Investigating the rate of diffusion of ammonia
Investigating the rate of diffusion of hydrochloric acid in agar
Planning
You can change different things you do to an experiment like the
amount of acid, temperature, size of the agar or concentration of the
acid.
We can measure/observe on how long it takes to diffuse or the amount
diffused each minute.
My partner and I are going to predict and measure the rough time it
will take to diffuse at different temperatures.
The factors that may affect the readings of our results are if the
temperature of the room may reduce the temperature of our water baths
or if the windows open.
There may be a human error were the person which is timing may not
get it exactly correct or you may not be able to measure the amount of
acid correctly.
We are going to do the experiment three times and work out the mean
time by adding the times together then dividing by however many
readings you’ve added. You have to do them three times just in case
the temperature varied. But you should get them roughly around a time.
To make it a fair test you must only change one factor. The factors
that we are keeping the same are the amount of acid you test it in,
the size of the agar cube and the container you do the experiment in.
You have to keep the container the same because with a wider container
will make it seem like there is only a small amount of acid were as a
boiling tube would make it seem like there is quite a lot. The factor
that we are changing is the temperature of the water bath, which we
will keep it in for however long it takes to diffuse.
I predict that the higher the temperature of Hydrochloric acid , the
faster it will diffuse.
Found my information at www.britannica.com
What are the factors that affect chemical reaction rate?
Answer: foundation energy, temperature, method, concentrations,
particle size, and surface area
Reactive impact: Chemical reaction takes place only when two reactants
collide under the right conditions. The higher the temperature the
more reactants with kinetic energy above the activation energy
Effect of temperature—increasing temperature to overcome the
activation energy barrier and to increase entropy (a measure of the
confusion of the molecules in a substance)
Effect of concentration—increasing colliding frequency
When you heat a solution up the partials speed up and in this case
move the partials in the agar so much it forms a chemical reaction.
The apparatuses we are going to use are: 1 cm² agar, boiling tubes,
water baths at different temperatures, ice, boiling tube rack,
Thus born The Woman Warrior, a chronicle of a Chinese American woman's personal sufferings and triumphs, of duplicities and truths, and of struggles and breakaways; a requiem for all the victims of the old culture whose soundless cries have not been heard and who died without a name, engulfed by the darkness and the silence. In her world then, at least, the failed heroine Fa Mu Lan is redeemed.
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If this does not occur then no chemical. reaction will take place. The reaction must also have enough energy. this can be affected by temperature, the more heat the particles have. the faster they move and so the more energy there is therefore more chance of successful in the collisions.
This paper will address some of the issues surrounding hate speech and its regulation. I will explain both Andrew Altman and Jonathan Rauch’s positions in the first two sections. The third section will be on what Altman might say to Rauch’s opposite views. I will then discuss my view that hate speech should never be regulated under any circumstance especially in the name of protecting someone’s psychology, feelings, or insecurities like Altman prescribes. In the end, I will conclude that we should not agree with Altman despite his well intentioned moral convictions to push for hate speech regulation. Although hate speech is a horrible act, people must learn to overcome and persevere through difficult situations and not leave it to the law to protect their feelings and insecurities.
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Outsourcing is a technique for companies to reassign specific responsibilities to external entities. There are several motivations for outsourcing including organizational, improvement, cost, and revenue advantages (Ghodeswar & Vaidyanathan, 2008).
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I am going to use a range of concentrations to enable me to get a good
Reactions occur when the particles of reactants collide together continuously. If they collide with sufficient energy, then they will react. The minimum amount of kinetic energy required for particles at the time of collision is called the activation energy and this theory is known as the ?collision theory?.
We have no gases and solids involved, therefore it is easy to deal with solutions. Similarly, the use of a catalyst complicates things, and if used incorrectly could alter the outcome of the experiment. The theory behind this experiment is that increasing the concentration can increase the rate of the reaction by increasing the rate of molecular collisions. GRAPH I will place the reaction mixture on a paper with a black cross drawn on it. When the cross is completely obscured, the reaction will be finished.
This meeting between the two particles can only take place on the surface area of the material. If the surface area of the material is increased, the particles gather more space to collide with each other with force. With a large surface area, the particles will have more area to work on so the collision probability will be high. A catalyst is a separate substance to the ones you use in your experiment and is used to speed up the reaction between the reactants.
Weigh accurately about 0.3 g and dissolve in 40 ml of me-thanol. Titrate with 0.1 M so-dium hydroxide.