believe that the man is a ruthless and evil man. Before I am categorized as another lazy immigrant‚ allow me to explain my case. There is no doubt that I am close to being a forgotten victim of slavery. As mentioned‚ I am an immigrant; I am a alarm clock born in China. There were thousands of children in my family. I didn’t even know all of my own brothers and sisters before I was sent to America for work. I knew that I would not see any family heritance because of its size; however‚ I hoped to find
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Astronomical Clock “Tick tock‚ tick tock” is a common sound from today’s clocks. When traveling in Prague in the Czech Republic‚ the normal everyday clock is not to be found in front of “the Old Town Hall.” Instead‚ the Prague Astronomical Clock overshadows all other clocks with its magnificent craftsmanship. The delicate clock is filled with different mechanics that make it work‚ along with legends and stories to come along with it‚ and the many different times it tells. Normal clock mechanics
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History of Clocks and the Impact of Electricity on them. Introduction: In this poster we are going to show you the history and the development of the clock through time and how it has impacted society. We will also show how electricity has affected the development and effectiveness of clocks. Sun clock: One of the first clocks on record is the sun clock. Sun clocks basically work on the principle that the position of a stationary object’s shadow will be in the same place at a certain
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The servicescape plays a major role in the Clock Gate Tower in Youghal. As the service that is being offered here is intangible‚ the physical environment is used to create a sense of tangibility within the service in order for customers to gain a better experience (Vliet‚ 2013). It provides the visitors with a greater understanding of what the firm is offering and what the tour involves as it creates an image that brings the tour to life. The building itself immediately creates an image of what
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How do deaf people use telephones? What about doorbells and alarm clocks? There are many everyday devises that we hearing people take for granted‚ among these are telephones‚ smoke alarms‚ doorbells‚ and alarm clocks. When we look at how members of the deaf community use these everyday items we must consider that members within the community have very different communication needs‚ abilities‚ and preferences. Hard-of-hearing people for example can use a standard telephone with the addition of
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theoretical yield)/ theoretical x 100% = percent error Abs. (58.5 – 60)/ 60 x 100 = 2.5% Scheme of the Reaction (Exp.12a/12b): Analysis of Results: In this experiment‚ the compound diphenylacetylene was made by using potassium hydroxide to take the bromine off of the 1‚ 2-dibromo-1.2-diphenylethane. Pyridinium bromide perbromide was used rather than Br2 due to it being a volatile and highly corrosive substance. Calculate the theoretical yield which was 0.107g of diphenylacetylene. Calculate the percent
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Hydrocarbons Equipment Required: -4 Test tubes -Dropper - Cyclohexane (C6H12) (3ml) - Cyclohexene (C6H10) (3ml) - Toluene (CH3C6H5) (3ml) - Potassium Permanganate solution (KMnO4) .01 mol L-1 (4ml) - Sulfuric Acid (H2SO4) 2mol L-1 (2ml) - Bromine Water (Br2) (5ml) Procedure: Reaction of hydrocarbons with acidified permanganate: 1) Into three separate‚ labeled test tubes place 1 ml of cyclohexane‚ cyclohexene and toluene respectively. 2) In a separate test tube add 4 ml of 0.01mol L-1
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Apparatus: dropper‚ test tube‚ hot plate Chemical reagents: bromine‚ toluene‚ cyclohexane‚ cyclohexene‚ acidified KMnO4‚ dichloromethane Method A. Bromine test 1.6 clean and dry test tube were taken and were labelled them A until F 2.1ml of dichloromethane were placed into each test tube 3.1 ml of cyclohexane were placed into tubes A and B‚1 ml cyclohexene were placed into test tube C and D‚1ml toluene to test tube E and F 4. 5 drops of bromine water were placed into each test tube 5. Test tube A
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alkenes Aim: To compare the reactivities of an alkane and an alkene with bromine water and a solution of potassium permanganate (KMnO4). Equipment: • 4 test tubes • Test-tube rack • 4 pipettes Safety: safety glasses must be worn to prevent injury to the eyes. Ensure room is well ventilated whilst using the hydro carbons. Method: 1. Place 1 ml of sample A (cyclohexane) into a test tube containing 4 mls of the bromine water solution. Record observations of any reaction. 2. Place 1 ml of sample
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alkane and an alkene Hypothesis: The cyclohexene would react to the bromine water and turn colourless‚ whilst the cyclohexane won’t react. Risk Assessment: What’s the problem? | How do you fix? | How does it work? | Bromine water is corrosive to the skin | Wear gloves | Stops the Bromine water from reaching skin | Cyclohexane/ene is highly flammable | Keep away from naked flames. | No naked flame = no ignition. | Bromine water is very toxic if inhaled | Conduct experiment in fume cupboard
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