Sustainable Energy
2nd Edition
ISBN: 9781337551663
Author: DUNLAP, Richard A.
Publisher: Cengage,
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 1, Problem 2P
A simple way of looking at the energy associated with the combustion of methane [as shown in equation (1.15)] is to view the oxidation of the carbon by equation (1.13) and the oxidation of hydrogen by equation (1.19). Based on the energies involved in these processes, discuss the validity of this approach.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Write an expression for the ratio for ideal combustion of any alkane fuel with chemical formula CxH2x+2. You are essentially looking for a simple function f(x) that satisfies the following relation for any value of x (see attach pic). Show that your function f(x) works for the following alkanes:
a. Methane – CH4
b. Ethane – C2H6
c. Propane – C3H8
A gas undergoes a cycle in a piston-cylinder assembly consisting of the following three processes:
Process 1-2: Constant pressure, p = 1.4 bar, V₁ = 0.028 m³, W12 = 10 kJ
Process 2-3: Compression with pV = constant, U3 = U₂
Process 3-1: Constant volume, U₁ - U3 = -25 kJ
There are no significant changes in kinetic or potential energy.
(a) Calculate the net work for the cycle, in kJ.
(b) Calculate the heat transfer for process 1-2, in kJ.
Part A
Your answer is correct.
Calculate the net work for the cycle, in kJ.
Wcycle = -7.63
kJ
Find the theoretical oxygen demand of 150 g of
benzene (C6H6) in moles of 02.
Your Answer:
Chapter 1 Solutions
Sustainable Energy
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
What production method for steel shapes is specified by the following organizations? AISI (American Iron and St...
Structural Steel Design (6th Edition)
5.11 What error results on a 200-ft sight with a level if the rod reading is 6.307 ft but the top of the
7-ft r...
Elementary Surveying: An Introduction To Geomatics (15th Edition)
1.2 Explain the difference between geodetic and plane
surveys,
Elementary Surveying (14th Edition)
A 3 ft square footing carries a sustained load of 10 k. It is placed on the surface of a 30 ft thick saturated ...
Foundation Design: Principles and Practices (3rd Edition)
11-1. Determine the moments at A,B, and C, then draw
the moment diagram for the beam. The moment of ine...
Structural Analysis (10th Edition)
State three examples of a static load application and three examples of a dynamic load application.
Materials for Civil and Construction Engineers (4th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Similar questions
- Write down the chemical formulae for the combustion of the alkanes in Table 3.2 with n = 2 to n = 8. Determine the mass of CO2 produced per megajoule of energy.arrow_forwardIf hydrogen followed an ideal gas law at all pressures, calculate the pressure at which the density of CHG would exceed that of LH2 (71 kg/m3).arrow_forwardThe change in internal energy for the combustion of 1.0 mol of octane at a pressure of 1.0 atm is -5084.3 kJ . If the change in enthalpy is -5074.0 kJ , how much work is done during the combustion? Express the work in kilojoules to three significant figures.arrow_forward
- Question 4 2.5 pts Nitrogen gas can be combined with oxygen to form nitric oxide (NO) as shown in the following chemical reaction: N2 (g) + O2 (g) 2 NO (g) When the reaction is in equilibrium, the concentration of N2, O2 and NO are 280 g/L, 640 g/L, and 750 g/L, respectively. If the concentration of oxygen gas dropped to half, calculate the concentration of nitric oxide (NO) in g/L when the system returns to equilibrium. (N=14, O=16 g/mol) Enter your final answer with 2 decimal places.arrow_forward(a) What is the physical significance of energy of activation ? Explain with diagram.(b) In general, it is observed that the rate of a chemical reaction doubles with every 10 degree rise in temperature. If the generalization holds good for the reaction in the temperature range of 295 K to 305 K, what would be the value of activation energy for this reaction ?[R = 8.314 J mol-1 K-1]arrow_forwardQ3: B: A 208 g of C6H6 (78 g/mol.) burns in air according to the equation: CHs + O2 - CO2 +H2O What mass of CO2 (44 g/mol.) is produced?arrow_forward
- Cellulose is to be burned in a waste to energy facility. The chemical equation for cellulose is C6H10O5. The atomic weights of C, H, and O are 12, 1, and 16, respectively. The ideal equation for the combustion of cellulose is C6H10O5 +6O2à6CO2 + 5H2O. Calculate the stoichiometric oxygen necessary for the combustion of cellulose. Calculate the stoichiometric air supply. The air is 23.15% oxygen by weight. If the facility operates at 1.5 tons/hour at 100% excess air. How much air is required?arrow_forwardThe enthalpy of combustion of benzoic acid (C6 H5 COOH) is commonly used as the standard for calibrating constant-volume bomb calorimeters; its value has been accurately determined to be −3226.7 kJ/mol. When 1.9862 g of benzoic acid are burned in a calorimeter, the temperature rises from 21.84°C to 25.67°C. What is the heat capacity of the bomb? (Assume that the quantity of water surrounding the bomb is exactly 2000 g.)arrow_forwardRead the question carefully and give me right solution according to the questionarrow_forward
- Henry's law constant for transferring 02 from air into water, at room temperature, mmol liter – atm • - is 1.3 Given that the partial pressure of O2 in the atmosphere is 0.21 atm, the concentration of dissolved oxygen (mg/liter) in water in equilibrium with the atmosphere at room temperature is (Consider the molecular weight of O2 as 32 g/mol)arrow_forwardMethanol (CH3OH) can be degraded as shown in the reaction below. Answer the following questions if methanol is present in a water at a concentration of 260 mg/L and the water flowrate is 1.7 million gallons per day (mgd). 2. CH3OH + 1.5 O2 → CO2 + 2 HLO What amount of carbon dioxide (CO2) will be produced each day (in lbs and kg)? How much oxygen (O2) will need to be supplied to degrade the methanol (in mg/L and lbs/day) if the oxygen transfer process is 48% efficient? а. b.arrow_forwardThe combustion of pure hydrogen by the reaction 2H2+O22H2O produces 142 MJ per kg of hydrogen. Compare the energy per kg of octane and the total energy from the individual combustion of its carbon and hydrogen atoms.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
The Science Inside Concrete Binders; Author: Dow;https://www.youtube.com/watch?v=GZq3Cyn2mVE;License: Standard Youtube License