Chemistry In Focus
7th Edition
ISBN: 9781337399692
Author: Tro, Nivaldo J.
Publisher: Cengage Learning,
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 10, Problem 30E
Interpretation Introduction
Interpretation:
The surface area of the PV cells is to be calculated and whether the given array would meet the peak power demands and fit on a rooftop or not is to be explained.
Concept Introduction:
Power input on a PV cell is the total active area of the PV cell multiplied by the solar power.
The percent of the input power that is converted into the output power by a PV cell is called its efficiency.
Percent efficiency of a PV cell is 100 multiplied by the ratio of power out and power in.
The expression is as follows:
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
In 2008 the approximate energy consumption for the entire population of earth for an entire year was 4.74x10^20 joules. The sun's energy striking the earth is orders of magnitude greater than this...taking the whole surface aea of the earth for an entire year, there is approximately 1.33x 10^16 joules/miles striking the earth's surface per year. if a solar panel was 100% efficient, approximately how big would the surface area (with units of a mile) of the solar panel have to be to meet the energy needs of the people living on earth?
The total power used by humans worldwide is approximately 15 TW (terawatts). Sunlight striking Earth provides 1.336 kW
per square meter (assuming no clouds). The surface area of Earth is approximately 197,000,000 square miles.
How much of Earth's surface would we need to cover with solar energy collectors to power the planet for use by all humans?
Assume that the solar energy collectors can only convert 10 % of the available sunlight into useful power.
When an electrical appliance whose power usage is X watts is run for Y seconds, it uses X × Y joules of energy. The energy unit used by electrical utilities in their monthly bills is the kilowatt-hour (kWh, that is, 1 kilowatt used for 1 hour). How many joules are there in a kilowatt-hour? If electricity costs $.09 per kilowatt-hour, how much does it cost per megajoule?
Chapter 10 Solutions
Chemistry In Focus
Ch. 10 - Prob. 10.1YTCh. 10 - Prob. 10.2YTCh. 10 - Prob. 1SCCh. 10 - Prob. 1ECh. 10 - Explain why hydroelectric power and wind power are...Ch. 10 - Prob. 3ECh. 10 - Prob. 4ECh. 10 - Prob. 5ECh. 10 - Prob. 6ECh. 10 - Prob. 7E
Ch. 10 - Prob. 8ECh. 10 - Prob. 9ECh. 10 - Prob. 10ECh. 10 - Prob. 11ECh. 10 - Prob. 12ECh. 10 - Prob. 13ECh. 10 - Prob. 14ECh. 10 - Prob. 15ECh. 10 - How does a geothermal power plant generate...Ch. 10 - Prob. 17ECh. 10 - Prob. 18ECh. 10 - Prob. 19ECh. 10 - Prob. 20ECh. 10 - Prob. 21ECh. 10 - Prob. 22ECh. 10 - Prob. 23ECh. 10 - Prob. 24ECh. 10 - Prob. 25ECh. 10 - Prob. 26ECh. 10 - Prob. 27ECh. 10 - Prob. 28ECh. 10 - Prob. 29ECh. 10 - Prob. 30ECh. 10 - Prob. 31ECh. 10 - Prob. 32ECh. 10 - Prob. 33ECh. 10 - Prob. 34ECh. 10 - Prob. 35ECh. 10 - Prob. 36ECh. 10 - Prob. 37ECh. 10 - Prob. 38ECh. 10 - Prob. 42ECh. 10 - Prob. 43E
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- 3. Which of the following statements is an argument against using renewable energy? O They will run out O They produce pollution O You only need a small amount to produce a lot of energy O The technology needed is expensivearrow_forwardFor similar light intensity, compact fluorescent bulbs use about 25% of the energy of incandescent bulbs. Let's say you replaced a bulb of 100W with a fluorescent bulb and that your utility charges $0.15/kW-hour. How many dollars would you save in electricity in the 10,000-hr. lifetime of the bulb?arrow_forwardWhat are the pros and cons of the utilization of hydrogen gas as a source of energy? What are the obstacles that have prevented its widespread use?arrow_forward
- Which of the fuels would you choose to power an electric plant? Why?arrow_forwardDefine the term renewable energy sources?arrow_forwardIn Table 7.2 (Energy Expenditure of a 180-Pound Person During Selected Exercises)Links to an external site. in the course textbook, it is claimed that a person climbing stairs expends about 1200 kcal/hr. The maximum human power output for short-term effort is approximately 1200 W (remember 1 W = 1 J/s). Is the value of 1200 kcal/hr a reasonable estimate of average power output by a person climbing stairs? Note: Power is defined as energy per time, so 1200 kcal/hr has units of energy per time. A watt is the SI unit of power and has units of J/s. So to approach this problem you will need to convert one power measurement into the other. Group of answer choices It comes out to be 1400 W, which is too high It is impossible to convert kcals into joules since one is an SI unit and the other isn't It comes out to be 1.395 x 103 W, so the value in the table seems reasonable It comes out to be 960 W, that is too high It comes out to be 1.4 W and that is too lowarrow_forward
- Between ethanol and biodiesel, which one is better to use? What are the advantages and disadvantages of using them?arrow_forwardCalculate the solar energy or the heat required to produce 3,600 g of C6H12O6arrow_forwardA sample of 2.40 g of potato chips was burned in a calorimeter. The calorimeter was calibrated to have a heat capacity of 6.94 kcal/ °C. The heat released caused the temperature of the calorimeter to increase 1.85 °C. Calculate the food caloric content of the potato chips in nutritional calories per gram to three significant figures. Recall that 1 nutritional calorie (Cal) = 1 kcal.arrow_forward
- 6CO2(g) + 6H2O(l) → C6H12O6(s) + 6O2(g) ΔH = +2803 kJ/mol Calculate the mass (in grams) of O2 that is produced by photosynthesis when 24300 kJ of solar energy is consumed. Put your answer in scientific notation.arrow_forwardThe sun supplies energy at a rate of about 1.0 kilowatt per square meter of surface area (1 watt = 1 J/s). The plants in an agricultural field produce the equivalent of 23 kg of sucrose (C12H22 O11) per hour per hectare (1 ha = 10,000 m²). Assuming that sucrose is produced by the reaction 12CO₂(g) + 11H₂O(l) → C12H22 O11 (8) + 1202 (9) AH = 5640 kJ calculate the percentage of sunlight used to produce the sucrose - that is, determine the efficiency of photosynthesis in this field. Percent efficiency = %arrow_forwardonsider a cloudless day on which the sun shines down across the United States. If 2751 kJ of energy reaches a square meter m²) of the United States in one hour, how much total solar energy reaches the entire United States per hour? The entire area of the United States is 9,158,960 km². solar energy per hour: kJ/h TOOLS x10 218 PM 9/3/2021 64 F Clear ENGarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Chemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning
Chemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning
Introductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning
Chemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning
Introductory Chemistry: A Foundation
Chemistry
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:Cengage Learning
Chemistry: Principles and Practice
Chemistry
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Cengage Learning
The Laws of Thermodynamics, Entropy, and Gibbs Free Energy; Author: Professor Dave Explains;https://www.youtube.com/watch?v=8N1BxHgsoOw;License: Standard YouTube License, CC-BY