are finished.

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Joseph
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no can't
Lohitha
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nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
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da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
revolt
da
Application of nanotechnology in medicine
has a lot of application modern world
Kamaluddeen
yes
narayan
what is variations in raman spectra for nanomaterials
ya I also want to know the raman spectra
Bhagvanji
I only see partial conversation and what's the question here!
what about nanotechnology for water purification
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
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Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
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Alexandre
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Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
what king of growth are you checking .?
Renato
how did you get the value of 2000N.What calculations are needed to arrive at it
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