Chemistry revision Atoms elements and compounds Atom-the smallest part of an element that can still be recognized as an element Element-a substance made up of only one type of atom. An element cannot be broken down chemically into any simpler substance Nucleus-middle of the atom‚ which contains protons and neutrons Electron-tiny particle‚ which surrounds the nucleus with a negative charge Compound-when two elements react and combine together which contain more than one element. There
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Empirical Formula of a Compound * Purpose: To determine the empirical formula of Magnesium Chloride. * Data 1. Mass of evaporating dish = 45.08g 2. Mass of evaporating dish and Magnesium = 45.17g 3. Mass of Magnesium: { 2 } – { 1 } = 0.09 4. Mass of evaporating dish and Magnesium Chloride First weighing = 45.48g (After heating and cooling) second weighing = 45.49g 5. Mass of Magnesium Chloride: { 4} – { 1 } = 0.41g
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Masculinity/ Femininity Dimension in the Last Samurai According to Hofstede‚ Masculinity/ Femininity dimension explains Masculinity: The way the samurais in the movie were portrait are in fact extremely accurate to those that existed in the 18th century. From as young as seven or eight years of age‚ boys we turned from kids into killing samurais. In one of the scene’s of the movie‚ we see two young boys learning to fight with wooden sticks. Although so young‚ their skills were already better
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In the cold beaker the dye molecules moved slowly because molecules move slower when cooled‚ but there was still movement because molecules are always moving. The reason that the dye molecules move is because the dye is made of matter‚ which is made of molecules and molecules are always moving. The reason that the blue dye molecules clumped together in the cold beaker is because molecules attract each other. As the blue dye molecules spread out‚ the spaces between all of them got larger. The dye
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formulation of questions can offer some support or be helpful‚ they do not excuse you from reassessing their validity and effectiveness for each question. So when you are developing your questionnaire questions you should pay attention to the following “ten rules for formulating questions”. You should also note that they are not fixed‚ irrevocable rules which can be followed blindly. The majority of the rules leave room for interpretation indeed – as you will see – they often contradict each other
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6 – 150 mL beakers were set up and a stir bar placed in each beaker. Each beaker was labeled with DI water‚ or the pH buffer that was going to be put in the beaker. 50 mL of each of the 5 assigned pH buffers and DI water were obtained using a graduated cylinder and placed in the corresponding beaker. Each of the beakers containing the pH buffer and DI water were placed on the stir plate and the stir plate turned on. A sample of salicylic acid was obtained in a weigh boat and taken back to the lab
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interesting questions. I am extremely broad‚ that I overlap with all the other natural sciences. I am the fundamental unit of matter-the atom-only to be seen by the utmost effective microscope. I prosper in the dashing‚ fiery flames in a fragile glass beaker over a bunsen burner and develop powerful rocket fuels. I am a clamorous explosion of two flammable chemicals intermixed in a laboratory. I am liquid flowing from one tube to another‚ "volumous" gas‚ and clustered solids. I am the most abundant element
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Christina PENNE S1523228 Class : Het Beeld van de Ander THE REPRESENTATION OF BLACK WOMEN IN BRAZILIAN CULTURE According to professor Henry Louis Gates Jr. “Brazil is a hybrid nation‚ right down to its genes”. Looks can be deceiving‚ because although half of Brazil’s population is of African descent‚ almost every Brazilian has some black DNA‚ which proves that reality isn’t always black or white… Nevertheless Brazil is depicted as a white society to
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jkdhfjkahfjkhttps://www.youtube.com/watch?v=G99q6e89rJM - Telemedicine Aids Rural Areas https://www.youtube.com/watch?v=KsZLHwW3cz8 - How Electricity is Produced https://www.youtube.com/watch?v=yO1myyuFXNA - RURAL HEALTHCARE DELIVERY USING MOBILE TECHNOLOGY https://www.youtube.com/watch?v=YMb9FhHBtvc - Waste to Energy Project - Appropriate Rural Technology Institute (ARTI) hj‚sdabgfdggfhsdjkgfhkrjehfuklergfhjkgfrehgf frgerhkrhhrjklgf ] rgf ft hfthy ftrghvh dgy jhj mky
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Atomic energy By: Hiram A. Murray III Background info The origin of the phrase atomic energy check in from the years of 1905-10. It is defined as energy released by reactions within atomic nuclei‚ as in nuclear fission or fusion. Now a days it is referred to Nuclear energy. Nuclear power uses fission (splitting atom nuclei) to produce energy. Atom nuclei is also none as the nucleus (center of the atom). Around 6% of the world’s energy and 14% of the world’s electricity is produced by nuclear
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