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10 Question (1 @ See page 2 Brazilians are quite familiar ethanol, a fermentation product from...
Brazilains are quite familiar with fueling their automobiles with ethanol, a fermentation product from sugarcane. Calculate...
Brazilains are quite familiar with fueling their automobiles with ethanol, a fermentation product from sugarcane. Calculate the standard molar enthalpy for the complete combustion of liquid ethanol (C2H5OH) using the standard enthalpies of formation of the reactants and the products. C2H5OH (l) + 3O2 (g) --> 2CO2 (g) + 3H2O (g)
10 Question (2 points) Balance the following chemical equation, and calculate the standard enthalpy change from...
10 Question (2 points) Balance the following chemical equation, and calculate the standard enthalpy change from standard enthalpies of formation Fe(s) +0,(8) ► Fe,0,(s) 1st attempt I See Periodic Ta Balance the following chemical equation using only whole number coefficients: X X He FeO (s) + O2(g) → Fe2O3(s) 1st attempt Balance the following chemical equation using only whole number coefficients: x | x. He | o. FeO(s) + O2(g) → Fe2O3(s) Calculate the standard enthalpy change from standard enthalpies...
Time Taken:0:33:09 Brandon Bates: Attempt 1 MULUI PUT Ethanol undergoes combustion in oxygen to produce carbon...
Time Taken:0:33:09 Brandon Bates: Attempt 1 MULUI PUT Ethanol undergoes combustion in oxygen to produce carbon dioxide gas and liquid water. Standard enthalpy formation of [CO2(e)] = -393.5 kJ/mol and [H20(1)] = -285.8 kJ/mol, C,H,OH(1) = -277.6 kJ/mol, what is the standard enthalpy of combustion of ethanol? kJ C,H, OH(1) + 3 02(g) + 2 CO2(g) + 3 H2O(l); A Hex = AH, /mol AH° (ræn) = In A Hfº (products) - In AHF ° (reac tants) +2349 kJ/mol +1366.8...
6 Question (1point) See page 228 Adding nitric acid to water is quite exothermic. Calculate the...
6 Question (1point) See page 228 Adding nitric acid to water is quite exothermic. Calculate the temperature change (AT) when 100.0 mL of water (d=1.00 g/mL) at 20.0°C [c-75.3 J/(mol-°C)] and 10.0 mL of concentrated HNO(16.0 M,AHin-33.3 kJ/mol) are combined. 1st attempt See Periodic Table See Hint Assume the concentrated HNO3 has a density equal to that of water and its addition doesn't add a significant amount of water to the system. °C
11 Question (3 points) See page 243 Rocket Fuels The payload of a rocket Includes fuel...
11 Question (3 points) See page 243 Rocket Fuels The payload of a rocket Includes fuel and oxygen for combustion of the fuel, Reactions 1 and 2 describe the combustion of dimethylhydrazine and hydrogen, respectively. 1st attempt Part 1 (1 point) See Periodic Table See Hint Calculate the energy change for the below reaction in k per pound. (CH3)2NNH, (1) + 4H2O(g) - N,(s) + 4H2O(g) +200,() AH --1694k) КЛЬ We were unable to transcribe this image
12 Question (2 points) @ See page 897 Draw the curved arrow mechanism for the formation...
12 Question (2 points) @ See page 897 Draw the curved arrow mechanism for the formation of the major enamine product from the given iminium ion and amine. Draw all electrons and charges if necessary on the product; do not show any side products. V 1st attempt See Periodic Table D See Hint CH
03 Question (1 point) See page 497 What is the molality of a solution prepared by...
03 Question (1 point) See page 497 What is the molality of a solution prepared by dissolving 78.4 g of ethylene glycol, HOCH,CH,OH, in 1.50 L of water? Assume the density of water is 1.00 g/mL. 1st attempt See Periodic Table See Hint
29 Question (2 points) Yeast converts glucose (C6H1206) into ethanol (d 0.789 g/mL) ina process called...
29 Question (2 points) Yeast converts glucose (C6H1206) into ethanol (d 0.789 g/mL) ina process called fermentation. An unbalanced equation for the reaction can be written as follows: CGH120(aq)C,H,OH(!) +CO2 (g) 1st attempt See Periodic Table (1 point) Feedback Part 1 Balance this fermentation reaction by adding the missing coefficients. X X Не N S (1 point) Feedback Part 1 Balance this fermentation reaction by adding the missing coefficients. х х Не CH120(a) 2 СНон() + 2 со,(8) Part 2...
See page 118 12 Question (2 points) A compound containing only C, H. and O, was...
See page 118 12 Question (2 points) A compound containing only C, H. and O, was extracted from the bark of the sassafras tree. The combustion of 34.5 mg produced 93.7 mg of CO2 and 19.2 mg of H2O. The molar mass of the compound was 162 g/mol. Determine its empirical and molecular formulas. 1st attempt
10 Question (1 point) See page 330 Complete and balance the following neutralization reaction, name the...
10 Question (1 point) See page 330 Complete and balance the following neutralization reaction, name the products, and write the net lonic equation. 1st attempt Part 1 (0.3 pt) See Periodic Table Complete and balance the reaction xX He (ag) Al(OH), (s)+ HCL(ag) Part 2 (0.3 pt) Water is one of the products formed. Write the name (not the chemical formula) for the other product. Part 3 (0.3 pt) Write the netionic equation. He
10 Question (2 points) Balance the following chemical equation, and calculate the standard enthalpy change from standard enthalpies of formation Fe(s) +0,(8) ► Fe,0,(s) 1st attempt I See Periodic Ta Balance the following chemical equation using only whole number coefficients: X X He FeO (s) + O2(g) → Fe2O3(s) 1st attempt Balance the following chemical equation using only whole number coefficients: x | x. He | o. FeO(s) + O2(g) → Fe2O3(s) Calculate the standard enthalpy change from standard enthalpies...
Time Taken:0:33:09 Brandon Bates: Attempt 1 MULUI PUT Ethanol undergoes combustion in oxygen to produce carbon dioxide gas and liquid water. Standard enthalpy formation of [CO2(e)] = -393.5 kJ/mol and [H20(1)] = -285.8 kJ/mol, C,H,OH(1) = -277.6 kJ/mol, what is the standard enthalpy of combustion of ethanol? kJ C,H, OH(1) + 3 02(g) + 2 CO2(g) + 3 H2O(l); A Hex = AH, /mol AH° (ræn) = In A Hfº (products) - In AHF ° (reac tants) +2349 kJ/mol +1366.8...
6 Question (1point) See page 228 Adding nitric acid to water is quite exothermic. Calculate the temperature change (AT) when 100.0 mL of water (d=1.00 g/mL) at 20.0°C [c-75.3 J/(mol-°C)] and 10.0 mL of concentrated HNO(16.0 M,AHin-33.3 kJ/mol) are combined. 1st attempt See Periodic Table See Hint Assume the concentrated HNO3 has a density equal to that of water and its addition doesn't add a significant amount of water to the system. °C
11 Question (3 points) See page 243 Rocket Fuels The payload of a rocket Includes fuel and oxygen for combustion of the fuel, Reactions 1 and 2 describe the combustion of dimethylhydrazine and hydrogen, respectively. 1st attempt Part 1 (1 point) See Periodic Table See Hint Calculate the energy change for the below reaction in k per pound. (CH3)2NNH, (1) + 4H2O(g) - N,(s) + 4H2O(g) +200,() AH --1694k) КЛЬ We were unable to transcribe this image
12 Question (2 points) @ See page 897 Draw the curved arrow mechanism for the formation of the major enamine product from the given iminium ion and amine. Draw all electrons and charges if necessary on the product; do not show any side products. V 1st attempt See Periodic Table D See Hint CH
03 Question (1 point) See page 497 What is the molality of a solution prepared by dissolving 78.4 g of ethylene glycol, HOCH,CH,OH, in 1.50 L of water? Assume the density of water is 1.00 g/mL. 1st attempt See Periodic Table See Hint
29 Question (2 points) Yeast converts glucose (C6H1206) into ethanol (d 0.789 g/mL) ina process called fermentation. An unbalanced equation for the reaction can be written as follows: CGH120(aq)C,H,OH(!) +CO2 (g) 1st attempt See Periodic Table (1 point) Feedback Part 1 Balance this fermentation reaction by adding the missing coefficients. X X Не N S (1 point) Feedback Part 1 Balance this fermentation reaction by adding the missing coefficients. х х Не CH120(a) 2 СНон() + 2 со,(8) Part 2...
See page 118 12 Question (2 points) A compound containing only C, H. and O, was extracted from the bark of the sassafras tree. The combustion of 34.5 mg produced 93.7 mg of CO2 and 19.2 mg of H2O. The molar mass of the compound was 162 g/mol. Determine its empirical and molecular formulas. 1st attempt
10 Question (1 point) See page 330 Complete and balance the following neutralization reaction, name the products, and write the net lonic equation. 1st attempt Part 1 (0.3 pt) See Periodic Table Complete and balance the reaction xX He (ag) Al(OH), (s)+ HCL(ag) Part 2 (0.3 pt) Water is one of the products formed. Write the name (not the chemical formula) for the other product. Part 3 (0.3 pt) Write the netionic equation. He
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