Question 4 2 pts Acetylene gas, C2H2, is used in welding torches. What is the enthalpy of combustion of acetylene? 2 C2H2(g)+ 5 02g) 4 CO2(3) + 2 H2O(g)
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Ead eacn questiuon careruny ana cnoose tne core nswer Question 3 2 pts Determine the amount of he...
1).From the following enthalpy changes, S (s) +3/2 O2 (g) 2 SO2 (g) SO3 (g) O2...
1).From the following enthalpy changes, S (s) +3/2 O2 (g) 2 SO2 (g) SO3 (g) O2 (g)2 SO3 (g) AH =-395.2 kJ AHo 198.2 kJ Calculate the value of AHo for the reaction by using Hess's law of Heat Summation S(s) O2 (g) SO2 (g) 2) Oxyacetylene torches are fueled by the combustion of acetylene, C2H2. 4 CO2 (g) +2 H20 (g) 2 C2H2 + 5 O2 (g) If the enthalpy change for the reaction is -2511.14 kJ/mol, a) How...
2) Oxyacetylene torches are fueled by the combustion of acetylene, C2H2 2 C2H2 + 5 O2...
2) Oxyacetylene torches are fueled by the combustion of acetylene, C2H2 2 C2H2 + 5 O2 (g) 4 CO2 (g) + 2 H2O (g) If the enthalpy change for the reaction is -251 1.14 kJ/mol, a) How much heat can be produced by the reaction of 10 g of C2H2? b) Is it an endotherm ic or exothermic reaction? Molar mass of acetylene is 26.04 g/mol.
Question 1 0.5 pts When solutions of hydrochloric acid and calcium hydroxide are mixed, 34.6 kJ of energy is evolved. I...
Question 1 0.5 pts When solutions of hydrochloric acid and calcium hydroxide are mixed, 34.6 kJ of energy is evolved. Is this reaction exothermic or endothermic? Endothermic OExothermic 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 atm? Fill in the values for the...
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...
Question 2 3 pts The heat of fusion for glycerol (C3H803) is 18.48 kJ/mol. How much...
Question 2 3 pts The heat of fusion for glycerol (C3H803) is 18.48 kJ/mol. How much heat would be absorbed when 227.57 g of glycerol undergo fusion? Express your answer in units of kilojoules (kJ) using at least three significant figures. Question 3 3 pts The Arxn for the combustion of acetone (C3HO) is -895 kJ, as shown below. How many grams of Oz would need to be consumed by this reaction in order to release 571.9 kJ of heat?...
answers to 5 and 6 D Question 5 2 pts Given the following reactions: 2S (s)+3 02 (3)- 2 SO3 (3) AH 790kJ s(s) +02 (g...
answers to 5 and 6
D Question 5 2 pts Given the following reactions: 2S (s)+3 02 (3)- 2 SO3 (3) AH 790kJ s(s) +02 (g)-502 (g) ΔΗΡ-297 kJ What is the enthalpy value (in kJ) of the reaction in which sulfur dioxide is oxidized to sulfur trioxide? 2502 (g) + O2 (g) 2503 (g) ΔΗΡ ? D Question 6 2 pts Given the following reactions: CaCO3 (s) CaO (s) + CO2 (g) HP-178.1 kJ C (s, graphite) + O2...
Problem 3 please I'm not understanding. Please tell how you got the answer step by step...
Problem 3 please I'm not understanding. Please tell how
you got the answer step by step and the equation used !
Thanks
Date 1. Calculate AE for a system undergoing an endothermic process in which 25.3 kJ of heat flows and where 4.6 kJ of work is done on the system. 2. Calculate the work associated with the compression of a gas from 52 L. to 33 L at a constant external pressure of 16 atm. 3. How many grams...
e In Canvas D Question 3 2 pts Complete combustion of 1 mole of acetone (C3H&O)...
e In Canvas D Question 3 2 pts Complete combustion of 1 mole of acetone (C3H&O) liberates 1790 kJ. Which of the following equations (with their correct AH° values) would not need to be used in any form to determine the enthalpy of formation of acetone? O C(graphite) + O2(g) CO2(8) ○ 3CO2(g) + 3H20(I) → 402(g) + C3H6O(1) O C(graphite) + 1/202(8) CO(g) ○ 2H2(g) + O2(g)-→ 2H2O(l) Next 4 Previous
Question 5 2 pts The thermite reaction, which Dr. Jew set off in class (!), is...
Question 5 2 pts The thermite reaction, which Dr. Jew set off in class (!), is the reaction of iron(III) oxide with aluminum according to the balanced reaction: Fe2O3(s) + 2 Al(s) --> Al2O3(s) + 2 Fe(l) dH = -849 kJ What would be the value of dH if... (a) ... the reaction is reversed? (b) ... the coefficients are all doubled? (c) ... the reaction is reversed and all coefficients are halved? value of dH if the reaction is...
Exam 3 An orbital with the quantum numbers n=5/= 2. m = -1 may be found...
Exam 3 An orbital with the quantum numbers n=5/= 2. m = -1 may be found in which subshell? A. 5f C. 5p B. 50 D. 5s The number of orbitals in a p subshell is A. 3 C. 2 B. 1 D. 5 Calculate AU of a gas for a process in which the gas absorbs 29 J of heat and does 31 J of work by expanding A. 2 B. 60 J C. -60) D. -2J Which of...
1).From the following enthalpy changes, S (s) +3/2 O2 (g) 2 SO2 (g) SO3 (g) O2 (g)2 SO3 (g) AH =-395.2 kJ AHo 198.2 kJ Calculate the value of AHo for the reaction by using Hess's law of Heat Summation S(s) O2 (g) SO2 (g) 2) Oxyacetylene torches are fueled by the combustion of acetylene, C2H2. 4 CO2 (g) +2 H20 (g) 2 C2H2 + 5 O2 (g) If the enthalpy change for the reaction is -2511.14 kJ/mol, a) How...
2) Oxyacetylene torches are fueled by the combustion of acetylene, C2H2 2 C2H2 + 5 O2 (g) 4 CO2 (g) + 2 H2O (g) If the enthalpy change for the reaction is -251 1.14 kJ/mol, a) How much heat can be produced by the reaction of 10 g of C2H2? b) Is it an endotherm ic or exothermic reaction? Molar mass of acetylene is 26.04 g/mol.
Question 1 0.5 pts When solutions of hydrochloric acid and calcium hydroxide are mixed, 34.6 kJ of energy is evolved. Is this reaction exothermic or endothermic? Endothermic OExothermic 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 atm? Fill in the values for the...
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...
Question 2 3 pts The heat of fusion for glycerol (C3H803) is 18.48 kJ/mol. How much heat would be absorbed when 227.57 g of glycerol undergo fusion? Express your answer in units of kilojoules (kJ) using at least three significant figures. Question 3 3 pts The Arxn for the combustion of acetone (C3HO) is -895 kJ, as shown below. How many grams of Oz would need to be consumed by this reaction in order to release 571.9 kJ of heat?...
answers to 5 and 6
D Question 5 2 pts Given the following reactions: 2S (s)+3 02 (3)- 2 SO3 (3) AH 790kJ s(s) +02 (g)-502 (g) ΔΗΡ-297 kJ What is the enthalpy value (in kJ) of the reaction in which sulfur dioxide is oxidized to sulfur trioxide? 2502 (g) + O2 (g) 2503 (g) ΔΗΡ ? D Question 6 2 pts Given the following reactions: CaCO3 (s) CaO (s) + CO2 (g) HP-178.1 kJ C (s, graphite) + O2...
Problem 3 please I'm not understanding. Please tell how
you got the answer step by step and the equation used !
Thanks
Date 1. Calculate AE for a system undergoing an endothermic process in which 25.3 kJ of heat flows and where 4.6 kJ of work is done on the system. 2. Calculate the work associated with the compression of a gas from 52 L. to 33 L at a constant external pressure of 16 atm. 3. How many grams...
e In Canvas D Question 3 2 pts Complete combustion of 1 mole of acetone (C3H&O) liberates 1790 kJ. Which of the following equations (with their correct AH° values) would not need to be used in any form to determine the enthalpy of formation of acetone? O C(graphite) + O2(g) CO2(8) ○ 3CO2(g) + 3H20(I) → 402(g) + C3H6O(1) O C(graphite) + 1/202(8) CO(g) ○ 2H2(g) + O2(g)-→ 2H2O(l) Next 4 Previous
Question 5 2 pts The thermite reaction, which Dr. Jew set off in class (!), is the reaction of iron(III) oxide with aluminum according to the balanced reaction: Fe2O3(s) + 2 Al(s) --> Al2O3(s) + 2 Fe(l) dH = -849 kJ What would be the value of dH if... (a) ... the reaction is reversed? (b) ... the coefficients are all doubled? (c) ... the reaction is reversed and all coefficients are halved? value of dH if the reaction is...
Exam 3 An orbital with the quantum numbers n=5/= 2. m = -1 may be found in which subshell? A. 5f C. 5p B. 50 D. 5s The number of orbitals in a p subshell is A. 3 C. 2 B. 1 D. 5 Calculate AU of a gas for a process in which the gas absorbs 29 J of heat and does 31 J of work by expanding A. 2 B. 60 J C. -60) D. -2J Which of...
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