MELTING POINT AND BOILING POINTS OF ORGANIC COMPOUNDS ABSTRACT The properties of organic compounds depend on their chemical structures. Intermolecular forces of attraction affect physical properties such as melting and boiling point. Through the Thomas Hoover apparatus‚ the melting point of 8 test compounds was determined. Salicylic acid exhibited the highest melting point while naphthalene‚ the lowest. The stronger the intermolecular forces of attraction‚ the higher the melting point. Boiling point
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Justin Davis Period 1 9/24/2012 The Bunsen Burner and Boiling Water The Bunsen Burner is a piece of laboratory equipment that produces a single flame which is used for heating‚ sterilizing‚ and combustion. The gas used in Bunsen burners can be natural gas like methane‚ or propane‚ butane‚ or a mixture of both which are all liquefied petroleum gas. The Bunsen burner was named after a man named Robert Bunsen. In 1855 Robert Bunsen invited the Bunsen burner and it is now used all over the world
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an egg will float in salt water. The question is how much salt is needed to be added to the water to make the egg float. The problem is that no one knows how much salt is needed to make an egg float. Hypothesis It will take at least three teaspoons of salt to be added to the water for the egg to float. The reason why I think three teaspoons of salt will need to be added to water for the egg to float is because the egg a density that is lower than the density of the salt water. Background information
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Fresh water always freezes at 0℃‚ but that is not always so for water with salt inside. The higher amount of salt there is in the water‚ the more the freezing point decreases. So‚ salt water freezes later than freshwater. The exact measurement of how they impact each other is this: every 5 psu increase‚ the freezing point decreases by 28%.. In an ocean‚ there is frazil and brine. Frazil are ice crystals suspended in water‚ and they are made of nearly pure freshwater. Frazil is the first stages of
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Marisela Andrade The Effects of Salt Water on Gummy Bears Facilitated diffusion depends on passive transport. Molecules cross cell membrane by diffusion. A type of diffusion is osmosis. If no energy is input into the system during diffusion‚ the molecules will reach a state of equilibrium. The purpose of this experiment was to study why the death occurred among those who drank salt water. Two blue gummy bears had a height of 2 centimeters each. The mass of these gummy bears together were
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Experiment 5: Percent Water in a Hydrated Salt Chemistry 1300 Instructor: 2/8/12 Abstract: The purpose of this experiment was to determine the percent by mass in a hydrated salt‚ as well as to learn to handle laboratory apparatus without touching it. The hydrated salt‚ calcium carbonate‚ was heated with high temperature to release water molecules. Gravimetric analysis was used in this experiment to determine the percent by mass of water in a hydrated salt. The hypothesis of this experiment
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Sometimes you will have a high level of salt or not enough chlorine. In order to maintain a safe swimming pool you need to be sure that everything is working as it should be. If you find that you are frequently running into problems one easy solution could be to monitor it more closely. If you
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RUNNING HEAD: AQUARIUM DIFFERENCES 1 Freshwater vs. Saltwater Aquariums C. Kevin Barr ENG121 Andrea Bear August 28‚ 2012 AQUARIUM DIFFERENCES 2 Freshwater vs. Saltwater Comparison There are many differences when it comes to freshwater versus saltwater aquariums. We ’ll try and shed some light on some of the differences when it comes to tank types‚ aquarium
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In the beginning salt water and regular water got along. They all lived in the same ocean and each droplet would live in harmony. They shared the undersea environment with all the fish and sea plants. Some plants and animals needed salt water more than fresh water and some needed fresh water more than salt water. This is where the problem all started. The fresh water began to become jealous because the salt water was mocking the fresh water about them being the best type of water. It started out
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SHORT INTRODUCTION TO TWO-PHASE FLOWS Condensation and boiling heat transfer Herv´ Lemonnier e DM2S/STMF/LIEFT‚ CEA/Grenoble‚ 38054 Grenoble Cedex 9 Ph. +33(0)4 38 78 45 40‚ herve.lemonnier@cea.fr herve.lemonnier.sci.free.fr/TPF/TPF.htm ECP‚ 2011-2012 HEAT TRANSFER MECHANISMS • Condensation heat transfer: – drop condensation – film condensation • Boiling heat transfer: – Pool boiling‚ natural convection‚ ´bullition en vase e – Convective boiling‚ forced convection‚ • Only for pure fluids. For mixtures
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