Homework Answers
if you have any doubts about
the answer please mention in the comments please do rate the answer
.
Add Answer to:
An automobile engine generates 2124 Joules of heat that must be carried away by the cooling...
QUESTION 3 An automobile engine provides 637 Joules of work to push the pistons. In this...
QUESTION 3 An automobile engine provides 637 Joules of work to push the pistons. In this process the internal energy changes by -2767 Joules. Calculate the amount of heat that must be carried away by the cooling system. O a.-2767J b. 2130 c. 3404 J d. -2130 J O e. -3404 J QUESTION 7 kl of heat are released when 5.5 mol of HBr is formed in this reaction. The value of AH® for the reaction below is -72 k)....
OWL Question for Section 5.1 Mastery Question Status: ? ? ? You must answer 2 of...
OWL Question for Section 5.1 Mastery Question Status: ? ? ? You must answer 2 of 3 questions correctly in the SAME attempt at this Unit to receive cred go to other Units in this Assignment or to redo this Unit. Chemical Formulas Scientific Notation Periodic Table Tables An automobile engine provides 648 Joules of work to push the pistons. In this process the internal energy changes by -2808 Joules. Calculate the amount of heat that must be carried away...
The following thermochemical equation is for the reaction of iron(III) oxide(s) with hydrogen(g) to form iron(s) and wa...
The following thermochemical equation is for the reaction of iron(III) oxide(s) with hydrogen(g) to form iron(s) and water(g). Fe2O3(s) + 3H2(g)— 2Fe(s) + 3H2O(g) AH = 98.8 kJ When 62.3 grams of iron(III) oxide(s) react with excess hydrogen(g), kJ of energy are Hint: An amount of energy is expressed as a positive number. The sign of AH in the thermochemical equation indicates whether the energy is absorbed or evolved. An automobile engine provides 523 Joules of work to push the...
Which expression describes the heat evolved in a chemical reaction when the reaction is carried out...
Which expression describes the heat evolved in a chemical reaction when the reaction is carried out at constant pressure? AE represents internal energy, which can also be symbolized as AU. The symbols w and q represent work and heat, respectively.
15. When gasoline burns in a car engine, the heat released causes the products CO2 and...
15. When gasoline burns in a car engine, the heat released causes the products CO2 and H20 to expand, which pushes the pistons outward. Excess heat is removed by the car's radiator. If the expanding gases do 478.9 J of work on the pistons and the system releases 846.8 J to the surroundings as heat, calculate the change in energy (AE) in J, KJ, and kcal. (4.0 pts) Energy change Your solutions (AE-+ w) (1 cal = 4.184 J, 1...
A chemical reaction is run in which 781 Joules of heat are absorbed and the internal...
A chemical reaction is run in which 781 Joules of heat are absorbed and the internal energy changes by +1360 Joules. Calculate the amount of work done. w- Joules An error has been detected in your answer. Check for typos. miscalculations etc. before submitting your answer. Submit Answer Retry Entire Group No more group attempts remain
2. Isochoric/Adiabatic/Isobaric Cycle (10 pts) A heat engine using a monatomic gas follows the cycle shown in the PV diagram to the right. Between stages 1 and 2 the gas is at a constant volume,...
2. Isochoric/Adiabatic/Isobaric Cycle (10 pts) A heat engine using a monatomic gas follows the cycle shown in the PV diagram to the right. Between stages 1 and 2 the gas is at a constant volume, and between 2 and 3 no heat is transferred in or out, between 3 and 1 the pressure is held constant (a) For each stage of this process, calculate in Joules the heat, Q, transferred to the gas, and the work, W, done by the...
1. In the compression stroke of a gas engine, the work done on the gas by...
1. In the compression stroke of a gas engine, the work done on the gas by the piston is 70 kJ/kg, and the heat rejected to the cooling water is 42 kJ/kg. Calculate lthe change of specific internal energy, stating whether it is a gain or a loss. 2. A closed system undergoes 5 separate processes. These processes are summarised in the following table Q (kJ) E, (kJ) 20 50 Process E, (kJ) AE (k 50 20 -20 80 90...
Learning Goal: To understand what a heat engine is and its theoretical limitations. Ever since Hero...
Learning Goal:
To understand what a heat engine is and its theoretical
limitations.
Ever since Hero demonstrated a crude steam turbine in ancient
Greece, humans have dreamed of converting heat into work. If a fire
can boil a pot and make the lid jump up and down, why can't heat be
made to do useful work?
A heat engine is a device designed to convert heat into work.
The heat engines we will study will be cyclic: The working
substance...
1) Calculate the heat through a glass window that is 30.0 cm*150 cm in area and 1.20 mm&n
1) Calculate the heat through a glass window that is 30.0 cm*150 cm in area and 1.20 mm thick. Assume the temperature onthe inside of the window is 25.0�C while the outside temperature is 8.00�C. 2)Five hundred joules of heat is absorbed by a system that does 200 J of work on its surroundings. What is the change in the internal energy of the system? 3)An ideal gas expands isothermally, performing 8.80 kJ of work in the process. Calculate the heat absorbed during the expansion. 4)A gas contained in a cylinder that has a piston is kept at a constant pressure of 2.80*10^5Pa. The gas expands from0.500 m^3to 1.50 m^3 when 300 kJ...
QUESTION 3 An automobile engine provides 637 Joules of work to push the pistons. In this process the internal energy changes by -2767 Joules. Calculate the amount of heat that must be carried away by the cooling system. O a.-2767J b. 2130 c. 3404 J d. -2130 J O e. -3404 J QUESTION 7 kl of heat are released when 5.5 mol of HBr is formed in this reaction. The value of AH® for the reaction below is -72 k)....
OWL Question for Section 5.1 Mastery Question Status: ? ? ? You must answer 2 of 3 questions correctly in the SAME attempt at this Unit to receive cred go to other Units in this Assignment or to redo this Unit. Chemical Formulas Scientific Notation Periodic Table Tables An automobile engine provides 648 Joules of work to push the pistons. In this process the internal energy changes by -2808 Joules. Calculate the amount of heat that must be carried away...
The following thermochemical equation is for the reaction of iron(III) oxide(s) with hydrogen(g) to form iron(s) and water(g). Fe2O3(s) + 3H2(g)— 2Fe(s) + 3H2O(g) AH = 98.8 kJ When 62.3 grams of iron(III) oxide(s) react with excess hydrogen(g), kJ of energy are Hint: An amount of energy is expressed as a positive number. The sign of AH in the thermochemical equation indicates whether the energy is absorbed or evolved. An automobile engine provides 523 Joules of work to push the...
Which expression describes the heat evolved in a chemical reaction when the reaction is carried out at constant pressure? AE represents internal energy, which can also be symbolized as AU. The symbols w and q represent work and heat, respectively.
15. When gasoline burns in a car engine, the heat released causes the products CO2 and H20 to expand, which pushes the pistons outward. Excess heat is removed by the car's radiator. If the expanding gases do 478.9 J of work on the pistons and the system releases 846.8 J to the surroundings as heat, calculate the change in energy (AE) in J, KJ, and kcal. (4.0 pts) Energy change Your solutions (AE-+ w) (1 cal = 4.184 J, 1...
A chemical reaction is run in which 781 Joules of heat are absorbed and the internal energy changes by +1360 Joules. Calculate the amount of work done. w- Joules An error has been detected in your answer. Check for typos. miscalculations etc. before submitting your answer. Submit Answer Retry Entire Group No more group attempts remain
2. Isochoric/Adiabatic/Isobaric Cycle (10 pts) A heat engine using a monatomic gas follows the cycle shown in the PV diagram to the right. Between stages 1 and 2 the gas is at a constant volume, and between 2 and 3 no heat is transferred in or out, between 3 and 1 the pressure is held constant (a) For each stage of this process, calculate in Joules the heat, Q, transferred to the gas, and the work, W, done by the...
1. In the compression stroke of a gas engine, the work done on the gas by the piston is 70 kJ/kg, and the heat rejected to the cooling water is 42 kJ/kg. Calculate lthe change of specific internal energy, stating whether it is a gain or a loss. 2. A closed system undergoes 5 separate processes. These processes are summarised in the following table Q (kJ) E, (kJ) 20 50 Process E, (kJ) AE (k 50 20 -20 80 90...
Learning Goal:
To understand what a heat engine is and its theoretical
limitations.
Ever since Hero demonstrated a crude steam turbine in ancient
Greece, humans have dreamed of converting heat into work. If a fire
can boil a pot and make the lid jump up and down, why can't heat be
made to do useful work?
A heat engine is a device designed to convert heat into work.
The heat engines we will study will be cyclic: The working
substance...
Most questions answered within 3 hours.
-
What mechanisms Drive speciation??
(I.e. what was Dawins theory on the orgin of species, and how...
asked 3 minutes ago -
The manager at a car assembly plant believes that the mean
assembly time for a car...
asked 55 minutes ago -
Which of the following is true of electron capture?
A) It decreases the nuclide's mass number...
asked 2 hours ago -
Assuming an efficiency of 43.10%, calculate the actual yield of
magnesium nitrate formed from 114.9 g...
asked 3 hours ago -
The highly pathogenic bacterium Clostridium
perfringens causes gangrene, a disease that results in the
destruction of...
asked 4 hours ago -
In the context of situation analysis, which of the following is
a category for analysis in...
asked 4 hours ago -
In a study of the gas phase decomposition of sulfuryl chloride
at 600 K SO2Cl2(g)SO2(g) +...
asked 4 hours ago -
75 g of 2-propanol (C3H8O) and 25 g of pentane are mixed in a
200 mL...
asked 4 hours ago -
The 2800-turn coil in a dc motor has an area per turn of 1.1 ×
10-2...
asked 5 hours ago -
Draw a combinational logic circuit diagram with a symbol inside
the box for two I/P of...
asked 5 hours ago -
The cliché we use quite a lot in finance is: there is a need to
maximize...
asked 5 hours ago -
In class we discussed the addition of HCl to alpha pinene. Would
you expect one or...
asked 5 hours ago