Do Cleaning Chemicals Clean As Well After They Have Been Frozen
.... its potency prior to
freezing. Accordingly, two test sets were created by the researcher. The purpose
of the test was to determine how well the chemicals could break down household
grease before and after the substances were frozen. The first test set would
focus on unfrozen chemicals, while the second was set up for previously frozen
chemicals.
The Test:
To start the experiment the researcher fried four pieces of bacon until
there was enough grease in the skillet to perform the test. He then put .....
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Ethical Procedures And Guidelines Defining Psychological Research
.... Another gray area in
psychology lies in the deception of subjects. There are some basic rules
guiding how deceptions can be carried out. There is a large section of the code
that was made with regards to animal research. The last major section of the
ASA ethical guidelines has to do with giving credit where credit is due, and
information sources. All of these regulations make research safer for the
subjects and increase the effectively of psychological research.
In psychological research, protectin .....
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Evaluating An Enthalpy Change That Cannot Be Measured Directly.
.... HCL was
measured using a measuring cylinder. The acid was then placed into the
polystyrene cup and its temperature was taken and recorded using the thermometer.
The pre-weighted sodium hydrogencarbonate was then added to the solution, and
the final temperature was recorded.
The contents of the cup were then emptied out and the cup was washed out with
water and then thoroughly dried. This was done three times for the sodium
hydrogen carbonate so that I could remove any anomalies that were obtained.
The ex .....
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Expansion On The Recent Discoveries Concerning Nitric Oxide
.... that it has not been until recently that it
was discovered in the body. The compound is quickly converted into nitrates and
nitrites by oxygen and water. Yet even its short-lived life, it has found many
functions within the body. Nitric oxide enables white blood cells to kill tumor
cells and bacteria, and it allows neurotransmitters to dilate blood vessels. It
also serves as a messenger for neurons, like a neurotransmitter. The compound
is also accountable for penile erections. Further experiments .....
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Frank J. Horgan Filtration Plant
.... contractors worked on this plant and were supervised by the Engineering
firm of James F. Macharen Limited. Although it is the newest plant, it had it’s
disasters. Their intake value exploded twice between 1980 and 1995 because of
the extreme pressure and Wight of the water. these incidents cause a shutdown of
the plant until they could repair it.
Production
The Frank J. Horgan Filtration Plant needs only one row materials to
operate, which is water. The plant is right next to lake Ontario, collec .....
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Fission Or Fusion
.... fission is rather low, but can be
increased by a factor of hundreds when the neutron is slowed down through a
series of elastic collisions with light nuclei such as hydrogen, deuterium, or
carbon. This fact is the basis for the design of practical energy-producing
fission reactors.
In December 1942 at the University of Chicago, the Italian physicist
Enrico Fermi succeeded in producing the first nuclear chain reaction. This was
done with an arrangement of natural uranium lumps distributed within a large .....
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Crash Course In Density
.... became useless.
They realized that they could not even make it to Winnipeg. Their only
chance was an abandoned to a abandoned Air Force airstrip. Unfortunately, the
airstrip had been converted to a race track, complete with race cars, fences,
and spectators. The 767 crash landed, and, fortunately, no one was killed.
Their were many contributing factors that made this plane run out of
fuel. First of all, the computerized fuel gauge was not working, and a
maintenance worker said , incorrectly, that .....
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Flouridation
.... but a lot of fluorine would be bad
(Behrman 182).
In 1938, with this information, Dr. Gerald Cox of the Mellon Institute
began to promote the addition of fluoride to public water systems, claiming that
it would reduce tooth decay, however there were two major obstacles in his path,
The American Medical Association, and The American Dental Association. Both
associations wrote articles in their journals about the dangers of fluoridation
of water supplies. The American Dental Association wrote the follow .....
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Fossil Fuels: Our Society's Dependency
.... with a synthetic plastic or
come up with something to substitute for plastic. The person who comes up with
the solution will become and instant millionaire and everyone will be happy.
There is one draw back of this way of solving problems, I mean sure it's great
to wait until the demand but we should still learn from our mistakes. We should
learn to plan ahead and see what the consequences could possibly be.
We still have other demands to meet, there are three major demands of
fossil fuels and they are .....
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Freezing Point Of Naphthalene
.... intervals, preferably 15 seconds. This
data will be used to make a chart later.
7. Once the temperature has fallen to 70o, melt the naphthalene
which is now frozen to remove the thermometer. Properly dispose of
the naphthalene liquid as instructed by the teacher.
IV. Data
Time Elapsed Temperature of Naphthalene Time
Temperature
Initial (0:00) 100oC 7:00
78.5oC
0:30 97.5oC 7:15
78.3oC
1:00 93.0oC 7:30
78.3oC
1:30 89.5oC 7:45
79.0oC
2:00 86.1oC 8:00
79.0oC .....
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Gallium
.... or concentrated in independant minerals, except for gallite. It is
extracted as a by-product from zinc blende, iron pyrites, bauxite, and
germanite.
Silvery white and soft enough to be cut with a knife, gallium takes on a
bluish tinge because of superficial oxidation. Unusual for its low melting
point ( about 30 degrees C, 86 degrees F ), gallium also expands upon
solidification and supercools readily, remaining a liquid at temperatures as
low as 0 degrees C ( 32 degrees F ).
Gallium has the .....
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Is Science Necessary For Our Future?
.... was ultimately a failure for morality. Frankenstein, upon
completion of his monster, realized the immorality of his work and rejected
it and disassociated himself from it and science. The result of
Frankenstein's immorality was death for just about everyone he loved and
utter despair for himself. The monster was not necessary for our future
and neither were the methods of his creation. Because of the doctor's
irresponsibility, he lost everything including his life.
The monster, spawned by the imm .....
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Geothermal Energy
.... these
issues, questions, and problems.
In the beginning when the solar system was young, the earth was still
forming, things were very different. A great mass of elements swirled around a
dense core in the middle. As time went on the accumulation elements with
similar physical properties into hot bodies caused a slow formation of a
crystalline barrier around the denser core. Hot bodies consisting of iron were
attracted to the core with greater force because they were more dense. These
hot bodies .....
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Ideal Gases Vs. Real Gases
.... are so small. Because of the differences between ideal
and real gases, Van der Waals created an equation to relate the two.
.....
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Insulation
.... colder. Each morning
many people wonder what to wear to stay as warm as possible, but they aren't
sure which material will keep them warmest. The experiment was chosen to see
which clothing insulator retains the most heat. "Insulation is material that
protects against heat, cold, electricity, or sound." (Science Encyclopedia,
1984). In this case the insulation will be protecting against a cold temperature.
The hypothesis is if denim, cotton T-shirt material, wool fabric,
polyester fabric, therma .....
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