Imperialism in the late 19th and early 20th centuries Pre Imperialism: Alaska purchase and sig Reason: remove Russian threat from N America‚ get raw materials Purchase: Sec of State Will Seward finalized with $7.2mil “Seward’s folly/ice box” Sig: Russian threat removed from N America Imperialistic Concepts (large/strong takes small/weak) Reasons for Imperialism: $ (economy)‚ naval bases‚ colonies b/c of overpopulation‚ humanitarian reasons “Influence of Sea Power upon History 1660-1783”
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Lime scale form when hot water is heated about 61’C. All the acids listed about remove lime scale because the ions in the acids react with the calcium ions in limescale to then form a soluble salt. The acids also react with the carbonates in lime scale to produce water and carbon dioxide. Then the whole solution washes out taking away as much lime scale and possible. Sulfamic acid The advantages of using sulfamic acid as a de-scaler are that it is the faster de-scaler which means it can give
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Non-renewable energies are effecting our environment for the worse. The search for new energy source such as alternative energy sources are starting to become an important factor in the human society. Solar power energy is one alternative energy source often over looked that our society should begin using. Solar power energy works like this‚ “When sunlight hits a solar panel‚ it makes electrons in the silicon move around. (Electrons are teeny tiny specks—they’re way too small for us to see‚ even
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Name: Date: Score: /72 INTRODUCTION TO ISOMERISM AND ALKENES EXERCISES 1. Draw the one constitutional isomer that is missing from column 1 of Model 1. (2 points) 2. Draw ten skeletal representations constitutional isomers missing from column 2 in Model 1 as you can. (Hint: Other than cyclohexane‚ there are 11 ways to draw a six-carbon backbone that contains a ring. Plus there are isomers of cyclohexane that do not contain a ring.) (10 points) 3. Are
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Lab #1 notes: The Discovery Process Types of microscopes: Dissecting: has 2 eyepieces and used for looking at a fly. Is 3D and used reflecting light Lower magnification‚ higher resolution Compound: has 1 eyepiece and is used for looking at a cross-section of a plant. 2D and uses transmitted light Higher magnification‚ lower resolution Microscope objectives include 4x‚ 10x‚ 40x‚ 100x‚ -As you move to a higher power‚ your field of view decreases -Parcentric: whatever is in the middle of
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Today‚ many countries are depending more and more on nuclear energy to produce electricity. Although‚ nuclear energy can bring many benefits‚ such as nuclear fission‚ which releases no carbon dioxide‚ it also brings many risks to many countries that use nuclear energy. This was proved‚ in many disasters that nuclear energy caused years ago‚ like the Chernobyl Disaster in April 26‚ 1986‚ which was said that‚ “the radiation released was to be 200 times that of Hiroshima and Nagasaki nuclear bombs
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Assessment 7 Question 1 of 12 The equilibrium constant Kp for the reaction CO(g) + Cl2(g) ↔ COCl2(g) is 5.62 x 1035 at 25°C. Calculate ΔGf° for COCl2 at 25°C. (ΔGf° for CO(g) = –137.3 kJ/mol at 25°C) PRIVATE "<INPUT TYPE=\"radio\" NAME=\"null_12_0\" VALUE=\"3\" DISABLED>" MACROBUTTON HTMLDirect A. –66.7 kJ/mol PRIVATE "<INPUT TYPE=\"radio\" NAME=\"null_12_0\" VALUE=\"1\" DISABLED>" MACROBUTTON HTMLDirect B. 188 kJ/mol PRIVATE "<INPUT TYPE=\"radio\" NAME=\"null_12_0\"
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CHAPTER-23 HW. Rahaf AlBathi 121114 Question 1 The electron configuration of a Ni2+ ion is: | A) [Ar]4s23d8 | | B) [Ar]4s23d6 | | C) [Ar]3d8 | | D) [Ar]3d6 | Question 2 The Fe3+ ion has _____ electrons in 3d orbitals. | A) 6 | | B) 5 | | C) 4 | | D) 3 | | E) 2 | Question 3 A ligand is: | A) a molecule or ion that has at least one lone pair of electrons | | B) a nucleophile | | C) a Lewis base | | D) part of a coordination compound |
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incorporated into the inks. Sometimes‚ the color change occurring at a temperature is permanent‚ and at other times the original color can be regained on cooling. Accordingly‚ we have an irreversible or reversible thermochromic system. The required chemistry can be adopted based on the end use. That means one can select an irreversible thermochromic system when a certain temperature crossing is to be monitored and a reversible system when the actual temperature range is to be monitored. The color change
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Organic Chemistry Laboratory Report. Experiment 1: Crystallization. Objectives: 1. To study the crystallization process. 2. To identify the best suitable solvent to use for the crystallization process. 3. Gain an experience in purifying an organic compound by the techniques of the crystallization. Introduction. Crystallization is a technique which chemists use to purify solid compounds. It is one of the fundamental procedures each chemist
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