Concept explainers
(a)
Interpretation:
The temperature of the pain reliever in Fahrenheit is to be calculated. And also the temperature of the pain reliever in Kelvin is to be calculated.
Concept introduction:
Kelvin
The formula to convert temperature from degree Celsius to Kelvin is,
The formula to convert temperature from degree Celsius to Fahrenheit is,
(b)
Interpretation:
The temperature of the cake in Celsius is to be calculated. And also the temperature of the pain reliever in Kelvin is to be calculated.
Concept introduction Kelvin
The formula to convert temperature from degree Celsius to Kelvin is,
The formula to convert temperature from degree Celsius to Fahrenheit is,
Want to see the full answer?
Check out a sample textbook solutionChapter 1 Solutions
General, Organic, & Biological Chemistry
- During a recent winter month in Sheboygan, Wisconsin, it was necessary to obtain 3500 kWh of heat provided by a natural gas furnace with 89% efficiency to keep a small house warm (the efficiency of a gas furnace is the percent of the heat produced by combustion that is transferred into the house). (a) Assume that natural gas is pure methane and determine the volume of natural gas in cubic feet that was required to heat the house. The average temperature of the natural gas was 56 F; at this temperature and a pressure of 1 atm, natural gas has a density of 0.68 1 g/L. (b) How many gallons of LPG (liquefied petroleum gas) would be required to replace the natural gas used? Assume the LPG is liquid propane [ C3H8 : density, 0.5318 g/mL; enthalpy of combustion, 2219 Id/mo for the formation of CO2(g) and H2O(l) ] and the furnace used to burn the LPG has the same efficiency as the gas furnace. (c) What mass of carbon dioxide is produced by combustion of the methane used to heat the house? (d) What mass of water is produced by combustion of the methane used to heat the house? (e) What volume of air is required to provide the oxygen for the combustion of the methane used to heat the house? Air contains 23% oxygen by mass. The average density of air during the month was 1.22 g/L. (f) How many kilowatt—hours ( 1kWh=3.6106 J) of electricity would be required to provide the heat necessary to heat the house? Note electricity is 100% efficient in producing heat inside a house. (g) Although electricity is 100% efficient in producing heat inside a house, production and distribution of electricity is not 100% efficient. The efficiency of production and distribution of electricity produced in a coal-fired power plant is about 40%. A certain type of coal provides 2.26 kWh per pound upon combustion. What mass of this coal in kilograms will be required to produce the electrical energy necessary to heat the house if the efficiency of generation and distribution is 40%?arrow_forwardA book is held 6 feet above the floor and then dropped. Which statement is true? a.The potential energy of the book is converted to kinetic energy. b.The potential energy of the book is destroyed. c.Kinetic energy is created. d.The total energy of the system will not be conserved.arrow_forwardSome farmers use ammonia, NHS, as a fertilizer. This ammonia is stored in liquid form. Use the particulate perspective to show the transition from liquid ammonia to gaseous ammonia.arrow_forward
- What are the differentiating factors between potential and kinetic energy? a.Properties-physical or chemical b.State-solid or liquid c.Temperature-high or low d.Activity-in motion or in storagearrow_forwardA 45-g aluminum spoon (specific heat 0.88 J/g C) at 24 C is placed in 180 mL (180 g) of coffee at 85 C and the temperature of the two become equal. (a) What is the final temperature when the two become equal? Assume that coffee has the same specific heat as water. (b) The first time a student solved this problem she got an answer of 88 C. Explain why this is clearly an incorrect answer.arrow_forwardA Different civilization on a distant planet has developed a new temperature scale based on ethyl alcohol. The freezing point of ethyl alcohol (117C) is designated as 0J, and its boiling point (78C) is designated as 100J. Assuming that the relationship between C and J is linear, (a) draw a graph of the line using the data above. (b) what is the slope of the line? (c) what is the y-intercept of the line? (d) Write an equation to convert J to C.arrow_forward
- How many joules of heat are lost by 3580 kg of granite asit cools from 41.2°C to -12.9°C? The specific heat ofgranite is 0.803J/(gC) .arrow_forward1.78 Some farmers use ammonia, NH3, as a fertilizer. This ammonia is stored in liquid form. Use the participate perspective to show the transition from liquid ammonia to gaseous ammonia.arrow_forwardClassify each pure substance represented below by a capital letter as an element or a compound. Indicate when such a classification cannot be made, and explain why. a. Two elements when mixed combine to form only substance L. b. An element and a compound when mixed form substances M and Q. c. Substance X is not changed by heating.arrow_forward
- 9.90 Many engineering designs must incorporate ways to dissipate energy in the form of heat. Water evaporators are common for this task. (a) What property of water makes it a good material for evaporators? {b} If an application could not use water, hut instead was forced to use a material with a value for the property in part (a) that was one half that of water, what changes would need to be made in the design?arrow_forwardIf it takes 654 J of energy to warm a 5.51-g sample of water, how much energy would be required to warm 55.1 g of water by the same amount?arrow_forwardA hot metal block is plunged into water in a well-insulated container. The temperature of the metal block goes down, and the temperature of the water goes up until their temperatures are the same. A total of 1500 J of energy' is lost by the metal object. By how much did the energy of the water increase? What law of science is illustrated by this problem?arrow_forward
- World of ChemistryChemistryISBN:9780618562763Author:Steven S. ZumdahlPublisher:Houghton Mifflin College DivWorld of Chemistry, 3rd editionChemistryISBN:9781133109655Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCostePublisher:Brooks / Cole / Cengage LearningGeneral Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage Learning
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningIntroductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning