this would lead to the greatest temperature change. Procedure: 1. We converted our .02 moles of zinc to grams 2. Next‚ we measured our 80 ml of copper II sulfate and 20 ml of distilled water and combined them in a graduated cylinder. 3. We then weighed out our zinc. 4. Then‚ we poured the copper II sulfate solution into a double nested Styrofoam cup. 5. Then we poured the zinc into the Styrofoam cups and observed a temperature change. 6. Next‚ we poured the solution through
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www.igcse.at.ua ORGANIC CHEMISTRY OIL and its many useful PRODUCTS The origin of oil Crude oil is formed from organic material of the remains of plant and animal organisms that lived millions of years ago. These remains form sediments eg at the bottom of seas‚ and become buried under layers of sedimentary rock. They decay‚ without air (oxygen)‚ under the action of heat and pressure to form crude oil over millions of years. It is a fossil fuel because it is formed from
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In “Spring” by Chloe Honum written in 2009‚ the speaker discusses her life and how she handles it. The poem is written in the style of elegy. This means that it “most frequently used to morn a death‚ concluding in consolation‚ and composed in ABAB quatrain in iambic pentameter”(confound). In the first set of 4 lines she describes how her mother’s attempted suicide changed the way she lived. The second set takes on how things change and get better. Then she talks how things stay the same for a while
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Apeejay School Kolkata (WEST BENGAL) DEPARTMENT OF CHEMISTRY This is to satisfy that Ritika Kataruka bearing Roll no _______ Studyng in class XII (Science) of this institution has successfully completed the Chemistry Project. “To Study the quantity of casein present in different samples of Milk” Based on the syllabus of C.B.S.E. council for the session 2013-2014 AISSCE under my guidance and supervision and has given satisfactory account
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REVIEW a. I‚. • • C • • c. • C 3. The effective nuclear charge is a. equal to the suns of the charges of the protons in the nucleus b. equal to the suns of the charges of the protons in the nucleus minus the sum of the electrons in the Outer shell c. lest than tire sum of the charges of the protons in the nucleus due to shielding by the electrons in the outer shell d. lest than the sum of the charges of the protons in tire nucleus due to nisielding by the
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------------------------------------------------- Spring (season) From Wikipedia‚ the free encyclopedia "Spring festival" redirects here. For the Chinese celebration‚ see Spring Festival. For other uses‚ see Spring. Spring is one of the four conventional temperate seasons following winter and precedingsummer. The specific definition of the exact timing of "spring" varies according to local climate‚ cultures and customs. At the spring equinox‚ days are close to 12 hours long with day length increasing as the season progresses. Spring and
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tert-butyl methyl ether‚ what physical property of these liquids assures you that ether is the top layer? 2. Explain how a phenol can be separated from a mixture of a phenol and a neutral compound using the acid-base extraction method. 3. In this separation experiment‚ you first extract a carboxylic acid with NaHCO3(aq)‚ then extract a phenol with NaOH(aq). Can you reverse the order? Why or why not? 4. You perform each extraction twice‚ first with 1 mL and second with 0.15 mL.
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Summary: The movie takes place in Paris in 1913 and the 20th century. Igor Stravinsky’s on of Europe’s new composers. His ballet The Rite of Spring is about to make its premiere as we learned in class is the music is not liked by everyone to some people it is too modern and is a very controversial. There was one listener that liked the performance and that was Coco Chanel who was a well known fashion designer. She wore a beautiful white dress to the ballet. Now it 1920 and Igor Stravinsky has moved
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react‚ did the solution change color? What was responsible for this color change? (16 pts.) Yes‚ it changed to a green color and the ion responsible for it was Fe2+. Iron atoms were oxidized‚ giving two electrons to copper ions which were reduced. 3. What type of reaction was this? Why did it take place? Using the activity series of metals‚ explain why this reaction was possible. (16 pts.) Fe + Cu^+2(aq) ---> Fe^+2(aq) + Cu. This was a single displacement reaction. It took place‚ because the iron
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____ Course/Yr/Section: ____________ Date:_____________ Direction: Analyze and solve each problem carefully‚ write the solution on the space provided. Box your final answer/s. (10pts each) Determine the molar mass of the following: a. Al(NO3)3 b. ZnSO4 c. Ba(C2H3O2)2 d. NaHCO3 CH3COOH Calculate the percentage oxygen in the following compounds: a. Na2CO3 b. BaSO4 c. BaO d. Al2O3 e. H2SO4 Determine the empirical formula and the molecular formula of a compound containing
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