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Question 4 (2 points) What is the value of AH in kJ for the overall reaction:...
What is the value of ΔH in kJ for the overall reaction: 4 NO + 6...
What is the value of ΔH in kJ for the overall reaction: 4 NO + 6 H2O → 4 NH3 + 5 O2 given these reaction steps? I. N2 + O2 → 2 NO ΔH = (1.99x10^2) kJ II. 2 NH3 → N2 + 3 H2 ΔH = (8.910x10^1) kJ III. 2 H2O → 2 H2 + O2 ΔH = (4.8000x10^2) kJ Please show work
Question 1 (2 points) Based on the thermochemical equation 2 C4H10 + 13 O2 8 CO2...
Question 1 (2 points) Based on the thermochemical equation 2 C4H10 + 13 O2 8 CO2 + 10 H20 AH = -5316 kJ, if (7.47x10^1) g of C4H10 (MM = 58.14 g/mol) reacted with excess oxygen, how many kJ of heat would be released? NOTE: The word "released" means that NO NEGATIVE SIGN IS NEEDED in your answer. Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any...
Question 3 (2 points) Based on the thermochemical equation 2 C4H10 + 13 02 → 8...
Question 3 (2 points) Based on the thermochemical equation 2 C4H10 + 13 02 → 8 CO2 + 10 H20 AH - -5316 kJ, how many grams of C4H10 (MM = 58.14 g/mol) would have to react in order to release (7.44x10^4) kJ of heat? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to the highest...
1. Calculate AH for the reaction C2H4 (8) + H2() → C2H6), from the following data....
1. Calculate AH for the reaction C2H4 (8) + H2() → C2H6), from the following data. C2H4 (g) + 3 02 (®) → 2 CO2 (s) + 2 H20 (1) C2H6 (g) + 7/2 02(g) → 2 CO2(g) + 3 H20 (1) H2 + 1/2O2() → H20 (1) AH = -1411. kJ/mole AH = -1560. kJ/mole AH = -285.8 kJ/mole 2. Calculate AH for the reaction 4 NH3(g) +502 (g) → 4 NO(g) + 6 H20 (g), from the following...
Calculate AH for the reaction N2H4(0) + O2(g) → N2(g) + 2 H2O(1) given the following...
Calculate AH for the reaction N2H4(0) + O2(g) → N2(g) + 2 H2O(1) given the following data: Equation AH (kJ) 2 NH3(g) + 3 N2O(g) → 4 N2(g) + 3 H2O(l) -1010 N2O(g) + 3 H2(g) → N2H4(1) +H2O(1) -317 2 NH3(g) + 1202(g) → N2H4(1) + H20(1) -143 H2(g) + 1202(g) → H2O(H -286 AH=
An aqueous solution has a mole fraction of solute of (3.660x10^-2). The density of the solution...
An aqueous solution has a mole fraction of solute of (3.660x10^-2). The density of the solution is (1.20x10^0) g/mL and the solute has a molar mass of (8.3800x10^1) g/mol. What is the Molarity of solute of this solution? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer
The formation of nitrous acid occurs as shown below: 202(g) + N2 (g) + H2(g) 2...
The formation of nitrous acid occurs as shown below: 202(g) + N2 (g) + H2(g) 2 HNO2 (aq) Apply Hess's law and calculate the AH (in kJ) for the above reaction. Useful thermochemical data are given below. Just type the final numerical answer with proper sign and sig figs. NH4NO2 (aq) -N2(g) + 2 H20 (1) NH3(aq) + HNO2 (aq) - NH4NO2 (aq) 2NH3(aq) + N2(g) + 3 H2(g) H2(g) + 1/2O2(g) + H20 (1) AH = - 320.1 kJ...
How many grams of Mg(NO3)2 (MM = 148.33 g/mol) would it take to lower the freezing...
How many grams of Mg(NO3)2 (MM = 148.33 g/mol) would it take to lower the freezing point of (4.95x10^2) grams of water by 4.00°C? The freezing point depression constant of water is Kp = 1.86°C/m. Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: X10 Answer
help help help pls! 17. The value of AH° for the reaction below is -790 kJ/mol....
help help help pls!
17. The value of AH° for the reaction below is -790 kJ/mol. What is the enthalpy change accompanying when 0.95 g of S is completely reacted? 2S (s)302 (g) -2SO3 (g) 18. What is the enthalpy of the following reaction: 4 HCI(g) + O2(g) Given the following thermochemical equations: H2(g)+Cla(g)-2 HCI(g) 2 H2(s)O2(g)- 2 H20(g) 2 Cl2 +2 H2O (g)? AH -185 kJ AH-483.7 kJ
When (8.61x10^1) g of a non-electrolyte is dissolved in (5.3100x10^2) g of a solvent (with Kb...
When (8.61x10^1) g of a non-electrolyte is dissolved in (5.3100x10^2) g of a solvent (with Kb = 0.416°C/m) the boiling point of the solution is 1.50°C higher than the boiling point of the pure solvent. What is the molar mass (in g/mol) of the non- electrolyte solute? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to...
Question 1 (2 points) Based on the thermochemical equation 2 C4H10 + 13 O2 8 CO2 + 10 H20 AH = -5316 kJ, if (7.47x10^1) g of C4H10 (MM = 58.14 g/mol) reacted with excess oxygen, how many kJ of heat would be released? NOTE: The word "released" means that NO NEGATIVE SIGN IS NEEDED in your answer. Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any...
Question 3 (2 points) Based on the thermochemical equation 2 C4H10 + 13 02 → 8 CO2 + 10 H20 AH - -5316 kJ, how many grams of C4H10 (MM = 58.14 g/mol) would have to react in order to release (7.44x10^4) kJ of heat? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to the highest...
1. Calculate AH for the reaction C2H4 (8) + H2() → C2H6), from the following data. C2H4 (g) + 3 02 (®) → 2 CO2 (s) + 2 H20 (1) C2H6 (g) + 7/2 02(g) → 2 CO2(g) + 3 H20 (1) H2 + 1/2O2() → H20 (1) AH = -1411. kJ/mole AH = -1560. kJ/mole AH = -285.8 kJ/mole 2. Calculate AH for the reaction 4 NH3(g) +502 (g) → 4 NO(g) + 6 H20 (g), from the following...
Calculate AH for the reaction N2H4(0) + O2(g) → N2(g) + 2 H2O(1) given the following data: Equation AH (kJ) 2 NH3(g) + 3 N2O(g) → 4 N2(g) + 3 H2O(l) -1010 N2O(g) + 3 H2(g) → N2H4(1) +H2O(1) -317 2 NH3(g) + 1202(g) → N2H4(1) + H20(1) -143 H2(g) + 1202(g) → H2O(H -286 AH=
An aqueous solution has a mole fraction of solute of (3.660x10^-2). The density of the solution is (1.20x10^0) g/mL and the solute has a molar mass of (8.3800x10^1) g/mol. What is the Molarity of solute of this solution? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: x10 Answer
The formation of nitrous acid occurs as shown below: 202(g) + N2 (g) + H2(g) 2 HNO2 (aq) Apply Hess's law and calculate the AH (in kJ) for the above reaction. Useful thermochemical data are given below. Just type the final numerical answer with proper sign and sig figs. NH4NO2 (aq) -N2(g) + 2 H20 (1) NH3(aq) + HNO2 (aq) - NH4NO2 (aq) 2NH3(aq) + N2(g) + 3 H2(g) H2(g) + 1/2O2(g) + H20 (1) AH = - 320.1 kJ...
How many grams of Mg(NO3)2 (MM = 148.33 g/mol) would it take to lower the freezing point of (4.95x10^2) grams of water by 4.00°C? The freezing point depression constant of water is Kp = 1.86°C/m. Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: X10 Answer
help help help pls!
17. The value of AH° for the reaction below is -790 kJ/mol. What is the enthalpy change accompanying when 0.95 g of S is completely reacted? 2S (s)302 (g) -2SO3 (g) 18. What is the enthalpy of the following reaction: 4 HCI(g) + O2(g) Given the following thermochemical equations: H2(g)+Cla(g)-2 HCI(g) 2 H2(s)O2(g)- 2 H20(g) 2 Cl2 +2 H2O (g)? AH -185 kJ AH-483.7 kJ
When (8.61x10^1) g of a non-electrolyte is dissolved in (5.3100x10^2) g of a solvent (with Kb = 0.416°C/m) the boiling point of the solution is 1.50°C higher than the boiling point of the pure solvent. What is the molar mass (in g/mol) of the non- electrolyte solute? Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to...
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