CHNG 1103 INTRODUCTION OF MATERIAL AND ENERGY TRANSFORMATIONS COURSE NOTES PART A: MATERIAL BALANCE GENERAL INFORMATION LECTURERS Dr. Marjorie Valix (Part A: Material Balance) email: mvalix@usyd.edu.au office: Rm 444 Chemical Engineering Blg. Phone: 93514995 (Direct) or 9351 2455 (General Office/Messages) Dr. Vincent Gomes (Part B: Energy Balance) Email: vgomes@usyd.edu.ua Office: Rm 452 Chemical Engineering Blg. Phone: 9351 4868 TEXTBOOK R.M. Felder and R.W. Rousseau “ Elementary
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Enzymes are responsible for many crucial processes in living cells since they accelerate chemical reactions which would occur too slowly‚ or would lead to different products without their contribution. Enzymes are biocatalysts that usually show high affinity to a specific substrate under particular environmental conditions. The binding of the substrate and catalysis take place at a specific small region‚ around 10 amino acids‚ in the enzyme known as active site which usually represents a hydrophobic
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Calculations: HNO3 (16M)- 0.15 mL* (0.016 mole/mL) = 0.0024 mole* (1000 mmol/mole) = 2.4 mmoles H2SO4 (18M)- 0.60 mL* (0.018 mole/mL) = 0.0108 mole*(1000 mmol/mole) = 10.8 mmoles Limiting Reagent Calculation: methylbenzoate - 2.0 mL*(1.088g/mL)/( 136.00g/mol)= 0.016 mol Methylbenzoate is limiting reagent because
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points) 2. Determine the partial pressure of the hydrogen gas collected in the gas collection tube. (3 points) 3. Calculate the moles of hydrogen gas collected. (4 points) n = [pic] 4. If magnesium was the limiting reactant in this lab‚ calculate the theoretical yield of the gaseous product. Show all steps of your calculation. (4 points) 5. Determine the percent yield of this reaction‚ showing all steps of your calculation. (3 points) Percent
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Purpose: To determine the general rate law for the reaction of S2O82- + I- through a series of experiments and calculations. Materials: -Temperature probe -3 large test tubes -3 rubber stoppers -Pipets -0.20 M KI soln -0.20 M NaCl soln -0.010 M Na2S2O3 soln -2% starch soln -0.20 M K2SO4 -0.20 M K2S2O8 -0.2 M CuSO4 -Timer or stopwatch -Small beaker -Hot water Procedure: Refer to Lab #12‚ No changes Data: Table #1: Quantitative/Qualitative Observations Room Temp: 25.4°C
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Esmeralda Curiel Organic Chemistry October 21‚ 2014 Experiment 41- 1‚4-Diphenyl-1‚3-Butadiene INTRODUCTION The study of the Wittig Reaction is important because it is often used to form alkenes from carbonyl compounds. The purpose of this experiment is to isolate the trans‚ trans-1‚4-diphenyl-1‚3-butadiene‚ which is formed by a Wittig reaction along with the cis‚ trans isomeric diene. The reaction is carried out in two steps. First the Wittig salt is obtained through a simple nucleophilic displacement
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Dehydrating Cyclohexanol • Introduction The purpose of the lab experiment is to prepare cyclohexene from cyclohexanol through an acid-catalyzed dehydration. In order to produce the cyclohexene from cyclohexanol‚ an elimination reaction was performed. First by protonating the oxygen of the alcohol and creating an oxonium ion we replaced the poor leaving group (OH) into a better leaving group (OH2+). Second‚ dehydrating the cyclohexanol using phosphoric acid and sulfuric acid as acid catalysts
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= 45.11% N Convert % to moles‚ find the ratio in whole number‚ empirical formula. 21. Balancing Equation: Reactants = Products CH4 (g) + 2O2(g) = CO2 (g)+ 2H2O(l) 1C‚ 4H + 4 O = 1C‚ 2O‚ 4H‚ 2O 1mole of CH4+ 2 moles of O2= 1 mole of CO2+ 2 moles of H2O 16 g of CH4+ 32 x 2 g of O2 = 44 g of CO2+ 36 g of H2O 80 g reactants=80g Products 6.022 x 1023 + 2 x 6.022 x 1023 =6.022 x 1023 +2 x 6.022 x 1023
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Experiment I: Thermochemistry Background: Thermochemistry is the branch of chemistry that focuses on the studies of chemical reactions or physical changes and heat associated with chemical reactions. According to the first law of thermodynamics‚ energy cannot be created or destroyed but it can be converted from one form into another and/or transferred between different atoms‚ molecules‚ or substances. In general‚ energy can be classified into two categories: kinetic and potential. Kinetic energy
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with an alcohol in the presence of an acid catalyst. Theory: Synthesize isopentyl acetate by combining isopentyl alcohol with acetic acid and sulfuric acid and then heating the reaction mixture under reflux for an hour. The alcohol is the limiting reactant‚ so it should be weighed/ the acids can be measured by volume. The esterification reaction is reversible‚ and it has an equilibrium constant of approximately 4.2. A pure component can be obtained from a mixture by separating it from all other
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