ACIDS‚ BASES AND SALTS 1. What are indicators? What are the different types of indicators? An indicator is a dye which changes colour when put into an acid or a base. The different kinds of indicators are- Natural indicators- Litmus is a natural indicator‚ litmus solution is a purple dye which is extracted from a plant called lichen. Litmus turns red in acidic solutions and blue in basic solutions. Other
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Chapter 18 Ethers & Epoxides; Thiols and Sulfides Assigned Reading from McMurry: Read Sections 18.1 through 18.9; not responsible for “Focus on … Epoxy Resins & Adhesives‚ pp. 697-698). Recommended Problems from McMurry: 18.1a-e;18.18.2;18.3a-d; 18.4; 18.5a-d; 18.6a-b; 18.7a-b; 18.8; 18.9; 18.10; 18.11; 18.12a‚b; 18.13a‚b; 18.14a-c; 18.16a-f; 18.17; 18.18; 18.19a-c; 18.20; 18.21; 18.22; 18.23a-e; 18.24a-I; 18.25a-f; 18.26a-d; 18.27; 18.28; 18.29ad; 18.30a-e; 18.31; 18.32; 18.33; 18.34; 18
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order for materials to move in/out of cells they must be small. high surface area: volume ratio. the larger the cell..the longer diffusion Diffusion- when a substance spontaneously moves from an area of high [ ] to an area of low [] osmosis- when H2o moves across a selectivly permeable membrane from an area of high [ ] to an area of low [ ] cell reproduction- the general process by which new cells are formed cell division- the process by which a parent cell divides into 2 daughter cells mitosis-
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water in metallic calorimeter (cm3) ±0.5 | Ethanol | 5.38 | 5.08 | 23.0 | 33.0 | 100.0 | Methanol | 5.33 | 4.94 | 24.0 | 34.0 | 100.0 | Isopropolic acid | 5.45 | 5.20 | 24.0 | 34.0 | 100.0 | Find the mass of water ρ=mv ρ (density) H2O = 1.0 g /cm3 Calculate % Uncertainty in mass of water As the mass of water is the same in the 3 alcohols the %uncertainty is the same for all the alcohols Absolute uncertainty of the measuring cylindermass of water × 100 Calculating Δ mass
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HCl + ZnCl2 C2H5Cl + H2O Isopropyl Alcohol (CH3) 2CHOH + HCl (CH3) 2CHCl + ZnC2 + H2O Tert-butyl Alcohol (CH3) 3COH + HCl + ZnCl2 (CH3) 3CCl + ZnCl2 +H2O Benzyl Alcohol C6H5CH2OH + HCl + ZnCl2 C6H5CH2Cl +ZnCl2 +H2O B. Oxidation of Alcohols Test Sample Equation Ethyl Alcohol C2H5OH + KMnO4 CH3COOH + H2O + MnO2 +K+ Isopropyl Alcohol 2(CH3)2CHOH + KMnO4 2(CH3) 2CO + 2H2O + MnO2 + K+ Tert-butyl Alcohol No reaction Benzyl Alcohol C6H5CH2OH + KMnO4 C6H5COOH + H2O +MnO2 + K+ Diethyl Ether
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Control: The Accepted Value Calories (160000)‚ Grams Per Serving (28g)‚ calories per Gram ( 5714): Estimate] Part 1 Table 1:Data | | Temp Initial | Temp. Final | Mass of Chip(Start) | Mass of Chip(After Burn | Temp of H2O after Burn | Calories | Serving Size | Volume of H2O (ml) | Trial #1 | 10 | 11 | 1.19 | 0.19 | 14 | 160 | 28 | 200 | Trial #2 | 11 | 14 | 1.17 | 0.16 | 14 | 160 | 28 | 200 | Trial #3 | 9 | 14 | 1.05 | 0.15 | 14 | 160 | 28 | 200 | Explanation: The Table Above‚ Shows the
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180 degrees H2O O Two 2 Linear Bent 109 degrees NH3 N One 3 Trigonal Planar 109 degrees H2S S 2 Linear Bent 90 degrees SO2 S One 2 Linear Bent 120 degrees PCl4+ P Zero 4 Tetrahedral 109 degrees NO3- N Zero 3 Trigonal Planar 120 degrees O3 O One 2 Linear Bent 120 degrees Based on their molecular geometries‚ which of the molecules (not including the polyatomic ions) are polar? (3 points) NH3‚ HCN‚ H2O‚ SO2 are all
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Hip Hop has gotten too hard core‚ it’s only about misogynist and materialism. Back in the day rappers had more to talk about than guns‚ money‚ jewels‚ cars and women. In today’s Hip Hop‚ it glorifies the ghetto‚ gangs‚ guns‚ money and jewelry which reinforces the tradition of the black stereotypes. Gangster rap is described as the angriest type of rap music where it glamorizes sex and violence. N.W.A was one of the most controversial rap groups in the world of hip hop who are known as the creators
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Potassium Chloride + Oxygen = KClO3 ------> KCl + O2 KClO3 ------> KCl + O2 Balanced = 2KClO3 ------> 2KCl + 3O2 3. FeCl3 + 3NaOH = Fe(OH)3 + 3NaCl 4. Zn (s) + H2SO4 (aq) = ZnSO4 (aq) + H2 (g) 5. CuS + HNO3 -> CuSO4 + H2O + N2O CuS + 2 HNO3 -> CuSO4 + H2O + N2O Chemical Reaction is a process that involves rearrangement of the molecular or ionic structure of a substance‚ as opposed to a change in physical form or a nuclear reaction. Reactant is a substance participating in a chemical
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Depends on: 1) solubility of the compound 2) differences in solubility of the desired solutes & impurities dissolved in the solvent - Common Solvents Used: Solvent | Formula | Polarity | Boiling Pt. (oC) | Water | H2O | Very Polar | 100 | Ethanol | CH3CH2OH | Polar | 78 | Methanol | CH3OH | Polar | 65 | dichloromethane | CH2Cl2 | Slightly Polar | 40 | Diethyl ether | (CH3CH2)2O | Slightly Polar | 35 | IV. Experimental 0.100 g of powdered impure benzoic
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