purpose of this lab is to find out how does the concentration of a saline solution affect the movement of the solvent molecules. Before the experiment‚ it was predicted that the saline solution in baggies would remain inside‚ without mixing with the water‚ and that the mass would not change. Throughout the experiment‚ the saline solution was added into the baggie‚ it was discovered that a small portion of the saline solution would leave the bag. In the baggie that has 0.2 percent concentration of
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and Its Background Introduction The term “Overpopulation” is the condition where the number of organisms exceeds the carrying capacity of their habitat. It has impacted the life of common man and has proved to be one of the gravest difficulties that have to be fought. It implies scarcity of resources and economic inflation; these are the monsters which can make life miserable. The purpose of the study is to discuss about overpopulation in our country specifically in Manila. Using
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Abstract In this experiment‚ the Ksp for calcium sulfate dihydrate‚ CaSO4·2H2O‚ by titrating 4 times a calcium sulfate dihydrate solution with diprotic EDTA‚ H2(EDTA)2-. For each trial we found the Ksp by means of molarities and activities. The results for the Ksp using only molarities was very different than the Ksp using activities. The average Ksp using molarity only was 2.26 x 10-4 and the average Ksp using activity turned out to be 2.31 x 10-5. The actual Ksp however‚ is 3.14 x 10-5. A percent
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Buffer solutions and common ion effect A buffer solution resists (or buffers) a change in its pH. That is‚ we can add a small amount of an acid or base to a buffer solution and the pH will change very little. How to calculate pH of buffer solution containing both acid and conjugate base? Dissociation constant definition 1.1 can be rearranged into or (note that due to sign change [A-] was moved to nominator). This is so called Henderson-Hasselbalch equation (or buffer equation)
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like a tired old whore that only tells you what you want to hear. You watch stories everyday about the environment and some bits on global warming and they give you some tips you can do to help Mother Earth when the major problem is obviously overpopulation. That never comes up ever. In the US‚ Al Gore has to be pressed on the issue to admit that it is a problem. People say that it’s a passing fad‚ this desire to procreate. The news knows you don’t want to hear that. The news has no problem telling
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of industrialized countries are drastically greater than that of third-world countries. What comes with modernization is environmental destruction‚ and thus is unavoidable for those living in modern countries. Still‚ most attention regarding overpopulation is given to third-world countries. Because of the alarming rates of child mortality and other influences‚ inhabitants of these countries resort to having many children‚ children that they often cannot provide for. The overwhelming population of
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Domestic Animal Overpopulation. Do people ever think about how many stray animals are roaming the streets or in shelters? Thirty-five percent of pet owners do not spay or neuter their pets‚ so each year eight million stray animals end up in shelters each year. Only 3.5 million people adopt a pet from a shelter. The rest of the animals stay in the shelter and suffer in the cages waiting for a new home. Why do animals have to suffer in shelters‚ on the streets or in puppy mills because of irresponsible
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An investigation to find the water potential of potato and carrot tubers in a sucrose solution‚ of concentration 0.00 – 0.50Mol‚ over a 24 hour period Interpretation Written Communication C1 From our graph it can be seen that the concentration of sucrose solution is 0.18 M at 0% change in mass for the potato and 0.355 M at 0% change in mass for the carrot. I will use these values to find the solute potential by using the calibration graph. I will work out the water potential by using the
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Climate change is the change on the world’s climate. It is a significant and lasting change in the statistical distribution of weather patterns over periods ranging from decades to millions of years. It may be a change in average weather conditions‚ or in the distribution of weather around the average conditions (i.e.‚ more or fewer extreme weather events). Climate change is caused by factors that include oceanic processes (such as oceanic circulation)‚ biotic processes‚ variations in solar radiation
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Removal of Hexavalent and Total Chromium from Aqueous Solution by Avocado Shell Eliseo Cristiani-Urbina1‚*‚ Alma Rosa Netzahuatl-Muñoz1‚2‚ María del Carmen Cristiani-Urbina3 1 Escuela Nacional de Ciencias Biológicas‚ IPN. Prolongación de Carpio y Plan de Ayala s/n. Colonia Santo Tomás. México‚ D.F.‚ 11340‚ México. ecristia@encb.ipn.mx 2 Universidad Politécnica de Tlaxcala. Av. Universidad Politécnica No. 1. Colonia San Pedro Xalcaltzinco. Tepeyanco‚ Tlaxcala‚ 90180‚ México. 3 Universidad Autónoma
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