Molar Mass by Freezing Point Depression November 28‚ 2012 NAME Lab partner- Purpose: To determine the molar mass of an unknown substance by measuring the freezing point depression of a solution of an unknown substance and BHT. Equipment: Test tube‚ 18*150 millimeters Wire stirrer Weighing dish Timer‚ seconds Chemicals: 2‚ 6-Di-tert-butyl-4-methylphenol‚ BHT‚ 16 grams Cetyl alcohol‚ CH3(CH2)14CH2OH‚ 1 gram Unknown substance
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Ben Quinones AP Chem Mr. Perry 25 January 2013 Molar Mass by Freezing Point Depression Conclusion: My Lab unsuccessfully found the molar mass of the unknown given to us in the lab. We were tasked with finding the molar mass of an unknown compound using the colligative property of Freezing Point Depression. The way we did this was first finding the temperature at which ice crystals form for just regular BHT. Luckily thanks to our TA we were given temperature probes so we could pinpoint exact
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ENVIRONMENTAL ENGINEERING | RAIN WATER HARVESTING WITH CONTEXT TO BIKANER | KUNJ AGGARWAL | ENVIRONMENTAL ENGINEERING RAIN WATER HARVESTING WITH CONTEXT TO BIKANER Student’s name: Kunj Aggarwal * Introduction Rainwater harvesting (RWH) – practiced for more than 4‚000 years – in its broadest sense‚ is a technology used for collecting and storing rainwater for human consumption from rooftops‚ land surfaces or rock catchments. Rain water harvesting is a mini source water resource project
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‘An embryo is a person and has rights’ Abortion is a widely argued subject between many religious and ethical beliefs. Some believe that abortion can be allowed in some circumstances however others believe that as soon as the embryo is fertilised‚ it has rights and personhood begins. Roman Catholics and Conservative Protestants hold this view where life and personhood begins at conception. They are ‘Pro Life’ therefore they believe that abortion is wrong in every circumstance and thus should never
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pregnancy test to confirm the pregnancy and blood tests to check for any disease or infections of the patient. The last step before the actual procedure is imaging studies; or an ultrasound to check the status of the embryo or fetus. After this is complete‚ the method of aborting the embryo or fetus is chosen. There are three early abortion options that can effectively and safely terminate a pregnancy. These methods of abortion can be performed during the first trimester of your pregnancy (1-12 weeks)
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The federal government of Canada should allow the seal harvest to continue as seal harvesting is essential in the prevention of suffering and torment of all marine life and humans. For instance‚ without the process of seal harvesting‚ the ecosystem will be out of balance‚ resulting in complete chaos. Researchers estimated that seals consumed about 3.5 million metric tonnes of marine species in Atlantic Canada‚ and marine animals that are preys of seals such as salmon are in a great decline in population
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are explained and how the ambient vibrational energy can be used to charge these microsystems through piezoelectric and electromagnetic transducer. Inspite of development of MEMS industry‚ there are some of technical limitation of vibration energy harvesting systems which are to be
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Blank 4/9/02 Effects of Salts on the Freezing Point of Water In this experiment‚ you will study the effect that several solutes have on the Freezing Point of water. When a solute is dissolved in a liquid‚ the temperature at which that liquid freezes decreases‚ because the molecules of the solute become attached to the water molecules‚ making it more difficult for the water to form its crystaline shape and form into ice. This process is called Freezing Point Depression. In this experiment‚ you
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first-ever demonstration of artificial embryo twinning. His organism of choice was the sea urchin. The sea urchin is a relatively simple organism that is useful for studying development. Dreisch showed that it was completely possible to separate the cells by merely shaking two-celled sea urchin embryos. After the two cells were separated‚ the two sea urchin grew into full organisms. The purposes of this experiment was to show that each cell in the early stages of the embryo has its very own complete set of
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Human power-based energy harvesting strategies for mobile electronic devices a. Describe the application (10%) 1.2.3 Wearable or implantable medical devices Implantable or wearable medical devices refer to any device that could help monitor metabolic parameters‚ assist defective physical function or cure diseases. Structural devices such as artificial joints‚ vascular grafts and artificial valves are called passive devices and their working does not need external power. But active
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