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Test Tube Cm 3
802 wordsINFORMATION FOR PROBLEMS 1 - 5: 25 g KNO 3 and 25 g NaCl were place into 7. 2 gcm 3 of water, heated to 70 degrees and filtered. All necessary. 1. How much KNO 3 should be found in the filtrate? 2. Approximately how much NaCl should be found in the filtrate? 3. When filtered at 70 degrees, how much NaCl should be found on the filter 4. When the filtrate is cooled to 20 degrees, how much of the KNO 3 can be expected to crystallize (precipitate)? 5. About how much NaCl will precipitate in the filt...
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True Or False Group Of People
859 wordsWhat are the main difficulties human scientists confront when trying to provide explanations of human behaviour? What methods have been invented to circumvent these difficulties and to minimize their influence on the results that are obtained? Although many people in the field of human sciences try to get their disciplines to be recognized as pure sciences, there are many differences that distinguish the natural sciences from the human sciences. There is a certain kudos that comes with the natur...
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Hydrogen Bonds Hydrogen Ions
1,205 wordsProperties of Water Water is essential for life as we know it on earth. It is used by plants and animals for basic biological processes which would be impossible without the use of water. The origin of all life can be traced back to the water in the Earths precambrian seas. Water is also the universal solvent. It reacts with more elements and compounds than any other substance known to man. Water is a polar molecule made up of on atom of hydrogen and two atoms of oxygen. It is attracted to itsel...
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Costa Rica San Jose
963 wordsCosta Rica is officially known as the Republic of Costa Rica. It is 19, 575 square miles in size and has a population of approximately 3, 342, 000 people. It is bordered by Panama and Nicaragua. The capital of Costa Rica is San Jose. Its coastal areas are hot and humid and heavily forested. It has a large chain of volcanoes rising over 12, 000 feet. The official language of Costa Rica is Spanish. It is a democratic nation and has no military. Costa Rica has only 3 national newspapers. History Ch...
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Liquid Nitrogen Degrees F
890 wordsSince the beginning of time people have been trying new ideas for keeping things like food cold. Up until the early 20 th century ice was the best method for cooling perishable items, button we figured out a more efficient and affective way of keeping items cold. It was called the refrigerator. Soon after the introduction of the refrigerator we developed something called cryogenic freeing, which is freezing with very low temperatures. Cryogenic freezing is the study mater that is colder than tem...
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