weighings. This procedure was repeated two more times and the average of the three measurements was recorded as the density. The boiling point was measured using a microscale device consisting of a capillary tube‚ a microcapillary tube and a melting point apparatus. The microcapillary tube was sealed on one end by rotating the end gently in a Bunsen burner flame until it was sealed. Care was taken to avoid overheating the tube which would cause it to bend. The larger capillary tube was heated
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Melting Permafrost’s Negative Contribution to Global Warming [pic] Global Warming is a problem that impacts the entire planet. The average temperature of our planet has risen about 0.5°C in the last 100 years. According to field biologist Wolter in 2008‚ the melting of permafrost in the colder regions of the world is mostly responsible for global warming; causing the world’s climate to be at risk. (Wolter‚ 2008) “Permafrost is any rock or soil that remains frozen constantly
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Pigs in America In America‚ three main pig varieties inhabit the country-- the tiny ones who have become popular pets‚ the chunky ones that roam around the farm‚ and the wilds ones who traipse through the backwoods. These creatures with wet snouts and curled tails‚ that waltz their way away around on their petite hooves stopping only to eat‚ sleep‚ or wallow in mud‚ have similar characteristics‚ but an all-inclusive different purpose. Each contributing to society in their own way‚ the pigs in the
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The argument of legalizing pot has been in question for years now. William Bennett‚ who served as the Secretary of Education under Ronald Reagan and a Drug Czar under H.W. Bush‚ wrote an article called “Legal Pot Is a Public Health Menace”‚ that is full of hard hitting facts. Though all his facts go against the legalization of pot‚ not all of them are trustworthy enough to decide whether or not to legalize pot. Most of Bennett’s facts are unrepresentative‚ unclear‚ or insufficient for the claim
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smoking marijuana. What most Americans don’t realize is the benefits that can come from legalizing marijuana because their minds are clouded by the stereotypes associated with the average ‘pot smoker’. Dismiss the corny jokes and stereotypes for a second and consider the truths that are unveiled. In Timothy Egan’s “Give Pot a Chance‚” Egan looks beyond the stigma of smoking weed and points out the benefits that will come from legalization. Although the government is wrongfully hindering us from legalizing
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The Pot of Gold at The End of The Troll Bridge GO TO PAPERRATER It was a wonderful spring time mourning when Peter the leprechaun set out on his quest to find his pot of gold just like any other leprechaun does when they come of age. Luckily for him and his village they don’t have to wait for it to rain because the rainbow that appears in the clover filled meadow is pretty smart for it knows when a leprechaun comes of age and that is when it will show it self but always in a different spot and in
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motion and heat transfer during melting and solidification of a pure metal {gallium) on a vertical wall. The measurements of the position of the phase-change boundary as well as of temperature distributions and temperature fluctuations were used as a qualitative indication of the natural convection flow regimes and structure in the melt during phase transformation taking place in a rectangular test cell heated or cooled from one of the vertical walls. For melting‚ the measured melt volume and heat
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By April 17‚ 1975‚ a communist group known as the Khmer Rouge‚ led by Pol Pot‚ finally overcame Khmer Republic forces and entered Cambodia’s capital city of Phnom Penh‚ and renaming the country Democratic Kampuchea; in which an estimated one and a half to three million people died. The Khmer Rouge had planned to create a form of agrarian socialism‚ which was founded on the ideals of Stalinism and Maoism. The Khmer Rouge’s polices ( of forced relocation of the population from urban centers
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repCHEMISTRY I - LABORATORY EXERCISE MANUAL LABORATORY EXERCISE 10: Melting Point and Boiling Point Determination This is a traditional lab. You’ll simply follow the step-by-step procedure‚ keeping records of your measurements and observations. Each student will write their own lab report‚ which should include the following: Name: Names of lab partners: Date of Experiment: Date Report Submitted TITLE: Purpose: A brief statement about what the experiment is designed to determine
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MIP experiment on the melting temperature of different polymers 8.1 Compare and comment on the results obtained. LDPE has the lowest average melting temperature (103.6°C) out of the 4 polymers. It is because LDPE is a linear polymer that has a branched structure which is able to expel the applied heat faster through the “branches” and melt faster. HPDE has the second lowest average melting temperature (139.5°C) out of the 4 polymers. Unlike LDPE‚ HDPE does not have a branched structure and the
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