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25) Objects can possess energy as (a) endothermic energy (b) potential energy (c) kinetic energy A) a only B) b...
26. The internal energy can be increased by a) transferring heat from the surroundings to the...
26. The internal energy can be increased by a) transferring heat from the surroundings to the ystem (b) transferring heat from the system to the surroundings c) doing work on the system A) a only B)b only C) c only D) a and c E) b and e 27. For the species in the reaction below, AHf is zero for 2Co (s) + H2 (3)+ 8PF3 () 2HCo(PF3)4) A) Co (s) B) H2 (3) C) PF3 (8) 1D) HCo(PF3)40 E)...
1. The dimensions of the SI unit of energy, the Joule (J), are A. K B....
1. The dimensions of the SI unit of energy, the Joule (J), are A. K B. kg m s C. kg m2 s-2 D. kg m-1 s-2 E. kg m2 s-1 2. Natural gas, or methane, is an important fuel. Combustion of one mole of methane releases 802.3 kilojoules of energy. How much energy does that represent in kilocalories? A. 3.36×103 kcal B. 3.357 kcal C. 191.8 kcal D. 0.192 kcal E. 1.918×105 kcal 3. What is the change in...
1. Calculate the change in the internal energy of the following systems and then determine whether...
1. Calculate the change in the internal energy of the following systems and then determine whether the processes are endothermic or exothermic: (a) 45 kJ of heat is transferred from the system to the surroundings. Answer: AE- the process is (b) 605 J of work is performed by the surroundings to the system. Answer: AE (c) When 145 J of work is done by the surroundings to the system, 212 J of heat is transferred from the system to the...
1. Which statement is incorrect?a.The Law of Conservation of Energy is another statement of...
1. Which statement is incorrect?a.The Law of Conservation of Energy is another statement of the
First Law of Thermodynamics.b.Energy is the capacity to do work or to transfer heat.c.Potential energy is the energy that a system possesses by virtue
of its position or composition.d.Kinetic energy is the energy of motion.e.A process that absorbs energy from its surroundings is called
exothermic.____ 2. Which term is not
correctly matched?a.thermodynamic state - conditions specifying the properties of a
systemb.state function - property dependent...
pleasee show me how to get the correct answers in preperation for my upcoming exam 2.)...
pleasee show me how to get the correct answers in preperation
for my upcoming exam
2.) D 3.) B 4.) D
2) A 5.00-g sample of copper metal at 25.0°C is heated by the addition of 133 J of energy. The final temperature of the copper is °C. The specific heat capacity of copper is 0.38 J/g-K. A) 45.0 B) 25.0 C) 70.0 D) 95.0 E) 35.1 250 3) The value of AE for a system that performs 151 kJ...
1) The kinetic energy of a 23.2-g object moving at a speed of 81.9 km/hr is....
1) The kinetic energy of a 23.2-g object moving at a speed of 81.9 km/hr is. A) 1900 B) 77.8 C) 145 D) 1.43 x 10-3 E) 6.00 2) The specific heat capacity of lead is 0.13 J/g-K. How much heat (in ) is required to raise the temperature of 15 g of lead from 22 °C to 37 °C? A) 2.0 J B) -0.13 J C) 5.8 x 10-4J D) 29 J E) 0.13 J 3) Given the following...
Someone please help solving this asap thanks! 1. Calculate AE and determine whether the process is...
Someone please help solving this asap thanks!
1. Calculate AE and determine whether the process is exothermic or endothermic for the following cases: L. When a chemical reaction produces 90.7 kJ of heat but does no work on its surroundings. il. When combustion of a gas releases 2100U of heat to its surroundings. ii. When 33.05 kd of heat is transferred to the system and 22.0 kJ of work on the surroundings. Iv. When 121 kJ of work is performed...
Please explain! Calculate Delta E, and determine whether the process is endothermic or exothermic for the...
Please explain!
Calculate Delta E, and determine whether the process is endothermic or exothermic for the following cases: A system absorbs 85 kJ of heat from its surroundings while doing 29 kJ of work on the surroundings; q = 1.50 kJ and w = -657 J; the system releases 57.5 kJ of heat while doing 13.5 kJ of work on the surroundings.
42) Which statement is FALSE? A) An exothermic reaction gives heat off heat to the surroundings. B) Enthalpy is the...
42) Which statement is FALSE? A) An exothermic reaction gives heat off heat to the surroundings. B) Enthalpy is the sum of a system's internal energy and the product of pressure and volume change. C) AErxn is a measure of heat. D) AHrxn is the heat of reaction. E) Endothermic has a positive AH. 43) How much energy is required to decompose 765 g of PC13, according to the reaction below? The molar mass of PCl3 is 137.32 g/mol and...
answers only mumber of the manganese increase by two units a b decrease by two units...
answers only
mumber of the manganese increase by two units a b decrease by two units there is no change in oxidation mumber e. d. increase by one unit decrease by one nit e. A freshly baked pie is placed near an open widow to cool. Which of the following statements best describes this 6 situation? The pie is the suroundings and loses heat to the system. a b. The pie is the system and loses heat to the surroundings...
26. The internal energy can be increased by a) transferring heat from the surroundings to the ystem (b) transferring heat from the system to the surroundings c) doing work on the system A) a only B)b only C) c only D) a and c E) b and e 27. For the species in the reaction below, AHf is zero for 2Co (s) + H2 (3)+ 8PF3 () 2HCo(PF3)4) A) Co (s) B) H2 (3) C) PF3 (8) 1D) HCo(PF3)40 E)...
1. Calculate the change in the internal energy of the following systems and then determine whether the processes are endothermic or exothermic: (a) 45 kJ of heat is transferred from the system to the surroundings. Answer: AE- the process is (b) 605 J of work is performed by the surroundings to the system. Answer: AE (c) When 145 J of work is done by the surroundings to the system, 212 J of heat is transferred from the system to the...
1. Which statement is incorrect?a.The Law of Conservation of Energy is another statement of the
First Law of Thermodynamics.b.Energy is the capacity to do work or to transfer heat.c.Potential energy is the energy that a system possesses by virtue
of its position or composition.d.Kinetic energy is the energy of motion.e.A process that absorbs energy from its surroundings is called
exothermic.____ 2. Which term is not
correctly matched?a.thermodynamic state - conditions specifying the properties of a
systemb.state function - property dependent...
pleasee show me how to get the correct answers in preperation
for my upcoming exam
2.) D 3.) B 4.) D
2) A 5.00-g sample of copper metal at 25.0°C is heated by the addition of 133 J of energy. The final temperature of the copper is °C. The specific heat capacity of copper is 0.38 J/g-K. A) 45.0 B) 25.0 C) 70.0 D) 95.0 E) 35.1 250 3) The value of AE for a system that performs 151 kJ...
1) The kinetic energy of a 23.2-g object moving at a speed of 81.9 km/hr is. A) 1900 B) 77.8 C) 145 D) 1.43 x 10-3 E) 6.00 2) The specific heat capacity of lead is 0.13 J/g-K. How much heat (in ) is required to raise the temperature of 15 g of lead from 22 °C to 37 °C? A) 2.0 J B) -0.13 J C) 5.8 x 10-4J D) 29 J E) 0.13 J 3) Given the following...
Someone please help solving this asap thanks!
1. Calculate AE and determine whether the process is exothermic or endothermic for the following cases: L. When a chemical reaction produces 90.7 kJ of heat but does no work on its surroundings. il. When combustion of a gas releases 2100U of heat to its surroundings. ii. When 33.05 kd of heat is transferred to the system and 22.0 kJ of work on the surroundings. Iv. When 121 kJ of work is performed...
Please explain!
Calculate Delta E, and determine whether the process is endothermic or exothermic for the following cases: A system absorbs 85 kJ of heat from its surroundings while doing 29 kJ of work on the surroundings; q = 1.50 kJ and w = -657 J; the system releases 57.5 kJ of heat while doing 13.5 kJ of work on the surroundings.
42) Which statement is FALSE? A) An exothermic reaction gives heat off heat to the surroundings. B) Enthalpy is the sum of a system's internal energy and the product of pressure and volume change. C) AErxn is a measure of heat. D) AHrxn is the heat of reaction. E) Endothermic has a positive AH. 43) How much energy is required to decompose 765 g of PC13, according to the reaction below? The molar mass of PCl3 is 137.32 g/mol and...
answers only
mumber of the manganese increase by two units a b decrease by two units there is no change in oxidation mumber e. d. increase by one unit decrease by one nit e. A freshly baked pie is placed near an open widow to cool. Which of the following statements best describes this 6 situation? The pie is the suroundings and loses heat to the system. a b. The pie is the system and loses heat to the surroundings...
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