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1oodle sou 6.103 Calculate Ethanol (C,H5OH) and gasoline (assumed to be all octane, C3H18) are both used as automobile fuel. If gasoline is selling for $4.50/gal, what would the price of ethanol have to be in order to provide the same amount of heat per dollar? The density and AH of octane are 0.7025 g/mL and -249.9 kJ/mol and of ethanol are 0.7894 g/mL and –277.0 kJ/mol, respectively. 1 gal = 3.785 L. The combustion of what volume of ethane (CH6), measured at 23.0°C and 752 mmHg, would be re- quired to heat 855 g of water from 25.0°C to 98.0°C? mentation 6.104 Portable 6.93 ple engag mate. Th mixture other co The exo %3D very con 6.94 When t molecu 6.95 If energy is conserved, how can there be an energy to begi warm 0 crisis? The heat of vaporization of a liquid (AHvap) is the en- ergy required to vaporize 1.00 g of the liquid at its boil- much 6.96 (Hint: 6.105 A pers ing point. In one experiment, 60.0 g of liquid nitrogen (boiling point –196°C) are poured into a Styrofoam of 40 a ol cup containing 2.00 × 10ʻ g of water at 55.3°C. Calculate the molar heat of vaporization of liquid ni- stored woul if the final temperature of the water is 41.0°C. origi trogen Explain the cooling effect experienced when etha- 1 mo 6.97 6.106 The nol is rubbed on your skin, given that to be C,H;OH(1) → C,H;OH(g) AH° = 42.2 kJ/mol prod

1oodle sou 6.103 Calculate Ethanol (C,H5OH) and gasoline (assumed to be all octane, C3H18) are both used as automobile fuel. If gasoline is selling for $4.50/gal, what would the price of ethanol have to be in order to provide the same amount of heat per dollar? The density and AH of octane are 0.7025 g/mL and -249.9 kJ/mol and of ethanol are 0.7894 g/mL and –277.0 kJ/mol, respectively. 1 gal = 3.785 L. The combustion of what volume of ethane (CH6), measured at 23.0°C and 752 mmHg, would be re- quired to heat 855 g of water from 25.0°C to 98.0°C? mentation 6.104 Portable 6.93 ple engag mate. Th mixture other co The exo %3D very con 6.94 When t molecu 6.95 If energy is conserved, how can there be an energy to begi warm 0 crisis? The heat of vaporization of a liquid (AHvap) is the en- ergy required to vaporize 1.00 g of the liquid at its boil- much 6.96 (Hint: 6.105 A pers ing point. In one experiment, 60.0 g of liquid nitrogen (boiling point –196°C) are poured into a Styrofoam of 40 a ol cup containing 2.00 × 10ʻ g of water at 55.3°C. Calculate the molar heat of vaporization of liquid ni- stored woul if the final temperature of the water is 41.0°C. origi trogen Explain the cooling effect experienced when etha- 1 mo 6.97 6.106 The nol is rubbed on your skin, given that to be C,H;OH(1) → C,H;OH(g) AH° = 42.2 kJ/mol prod

Chemistry for Engineering Students
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter9: Energy And Chemistry
Section: Chapter Questions
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1oodle sou 6.103 Calculate Ethanol (C,H5OH) and gasoline (assumed to be all octane, C3H18) are both used as automobile fuel. If gasoline is selling for $4.50/gal, what would the price of ethanol have to be in order to provide the same amount of heat per dollar? The density and AH of octane are 0.7025 g/mL and -249.9 kJ/mol and of ethanol are 0.7894 g/mL and –277.0 kJ/mol, respectively. 1 gal = 3.785 L. The combustion of what volume of ethane (CH6), measured at 23.0°C and 752 mmHg, would be re- quired to heat 855 g of water from 25.0°C to 98.0°C? mentation 6.104 Portable 6.93 ple engag mate. Th mixture other co The exo %3D very con 6.94 When t molecu 6.95 If energy is conserved, how can there be an energy to begi warm 0 crisis? The heat of vaporization of a liquid (AHvap) is the en- ergy required to vaporize 1.00 g of the liquid at its boil- much 6.96 (Hint: 6.105 A pers ing point. In one experiment, 60.0 g of liquid nitrogen (boiling point –196°C) are poured into a Styrofoam of 40 a ol cup containing 2.00 × 10ʻ g of water at 55.3°C. Calculate the molar heat of vaporization of liquid ni- stored woul if the final temperature of the water is 41.0°C. origi trogen Explain the cooling effect experienced when etha- 1 mo 6.97 6.106 The nol is rubbed on your skin, given that to be C,H;OH(1) → C,H;OH(g) AH° = 42.2 kJ/mol prod
Transcribed Image Text:1oodle sou 6.103 Calculate Ethanol (C,H5OH) and gasoline (assumed to be all octane, C3H18) are both used as automobile fuel. If gasoline is selling for $4.50/gal, what would the price of ethanol have to be in order to provide the same amount of heat per dollar? The density and AH of octane are 0.7025 g/mL and -249.9 kJ/mol and of ethanol are 0.7894 g/mL and –277.0 kJ/mol, respectively. 1 gal = 3.785 L. The combustion of what volume of ethane (CH6), measured at 23.0°C and 752 mmHg, would be re- quired to heat 855 g of water from 25.0°C to 98.0°C? mentation 6.104 Portable 6.93 ple engag mate. Th mixture other co The exo %3D very con 6.94 When t molecu 6.95 If energy is conserved, how can there be an energy to begi warm 0 crisis? The heat of vaporization of a liquid (AHvap) is the en- ergy required to vaporize 1.00 g of the liquid at its boil- much 6.96 (Hint: 6.105 A pers ing point. In one experiment, 60.0 g of liquid nitrogen (boiling point –196°C) are poured into a Styrofoam of 40 a ol cup containing 2.00 × 10ʻ g of water at 55.3°C. Calculate the molar heat of vaporization of liquid ni- stored woul if the final temperature of the water is 41.0°C. origi trogen Explain the cooling effect experienced when etha- 1 mo 6.97 6.106 The nol is rubbed on your skin, given that to be C,H;OH(1) → C,H;OH(g) AH° = 42.2 kJ/mol prod
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