Chemical dechlorination is a method for destroying PCB waste. How many kilograms of potassium ethoxide (KOEt, or KOC2H5) is needed to react with 450 kg of 2,3',4',5'-tetrachlorobiphenyl? (5 marks)
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- Calculate the theoretical yield of 2mL of vegetable oil saponification reaction with 2mL of 6M NaOH and 40mL of saturated salt solution(NaCl). GIVENS: density of the oil = 0.9 g/mL each fatty acid side chain of the oil has 18 C atoms (C_18: the carbonyl carbon, plus a C_17 carbon chain). Assume an average of one unsaturation per side chain.If the enthalpy of C12H22O11 combustion is said to be -5.65 x 103 kJ/mol, calculate the mass of C12H22O11 needed to be burned to produce 2.6 kJ of heat. (MM of sucrose: 342.3)(60 pts) In the following reaction between p-Acetaminophenol (C6H7NO)(s) and Acetic Anhydride (C4H6O3)(aq)Acetaminophen (C8H9NO2)(s) and Acetic Acid CH3COOH(aq) were formed. 0.157g of p-Acetaminophenol reacted with 0.48g of Acetic Anhydride and 0.198g of Acetaminophen was produced. SHOW WORK! C6H7NO(s) + C4H6O3(aq) → C8H9NO2 (s) + CH3COOH(aq) Calculate the moles of p-Acetaminophenol reacting. Calculate the moles of Acetic Anhydride reacting. Calculate the moles of Acetaminophen produced. What was the limiting reagent? Calculate the Theoretical Yield of Acetaminophen. Calculate the Percent Yield of Acetaminophen. Your Product (Aspirin) Produced.
- % Recovery of Ferrocene = (0.0459/0.102g) x 100 = 45% % Recovery of Acetylferrocene = (0.054/0.102g) x 100 = 52.9 % Question 1 : According to the data, what does % recovery means? can we say that acetylferrocene has a higher % recovery because the proportion of the amount of acetylferrocene present in the analytical portion of the 50:50 mixture is 7.9% higher than Ferrocene????? Question 2 :Am I calculating my %recovery correctly????K An oil company needs to fill orders for 91-octane gas, but only has 88- and 92-octane gas on hand. The octane rating is the percentage of isooctane in the standard fuel. How many liters of 88-octane gas should be mixed with 300 liters of 92-octane gasoline to get a mixture that is 91-octane gas? Let x be the amount of 88-octane gas used in the mixture. Complete the following chart. Type of Gas 88-octane 92-octane Mixture Quantity X 300 x+300 % Isooctane 88% 92% 91% Amount of Isooctane 0.91 (Simplify your answers. Use integers or decimals for any numbers in the expression.)13. Given 10g of MgC12 and 16g of AGNO3 and an actual yield of 1.099g of AgCl. How much excess reagent is USED up in the reaction? Rxn: _MgCI2 + _A9NO3 -> _AgCI + _Mg(NO3)2 0.13 g 4.63 g 5.13 g 4.49 g 2.51 g
- Most sugars can act as reducing agents. Could the dichromate reaction shown in equation (1) be used to determine the alcohol concentration in beer? Why or why not? Equation 1: 2 K2Cr2O7 + 8 H2SO4 + 3 CH3CH2OH → 2 Cr2(SO4)3 + 2 K2SO4 + 3 CH3COOH + 11 H2O. (1)Plants convert carbon dioxide (CO₂ - 44.01 g/mol) and H₂O into glucose (C6H12O6- 180.2 g/mol) as follows: 6CO2+ 6H₂O ---> 6O2 + C6H120⁰6 How many grams of glucose can be synthensized from 11.40 g of CO₂? Assume excess H₂O. Answer to 2 decimal places. Your Answer: 7.78 Answer g unitsHelp me please
- Calculate ∆H°f, in kcal/mol for C₂H₂(g) from the reaction 2 C2H2(g) + 5 O2(g) > 4 CO2(g) + 2 H2O(g) +600kcal Use the table below as a reference.1-butanol yields 1-bromobutane in the presence of concentrated sulfuric acid and an excess of sodium bromide. CH;CH,CH,CH,OH (1) → CH3 CH,CH,CH,Br (1) If 14.83 mL of 1-butanol produced 12.42 g of 1-bromobutane, the percentage yield of the product equals: (Assume the density of 1-butanol is 0.81 g/mL, the molar mass of 1-butanol is 74 g/mol, and the molar mass of 1-bromobutane is 137 g/mol.)1. Calculate the heat of combustion of propanol ( C3H₂O) and the percent error in the following data; volume of water = 100.0 ml, density of water = 1.00 g/ml Tinitial of water = 29 °C Tf water = 92 °C Mass of alcohol lamp + propanol = 178. 50 g before lighting, Mass of alcohol lamp + propanol = 177.74 g Heat of combustion propanol = -2021 kj/mole after ignition
