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Search results 2451 - 2460 of 5332 matching essays
- 2451: Tin
- ... by the ancients. Tin was an accidental discovery. Tin has been around for many years. Proof is in the fact that tin is mentioned in the old testament of the bible. Tin had a great effect on the world because of its low price, high electric conductivity, and because tin protects against rust and weak acids in food if the can is made out of tin instead of aluminum. Some common ...
- 2452: Through A Narrow Chink: An Ethical Dilemma
- ... the removal of the tissue. It was removed and we were told not to worry. Inquiring as to how such a young woman could have gotten cancer our doctor said it was a possible side effect of using the same Pill prescription for so long. We had never known this. If we had known we would never have used it! Personally, that scare was enough to prove to me that scientific ...
- 2453: The Element: Chlorine
- ... Toxicity and Precautions Chlorine was used in World War I as a poison gas. In fact most poisonous gases have chlorine in them. Chlorine is very corrosive to moist tissue and has a very irritating effect on the lungs and mucous membranes of the nose and throat. Inhalation of chlorine gas can cause edema of the lungs and respiratory stoppage. When hydrogen and chlorine gases are mixed together, the mixture is ...
- 2454: Thallium
- ... Thallium in every million parts of the Earths crust. Thallium compounds are extremely toxic. The negative effects are cumulative and can be taken in through the skin. Poisoning from Thallium takes several days to effect you and when it does, it hits the nervous system. Thallium should only be handled by trained professionals with the right equipment and safety precautions. Thallium deposits are occasionally found in Sweden and the Former ...
- 2455: Photochemical Smog
- ... defined. A consequent condition on the development at Pinjar was that SECWA undertake a study of the formation and distribution of photochemical smog in Perth, a particular outcome of which would be to determine the effect of the Pinjar power station's emissions on smog in the region. Given the DEP's concerns and responsibility in relation to urban air quality, the Perth Photochemical Smog Study (PPSS) was developed as a ...
- 2456: Iron
- ... same as gasoline is refined oil. One might think they are pretty similar but they are very different. Mining is considered to be extremely detrimental to the environment. Open pit mining has left a major effect on the surrounding environment. Large areas of land are literally dug up and large creators are left. The huge holes disrupt the environment and aren't aesthetic. However, some pits, such as those on the ...
- 2457: Intermolecular Bonding Essay
- ... to be formed by elements is corespondent to the octet rule, when atoms react,, they tend to do so in such a way that they attain an outer shell containing eight electrons. The factors that effect the formation of ions are ionization energy, electron affinity, lattice energy. Figure 1 The transfer of electrons involved in the formation of (a) sodium chloride and (b) calcium fluoride. Each atom forms an ion with ...
- 2458: Ethical Procedures and Guidelines Defining Psychological Research
- ... be justified because the results are purportedly supposed to assist in the betterment of the human race. The last area of ASA code lies in reporting information. The natural plagiarism laws are, as always, in effect. This is in addition to many precise scientific falsification laws. These state that a scientist may not falsify or fabricate information, first of all. Also, if a psychologist discovers any significant errors in the study ...
- 2459: Analysis of A Vapor Power Plant
- ... dt = Qcv-Wcv+Smi(hi) - Sme(he) Entropy Rate Balance dScv/dt = SQj/Tj + Smi(si) - Sme(se) + scv For simplicity, it is assumed in all calculations that kinetic and potential energy have a negligible effect. It is also assumed that each component in the cycle is analyzed as a control volume at steady state; and that each control volume suffers from no stray heat transfer from any component to its ...
- 2460: Acid Rain
- ... to react in great quantities. However in the soil there is a great collection of sulphur to aid the reaction. When it joins the water the pH becomes much lower. This is the most deadly effect of acid rain on our water!!! The water itself does not contain enough sulphur to kill off it's population of fish and plants. But with the sulphur in the soil it does. CONCLUSION: Acid ...
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