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Question 6 The molarity of a solution can be determined from o the number of mmoles...
A 77.0-ml sample of a 0.203 M potassium sulfate solution is mixed with 55.0 mL of...
A 77.0-ml sample of a 0.203 M potassium sulfate solution is mixed with 55.0 mL of a 0.226 M lead(II) nitrate solution and this reaction occurs: K2SO4(aq) + Pb(NO3)2 (aq) + 2 KNO3(aq) + PbSO4(s) The solid PbSO4 is collected, dried, and found to have a mass of 3.71 g. Determine the percent yield. 1 mole PbSO4 = 303.26 g Hydrazine, N2H4, is a liquid used as a rocket fuel. It reacts with oxygen to yield nitrogen gas and water....
no. 3 COL LUPIC. 3. (20 pts) Use the following thermodynamic data (reported at 298 K...
no. 3
COL LUPIC. 3. (20 pts) Use the following thermodynamic data (reported at 298 K and 1 bar) to determine: Substance 4/Hº (kJ/mol) S. (I/K-mol) 4,6° (kJ/mol) N2H4(1) 50.53 121.21 149.4 159.4 N2H4(g) 95.4 Wap 238.9 205.14 191. 610 O2(g) 0 0 N2(g) H2O(1) -237.2 69.91 -285.83 SpA (3a) (5 pts) The molar enthalpy of vaporization of hydrazine N, H. (36) (5 pts) Whether liquid hydrazine vaporizes at 25°C and 1 bar? Hint: Calculate the free energy of vaporization...
please answer question in the boxes for all problems According to the balanced reaction below, calculate the mo...
please answer question in the boxes for all problems
According to the balanced reaction below, calculate the moles of NH3 that form when 4.2 mol of N2He completely reacts 3 N2H4(1) ► 4 NH3(g) + N2(g) STARTING AMOUNT ADD FACTOR ANSWER RESET 16.8 5.6 32.06 4 4.2 28.02 | 3.2 Tap here or pull up for additional resources How many moles of Care formed upon complete reaction of 2 mol of B according to the generic chemical reaction: A +...
1. Hydrazine is used to remove dissolved oxygen from the water in water heating systems. N2H4(l) + O2(g) à 2H2O(l) + N2(g) What is the free energy changed observed when 1.00...
1. Hydrazine is used to remove dissolved oxygen from the water in water heating systems. N2H4(l) + O2(g) à 2H2O(l) + N2(g) What is the free energy changed observed when 1.00 mole of N2H4 is oxidized? (for hydrazine ∆G°f = 149.2 kJ/mol) What is the free energy change for the oxidation of 1.00 pound (454 g) of hydrazine? 2. Calculate the standard free energy change and equilibrium constant for the following reaction at 25 °C. 4Ag(aq) + O2(g) + 4H+(aq)...
Hydrazine (N2H4) is a liquid that burns in oxygen gas to yield nitrogen gas and water...
Hydrazine (N2H4) is a liquid that burns in oxygen gas to yield nitrogen gas and water vapor. Using the data below, determine the ΔG and the equilibrium constant for the combustion reaction. Chemical ΔGfº (kJ/mol): [N2 (g)=0] [N2H4 (l)=149] [N2H4 (g)=159] [H2O (l)=-237] [H2O (g)=-229] [O2(g)=0] I got that ΔG is -607, but why does K=e^245?
Hydrazine, N2H4 has literally been used as rocket fuel. It reacts exothermically with oxygen as shown...
Hydrazine, N2H4 has literally been used as rocket fuel. It reacts exothermically with oxygen as shown below: AH=-577 N2H4 (8) + O2(g) →N2 (g) + 2 H2O(g) kJ/mol What quantity of heat is released when 1.00 kg of hydrazine is combusted? 18.0 kJ 6 5.70 x 105 kg 0 1.80 x 10 kg
balance each of the following equations Fall 209 CHM 105.004 Exam 2 Answer all the question in order in the blue b...
balance each of the following equations
Fall 209 CHM 105.004 Exam 2 Answer all the question in order in the blue book. Plesse leave at least two lines between question and show your calculations for full credit. N-6.023 x 10” particles per mol: R 0.08.205 L-atm/(mol-K) b) Al2(PO4) 3 e) CuSO4-5 H2O 1. Calculate the molar masses of: a) (NH4)2SO4 2. Calculate: a) the number of atoms of calcium in a 10.50 g sample of the metal b) the mass...
72. Determine AHº for this reaction from the data below. N2H4(1) + 2 H2O2(1) -→ N2(g)...
72. Determine AHº for this reaction from the data below. N2H4(1) + 2 H2O2(1) -→ N2(g) + 4H2O(1) N2H4(1) + O2(g) →→ N2(g) + 2 H2O(1) A Hº = -622.2 kJ mol-1 H2(g) + + O2(g) →→ H2O(1) A Hº = -285.8 kJ mol-1 H2(g) + O2(g) —> H2O2(1) A,Hº = -187.8 kJ mol-1
The thermochemical equation for the reaction is shown below: 4 Al(s) + 3 O2(g) → 2...
The thermochemical equation for the reaction is shown below: 4 Al(s) + 3 O2(g) → 2 Al2O3(s) AH = -3352 kJ How much heat is released when 12.1 g of Al react with O2(g) at 25 °C and 1 atm? 0 - 104 kJ 0 -3.59 x 105 kJ -1.50 x 103 kJ O-376 kJ A 77.0-mL sample of a 0.203 M potassium sulfate solution is mixed with 55.0 mL of a 0.226 M lead(II) nitrate solution and this reaction...
Enthalpy changes for the following reactions can be determined experimentally: C2H4(g) + 3 O2(g) → 2...
Enthalpy changes for the following reactions can be determined experimentally: C2H4(g) + 3 O2(g) → 2 CO2(g) + 2 H2O(l) C2H5OH(l) + 3 O2(g) → 2 CO2(g) + 3 H2O(l) ΔHorxn = -1411.1 kJ/mol-rxn ΔHorxn = -1367.5 kJ/mol-rxn Use the given values to determine the enthalpy change for the reaction: C2H4(g) + H2O(l) → C2H5OH(l) ΔHorxn (answer) = kJ/mol-rxn
A 77.0-ml sample of a 0.203 M potassium sulfate solution is mixed with 55.0 mL of a 0.226 M lead(II) nitrate solution and this reaction occurs: K2SO4(aq) + Pb(NO3)2 (aq) + 2 KNO3(aq) + PbSO4(s) The solid PbSO4 is collected, dried, and found to have a mass of 3.71 g. Determine the percent yield. 1 mole PbSO4 = 303.26 g Hydrazine, N2H4, is a liquid used as a rocket fuel. It reacts with oxygen to yield nitrogen gas and water....
no. 3
COL LUPIC. 3. (20 pts) Use the following thermodynamic data (reported at 298 K and 1 bar) to determine: Substance 4/Hº (kJ/mol) S. (I/K-mol) 4,6° (kJ/mol) N2H4(1) 50.53 121.21 149.4 159.4 N2H4(g) 95.4 Wap 238.9 205.14 191. 610 O2(g) 0 0 N2(g) H2O(1) -237.2 69.91 -285.83 SpA (3a) (5 pts) The molar enthalpy of vaporization of hydrazine N, H. (36) (5 pts) Whether liquid hydrazine vaporizes at 25°C and 1 bar? Hint: Calculate the free energy of vaporization...
please answer question in the boxes for all problems
According to the balanced reaction below, calculate the moles of NH3 that form when 4.2 mol of N2He completely reacts 3 N2H4(1) ► 4 NH3(g) + N2(g) STARTING AMOUNT ADD FACTOR ANSWER RESET 16.8 5.6 32.06 4 4.2 28.02 | 3.2 Tap here or pull up for additional resources How many moles of Care formed upon complete reaction of 2 mol of B according to the generic chemical reaction: A +...
Hydrazine, N2H4 has literally been used as rocket fuel. It reacts exothermically with oxygen as shown below: AH=-577 N2H4 (8) + O2(g) →N2 (g) + 2 H2O(g) kJ/mol What quantity of heat is released when 1.00 kg of hydrazine is combusted? 18.0 kJ 6 5.70 x 105 kg 0 1.80 x 10 kg
balance each of the following equations
Fall 209 CHM 105.004 Exam 2 Answer all the question in order in the blue book. Plesse leave at least two lines between question and show your calculations for full credit. N-6.023 x 10” particles per mol: R 0.08.205 L-atm/(mol-K) b) Al2(PO4) 3 e) CuSO4-5 H2O 1. Calculate the molar masses of: a) (NH4)2SO4 2. Calculate: a) the number of atoms of calcium in a 10.50 g sample of the metal b) the mass...
72. Determine AHº for this reaction from the data below. N2H4(1) + 2 H2O2(1) -→ N2(g) + 4H2O(1) N2H4(1) + O2(g) →→ N2(g) + 2 H2O(1) A Hº = -622.2 kJ mol-1 H2(g) + + O2(g) →→ H2O(1) A Hº = -285.8 kJ mol-1 H2(g) + O2(g) —> H2O2(1) A,Hº = -187.8 kJ mol-1
The thermochemical equation for the reaction is shown below: 4 Al(s) + 3 O2(g) → 2 Al2O3(s) AH = -3352 kJ How much heat is released when 12.1 g of Al react with O2(g) at 25 °C and 1 atm? 0 - 104 kJ 0 -3.59 x 105 kJ -1.50 x 103 kJ O-376 kJ A 77.0-mL sample of a 0.203 M potassium sulfate solution is mixed with 55.0 mL of a 0.226 M lead(II) nitrate solution and this reaction...
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