| E1 | Blue dye and NaOCl | Solution remained Blue. When HCl is introduced‚ solution turned blue green | Blue-green solution | Blue-green solution | F1 | NaOCl and KI | Solution changed from clear to Green‚ with the addition of Starch‚ the solution turned Black | Black solution | Black solution | G1 | KI and PB(NO3)2 | Yellow precipitate formed | Yellow solution | Yellow solution | H1 | NaOH and Phenolphthalein | Solution changed from clear to Purple-red | Purple-red
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Making up Hydrogen Peroxide Volume required 250 cm3 and concentration required 0.1 moldm-3 Given concentration of H2O2 = 1.7 moldm¬-3 Number of moles (n¬¬¬¬¬¬¬¬¬¬¬) = Concentration (moldm-3) x Volume (dm-3) = 0.1 x 0.25 = 0.025 mol Volume (dm-3) = Number of Moles (n) X 1000 Concentration (moldm-3) = (0.025/1.7) x 1000 = 14.7 cm3 Distilled water required: 250 cm3 – 14.7
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water‚ therefore‚ I tell them to take a trip by air so I can cure them in air). Asi mahapurushan da mood hunda hai. Sanu pata hai keda best time hai tuhanu bless karan da. Je main 11 baje tuhanu bless karna hai te tusi 10 baje uth khade ho ke kaho ki asi hun jaana hai ta tusi meri blessings miss kar jaonge. Fir saadi mauj 5 saal nu aaye ya 50 saal nu‚ asi keh nai sakde. Is layi jadon mahapurush agya den‚ ta hi ghar jao (we‚ mahapurush have our moods. We know when it is the best time to bless you
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solution by mixing 33.2 g KI in distilled water and dilute to 100 mL 3. Dishwashing liquid – approximately 5 mL 4. Food coloring 5. Graduated cylinders – 500 mL and 10 mL 6. Large serving tray and rubber gloves to assist in cleanup 7. Measure 20 mL of 30% hydrogen peroxide into the graduated cylinder. Add 5 mL dishwashing liquid and 10 drops food coloring to the graduated cylinder and shake to mix contents‚ but not too vigorously to avoid foaming. Measure 5 mL of 2 M KI solution in 10 mL graduated
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|turned dark green |very dark green. | |NaOCl + KI |B5 |Light yellow |Darker yellow. | |NaOCl + KI + Starch |B5 |Dark purple/black |Black | |KI + Pb(NO3)2 |C5 |Thick yellow |Thick
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“East London Opium Smokers” The document entitled “East London Opium Smokers” is a document written by an anonymous author‚ very possibly because he did not want to be identified. The excerpt is a story of a journey into England’s Bluegate Fields in search of the “Opium Master” to obtain opium‚ his specific drug of choice. He claims that this man will teach him his trade‚ something more special than receiving the drug from any chemist or other distributor. However‚ it is acceptable to say the
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Haryanavi is the dominant mother tongue of Haryana. Hindi is spoken as spoken as a second language. Haryana is called the Land of Rotis because this is the main food item in Haryana. Tea‚ Buttermilk (Lassi)‚ Thandai are the local drinks. Bajra ki roti‚ Bajra Ki Khichdi and Bathua Ka Raitha are also popular food items.Women love to wear colourful dresses. The men generally wear white dhoti or pajama‚ white-coloured kurta‚ ’Pagri’. All-white attire is a status symbol for men. Women wear ghaggra‚ lehenga
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Title: The history of Haiti Purpose: To understand how Haiti became what it is and all the trials it has endured Thesis: In order to explain Haiti’s history I will discuss its location‚ when and how it became independent and Haiti today and also its early history Intro: Attention Getter: Who here has heard of the horrible plight of Haiti? Haiti has been through constant suffering everyday due to economic difficulty‚ lack of food‚ lack of clean water‚ hurricanes‚ and possibly everything
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Abby Cole Biology Summer Essay The human brain is extremely hard to understand; however‚ there are people in the world dedicated to understanding it. A Brief Tour of Human Consciousness‚ written by Dr. Vilayanur S. Ramachandran covers many topics regarding the brain‚ one of the more thoroughly covered topics is how the human brain works. This leads to the question‚ are humans set apart from other life on earth because of their brains? Although there is not as much knowledge of animals brains‚
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I- However‚ Iodine does not dissolve in water very well. In this case‚ standard solution of potassium iodate(V) is used to produce aqueous iodine. Excess potassium iodide and dilute sulphuric acid is added to react with potassium iodate. KIO3 + 5 KI + 3 H2SO4 -> 3 I2 + 3 H2O + 3 K2SO4 Excess potassium iodide also helps dissolving iodine produced. I-(aq) + I2(s) I3-(aq) Iodine does not react with ascorbic acid too quickly‚ that is why they cannot be titrated directly. We use excess iodine solution
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