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    1) What is the purpose of ice or cold water? To cool down the gas so that it condenses and turns into a liquid. 2) when the gas collecting tube is upside down‚ give a property of this gas. It is less dense than air. 3) Why is a pencil used in drawing the origin line in chromatography? If pen was used‚ it will dissolve giving colours and so‚ the experiment won’t be accurate. Pencil doesn’t interfere with the results. 4) When using ethanol‚ give a better apparatus arrangement‚ and why? Cover

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    Ink Made from Teabags

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    * Ink Made from Tea bags * 1. Background of the Study Tea is created by using the leaves of a plantknown as Camellis sinensis. This plant is native tomainland China‚ South and Southeast Asia‚ but it istoday cultivated across the world in tropical andsubtropical regions. It is an evergreen shrub orsmall tree that is usually trimmed to below 2 m(6.6 ft) when cultivated for its leaves. It has astrong taproot. The flowers are yellow-white‚ 2.5-4cm (0.98-1.6 in) in diameter‚ with 7 to 8 petals.

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    the Periodic Table Split? Non-metals: These are the elements on right side of line‚ as well as hydrogen‚ which is‚ which is in-group 1 because it only has 1 electron on its outer shell. Non-metals cannot conduct electricity except carbon (in the graphite form) because it has 1 electron “free” this allows electricity to conduct in carbon but not as well as metals. So it’s used as a carbon resistor. They also can’t conduct heat well. This is again due to the fact that non-metals don’t have enough “free”

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    work in some kinds of orders. Therefore‚ I am astonished of how Mother Nature works. Everything has its place. It is amazing that electrons‚ which can move at hundreds meters per second‚ can stay within the orbital of a 10-14 m atom. Diamonds and graphite are essentially the same in nature – carbon‚ but a difference between the arrangements – sp2 and sp3 hybridization – is all it needs to differentiate a luxurious jewelry from a humble pencil. Nature forms crystals in a similar way as an architect

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    Thermo Chem

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    Enthalpy changes can be calculated using average bond enthalpy data. i) The enthalpy change to convert methane into gaseous atoms is shown below. [pic] Calculate the average bond enthalpy of a C—H bond in methane. [1] ii) Use the data in the table below and your answer to (a)(i) to calculate the enthalpy change for [pic] [3] [pic] b) The standard enthalpy of formation of 1‚2-dibromoethane‚ CH2BrCH2Br‚ is – 37.8 kJmol-1. Suggest the main reason for

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    Polavaram Dam Project

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    Polavaram Project is a multi-purpose irrigation project which has been accorded national project status by the central government.[1] This dam across the Godavari River is under construction. It is located in West Godavari district in Andhra Pradesh state of India. PURPOSE National River-Linking Project‚ which works under the aegis of the Indian Ministry of Water Resources‚ was designed to overcome the deficit in water in the country. As a part of this plan‚ surplus water from the Himalayanrivers

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    measurement is a. precision. b. repeatability. c. accuracy. d. exactness. e. the number of S.F. 2. The distance between atoms is sometimes given in picometers where 1 pm is equivalent to 1 x 10-12 m. If the distance between the layers of carbon atoms in graphite is 3.35 x 10-8 cm‚ what is this distance in picometers? a. 0.335 b. 3.35 c. 335 d. 3‚350 e.

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    Aviation Paper

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    Aviation Aviation Aviation is a field of study for science‚ math‚ and engineering‚ a career path‚ and a source of obsession for many people. It shapes the world people live in today‚ often without them even knowing‚ or rather thinking about it. Winston Churchill once said “Air power may either end war‚ or end civilization” (“Air Power”). This quote represents aeronautics’ importance in the aspect of military endeavor‚ which is a major part of the world. Aviation is

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    Returning to the upscale condo he was living in‚ 19-year-old Gregory Jeffrey Drake looked through the mail he had received. There were multiple checks‚ a bank statement‚ and the bills he had to pay. At his parents’ requests‚ Gregory had started business school‚ learning about the benefits of owning realty and how to use the stock market. Even though they forced the business school‚ they had given him a sizeable sum to get him started when he turned 18. They were wealthy‚ but forced him to make his

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    The Hunger Games

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    The Hunger Games. An Essay By: Yaressi Esquivel INTRODUCTION ‘’War‚ terrible war. Widows‚ orphans‚ a motherless child. This was the uprising that rocked our land. Thirteen districts rebelled against the country that fed them‚ loved them‚ protected them. Brother turned on brother until nothing remained. And then came the peace‚ hard fought‚ sorely won. A people rose up from the ashes and a new era was born. But freedom has a cost. When the traitors were defeated‚ we swore as a nation we would

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