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Question 5 2 pts The thermite reaction, which Dr. Jew set off in class (!), is...
Exit Question 2 1 pts 4 Consider the balanced reaction 3 A +6 B C +5...
Exit Question 2 1 pts 4 Consider the balanced reaction 3 A +6 B C +5 D and the enthalpies of formation provided in the table below. ΔΗ, Compound (kJ/mol) 314.5 - 166.5 -81.3 Suppose that the AH of the overall reaction is 250.2 kJ/molrxn. Calculate the value of the AH of B in kJ/mol. Report your answer to three decimal places (ignore significant figures). 9:32 Exit Question 3 1 pts 6 Consider the balanced reaction 8 A+ 5 B...
Question 1 1 pts Suppose you are investigating the reaction: M(s) + 2 HCl(aq) → MCl2(aq)...
Question 1 1 pts Suppose you are investigating the reaction: M(s) + 2 HCl(aq) → MCl2(aq) + H2(g). You weigh out a 0.241 gram piece of metal and combine it with 60.4 mL of 1.00 M HCl in a coffee- cup calorimeter. If the molar mass of the metal is 57 g/mol, and you measure that the reaction absorbed 131 J of heat, what is the enthalpy of this reaction in kJ per mole of limiting reactant? Enter your answer...
5. Question 2 1 pts Suppose you are investigating the reaction: M(s) + 2 HCl(aq) →...
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Question 2 1 pts Suppose you are investigating the reaction: M(s) + 2 HCl(aq) → MCl2(aq) + H2(g). You weigh out a 0.202 gram piece of metal and combine it with 62.2 mL of 1.00 M HCl in a coffee-cup calorimeter. If the molar mass of the metal is 48.51 g/mol, and you measure that the reaction absorbed 111 J of heat, what is the enthalpy of this reaction in kJ per mole of limiting reactant? Enter your answer...
Question 4 1 pts Which of the following mole ratios CANNOT be derived from the reaction 2 502 (g) + O2 (g) + 2 H2...
Question 4 1 pts Which of the following mole ratios CANNOT be derived from the reaction 2 502 (g) + O2 (g) + 2 H20 (1) --> 2 H2SO4 (aq) ? 02 mol SO2 2 mol H2SO4 2 mol H2SO4 2 mol O2 0 1 mol O2 2 mol H20 O 2 mol O2 1 mol O2 2 mol H20 2 mol SO2 Question 1 1 pts What do the coefficients in a balanced equation tell us? Mark ALL that...
3. (8 Pts) At 127°C, Kc = 2.6 x 10- for the reaction: 2 NH3(g) +...
3. (8 Pts) At 127°C, Kc = 2.6 x 10- for the reaction: 2 NH3(g) + N2(g) + 3 H2(g) Calculate Kp at this temperature. 4. (10 Pts) A 1.00-L flask was filled with 2.00 mol gaseous SO2 and 2.00 mol gascous NO, and heated. After equilibrium was reached, it was found that 1.30 mol gaseous NO was present. Assume that the reaction: SO2(g) + NO2(g) =SO3(g) + NO(g) occurs under these conditions. Calculate the value of the equilibrium constant,...
Thank you Question 5: (1 point) At 390 K, the equilibrium constant, K., for the reaction...
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Question 5: (1 point) At 390 K, the equilibrium constant, K., for the reaction below is 1.8 x 10-?. PCIs (g) - PC1; (g) + Cl2 (g) Assume a quantity of PCIs (g) is placed in a rigid 10 L vessel and the system is allowed to reach equilibrium at a constant temperature of 390 K. Identify whether each of the following statements is true or false. At equilibrium, if the vessel contains I mole of PCs (g)...
12:47 1 Exit Question 1 0.5 pts When 34.8 g of sodium chloride is dissolved in...
12:47 1 Exit Question 1 0.5 pts When 34.8 g of sodium chloride is dissolved in water, 2.31 kJ of energy is absorbed. Is the enthalpy of dissolution of NaCl exothermic or endothermic? Endothermic Exothermic Question 2 0.5 pts What is the balanced thermochemical equation for the combustion of two moles of gaseous acetylene, C2H2, with oxygen to produce carbon dioxide and water vapor at 24.59°C given that 2512 kJ of heat is released at a constant pressure of 1.14...
1. 2. Question 10 1 pts The graphs show potential energy diagrams for the same reaction...
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Question 10 1 pts The graphs show potential energy diagrams for the same reaction at T-900. K R P 1) uncatalysed process; 2) catalysed reaction Uncatalyzed Reaction 400 300 reactants 200 100 products Reaction coordinate Uncatalysed reaction: Potential Energy (P.E.) vs reaction coordinate. Energy is measured from O to 400. kJ, and the reaction coordinate is associated with the evolution of the reaction. The PE of the reactants is 225 kJ. Then the energy grows to 400. kJ,...
help with All 8 questions please Question 13 2 pts How many moles of carbon are...
help with All 8 questions please
Question 13 2 pts How many moles of carbon are there in 19.3 g of sucrose, CH120.? Use 180.16 g/mol as the mw of ose. Give your answer three decimal places. su Question 14 3 pts A sample of C6H12 has 34.5 g of carbon. How many moles of CH 12 are there? Use 12.01 g/mol as the mw of carbon and 84.16 g/mol as the mw of C6H12. Give your answer to three...
D Question 14 2 pts Consider the gaseous (All reactants and products are gases) equilibrium reaction...
D Question 14 2 pts Consider the gaseous (All reactants and products are gases) equilibrium reaction for the formation of SOa from SO2 and O2. (Hint: You need to write the balanced chemical equation). When 3.00 moles of SO2 and 3.00 moles of O2 are placed in a 1 L flask and allowed to reach equilibrium at a certain temperature, which one of the following is the correct the equilibrium amount of O2? Given that the equilibrium amount of SOs...
Exit Question 2 1 pts 4 Consider the balanced reaction 3 A +6 B C +5 D and the enthalpies of formation provided in the table below. ΔΗ, Compound (kJ/mol) 314.5 - 166.5 -81.3 Suppose that the AH of the overall reaction is 250.2 kJ/molrxn. Calculate the value of the AH of B in kJ/mol. Report your answer to three decimal places (ignore significant figures). 9:32 Exit Question 3 1 pts 6 Consider the balanced reaction 8 A+ 5 B...
Question 1 1 pts Suppose you are investigating the reaction: M(s) + 2 HCl(aq) → MCl2(aq) + H2(g). You weigh out a 0.241 gram piece of metal and combine it with 60.4 mL of 1.00 M HCl in a coffee- cup calorimeter. If the molar mass of the metal is 57 g/mol, and you measure that the reaction absorbed 131 J of heat, what is the enthalpy of this reaction in kJ per mole of limiting reactant? Enter your answer...
5.
Question 2 1 pts Suppose you are investigating the reaction: M(s) + 2 HCl(aq) → MCl2(aq) + H2(g). You weigh out a 0.202 gram piece of metal and combine it with 62.2 mL of 1.00 M HCl in a coffee-cup calorimeter. If the molar mass of the metal is 48.51 g/mol, and you measure that the reaction absorbed 111 J of heat, what is the enthalpy of this reaction in kJ per mole of limiting reactant? Enter your answer...
Question 4 1 pts Which of the following mole ratios CANNOT be derived from the reaction 2 502 (g) + O2 (g) + 2 H20 (1) --> 2 H2SO4 (aq) ? 02 mol SO2 2 mol H2SO4 2 mol H2SO4 2 mol O2 0 1 mol O2 2 mol H20 O 2 mol O2 1 mol O2 2 mol H20 2 mol SO2 Question 1 1 pts What do the coefficients in a balanced equation tell us? Mark ALL that...
3. (8 Pts) At 127°C, Kc = 2.6 x 10- for the reaction: 2 NH3(g) + N2(g) + 3 H2(g) Calculate Kp at this temperature. 4. (10 Pts) A 1.00-L flask was filled with 2.00 mol gaseous SO2 and 2.00 mol gascous NO, and heated. After equilibrium was reached, it was found that 1.30 mol gaseous NO was present. Assume that the reaction: SO2(g) + NO2(g) =SO3(g) + NO(g) occurs under these conditions. Calculate the value of the equilibrium constant,...
Thank you
Question 5: (1 point) At 390 K, the equilibrium constant, K., for the reaction below is 1.8 x 10-?. PCIs (g) - PC1; (g) + Cl2 (g) Assume a quantity of PCIs (g) is placed in a rigid 10 L vessel and the system is allowed to reach equilibrium at a constant temperature of 390 K. Identify whether each of the following statements is true or false. At equilibrium, if the vessel contains I mole of PCs (g)...
12:47 1 Exit Question 1 0.5 pts When 34.8 g of sodium chloride is dissolved in water, 2.31 kJ of energy is absorbed. Is the enthalpy of dissolution of NaCl exothermic or endothermic? Endothermic Exothermic Question 2 0.5 pts What is the balanced thermochemical equation for the combustion of two moles of gaseous acetylene, C2H2, with oxygen to produce carbon dioxide and water vapor at 24.59°C given that 2512 kJ of heat is released at a constant pressure of 1.14...
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Question 10 1 pts The graphs show potential energy diagrams for the same reaction at T-900. K R P 1) uncatalysed process; 2) catalysed reaction Uncatalyzed Reaction 400 300 reactants 200 100 products Reaction coordinate Uncatalysed reaction: Potential Energy (P.E.) vs reaction coordinate. Energy is measured from O to 400. kJ, and the reaction coordinate is associated with the evolution of the reaction. The PE of the reactants is 225 kJ. Then the energy grows to 400. kJ,...
help with All 8 questions please
Question 13 2 pts How many moles of carbon are there in 19.3 g of sucrose, CH120.? Use 180.16 g/mol as the mw of ose. Give your answer three decimal places. su Question 14 3 pts A sample of C6H12 has 34.5 g of carbon. How many moles of CH 12 are there? Use 12.01 g/mol as the mw of carbon and 84.16 g/mol as the mw of C6H12. Give your answer to three...
D Question 14 2 pts Consider the gaseous (All reactants and products are gases) equilibrium reaction for the formation of SOa from SO2 and O2. (Hint: You need to write the balanced chemical equation). When 3.00 moles of SO2 and 3.00 moles of O2 are placed in a 1 L flask and allowed to reach equilibrium at a certain temperature, which one of the following is the correct the equilibrium amount of O2? Given that the equilibrium amount of SOs...
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