Concept explainers
(a)
Interpretation:
The state of dibromomethane existing at − 75 C0 needs to be calculated.
Concept Introduction:
Heating curve is the representation of the changing in the state of substance from solid to liquid to vapor corresponding to different temperature.
The given substance dibromomethane usually exists at 3 states such as solid, liquid and vapor state. Each state of dibromomethane corresponds to different temperature like at temperature below − 53 C0 it exists at solid state.
At temperature above − 53 C0 it exists at liquid state while at temperature above 97 C0 it exists at vapor state.
While the − 53C0 and 97 C0 corresponds to freezing and boiling temperature of water.
(b)
Interpretation:
The heating curve of dibromomethane at − 53 C0 needs to be calculated.
Concept Introduction:
Heating curve is the representation of the changing in the state of substance from solid to liquid to vapor corresponding to different temperature.
The given substance dibromomethane usually exists at 3 states such as solid, liquid and vapor state. Each state of dibromomethane corresponds to different temperature like at temperature below − 53 C0 it exists at solid state.
At temperature above − 53 C0 it exists at liquid state while at temperature above 97 C0 it exists at vapor state.
While the − 53C0 and 97 C0 corresponds to freezing and boiling temperature of water.
(c)
Interpretation:
The state of dibromomethane existing at − 18 C0 needs to be calculated.
Concept Introduction:
Heating curve is the representation of the changing in the state of substance from solid to liquid to vapor corresponding to different temperature.
The given substance dibromomethane usually exists at 3 states such as solid, liquid and vapor state. Each state of dibromomethane corresponds to different temperature like at temperature below − 53 C0 it exists at solid state.
At temperature above − 53 C0 it exists at liquid state while at temperature above 97 C0 it exists at vapor state.
While the − 53C0 and 97 C0 corresponds to freezing and boiling temperature of water.
(d)
Interpretation:
The state of dibromomethane existing at 110 C0 needs to be calculated.
Concept Introduction:
Heating curve is the representation of the changing in the state of substance from solid to liquid to vapor corresponding to different temperature.
The given substance dibromomethane usually exists at 3 states such as solid, liquid and vapor state. Each state of dibromomethane corresponds to different temperature like at temperature below − 53 C0 it exists at solid state.
At temperature above − 53 C0 it exists at liquid state while at temperature above 97 C0 it exists at vapor state.
While the − 53C0 and 97 C0 corresponds to freezing and boiling temperature of water.
(e)
Interpretation:
The temperature at which dibromomethane existing at solid as well as liquid state needs to be calculated.
Concept Introduction:
Heating curve is the representation of the changing in the state of substance from solid to liquid to vapor corresponding to different temperature.
The given substance dibromomethane usually exists at 3 states such as solid, liquid and vapor state. Each state of dibromomethane corresponds to different temperature like at temperature below − 53 C0 it exists at solid state.
At temperature above − 53 C0 it exists at liquid state while at temperature above 97 C0 it exists at vapor state.
While the − 53C0 and 97 C0 corresponds to freezing and boiling temperature of water.
Want to see the full answer?
Check out a sample textbook solutionChapter 10 Solutions
Basic Chemistry
- (7.6)Classify each of the following change or reaction as endothermic or exothermic. combustion of propane gas [Choose] [Choose endothermic vaporization of rubbing alcohol exothermic condensation of gas to liquid [Choose]arrow_forwardWhen 1.0 g of gasoline burns, it releases 11 kcal. The density of gasoline is 0.74 g/mL. (3.4, 3.6) How many megajoules are released when 1.0 gal of gasoline burns? If a television requires 150 kJ/h to run, how many hours can the television run on the energy provided by 1.0 gal of gasoline?arrow_forward1. (9 points) A 15.0 gram piece of metal is heated to 65.0°C and then dropped into 175 grams of 24.0°C water. The system eventually comes to a stable temperature of 35.5 C. (The specific heat of water is 4.184 J/g °C) a. Energy is absorbed by the water. What is qWATER? b. Energy is released by the metal. What is qMETAL? (this one is easy) c. What is the specific heat (Cs) of the metal?arrow_forward
- (12.7)How much heat is required to heat 28.0 grams of solid ice at -20.0 °C to liquid water at 98.0 °C? Use the appropriate data from below for the calculation. Cs, water = 4.184 J/g.°C Cs, steam = 2.01 J/g.°C Cs, ice = 2.09 J/g.°C Hfusion = 6.02 kJ/mol Hvaporization = 40.7 kJ/mol melting point of H₂O = 0 °C Boiling point of H₂O = 100 °C O 21.2 kJ O 22.0 kJ O 12.7 kJ O 26.1 kJarrow_forwardIn a large building, oil is used in a steam boiler heating system.The combustion of 1.0 lb of oil provides 2.4 * 107 J. Howmany kilograms of oil are needed to heat 150 kg of water from22 °C to 100 °C? (3.4, 3.5)arrow_forward28 A of ice at 0.0 °C is to a of at 8 A 45-g piece of ice at 0.0 °C is added to a sample of water at 8.0 °C. All of the ice melts and the temperature of the water decreases to 0.0 °C. How many grams of water were in the sample? (3.6, 3.7) oil in kcal/g? (3.5, 3.6) 9 In a large building, oil is used in a steam boiler heating system. The combustion of 1.0 lb of oil provides 2.4 × 107 J. (3.4, 3.6) a. How many kilograms of oil are needed to heat 150 kg of water from 22 °C to 100 °C? b. How many kilograms of oil are needed to change 150 kg of water to steam at 100 °C? 00 When 1.0 g of gasoline burns, it releases 11 kcal. The density of gasoline is 0.74 g/mL. (3.4, 3.6) a. How many megajoules are released when 1.0 gal of gaso- line burns? b. If a television requires 150 kJ/h to run, how many hours can the television run on the energy provided by 1.0 gal of gasoline? ISWERS wers to Selected Practice Problems a. element b. compound d. compound c. element e. compound a. pure substancearrow_forward
- does it compare with the known melting and boiling point? (1) 9. The average kinetic energy of water molecules is a measure of the temperature of water. When the temperature of water remains constant the average kinetic energy of the molecules remains constant, even though the water is being heated by the Bunsen flame. So, energy is being taken in by the water, but it is not being used to increase the kinetic energy of the molecules. 9.1 What type of energy are the water molecules gaining during a phase change? (1) 9.2 Explain your reasoning (to question 9.1) with reference to the kinetic theory of matter. 10. Write the conclusion. (3) [30]arrow_forward(8) 9. How much energy is required to heat 81.0 g of water (specific heat = 1.00 cal/g °C) at 11.0°C to steam (specific heat 0.468 cal/g°C) at 123.0°C? (Heat of vaporization of water = 540. cal/g)arrow_forward2. Solving an enthalpy of neutralization problem. (see Chemistry 2e, Example 5.5): a. Calculate q when 47.35 g of water is heated from 22.6 C to 31.1 C. cal 9 = m CAT q= (47.35) (8.5) (4.186)arrow_forward
- A cedarcrest.instructure.com Homework Set #2 Join conversation 16. Calculate the heat capacity of a brick if a 100. g sample absorbs 2439 J of heat, and its temperature changes from 28.0°C to 57.0°C. (3.6)arrow_forward7.72 Classify each of the following as exothermic or endothermic: a. C3Hg(g) + 502(g) b. 2Na(s) + Cl,(g) c. PCI5(g) + 67 kJ → 3CO2(g) + 4H,O(g) + 2220 kJ 2NACI(s) + 819 kJ > PCI,(g) + Cl2(g)arrow_forwardA flask containing 1059 g of water is heated and a temperature increase from 32.4 °C to 67.6 °C. How much heat did one mole of water absorb in (J/mol). (s=4.18, molar mass of water 18 g/mol) a. 0.71 b. 4.30 C. 10.88 d. 2.50 е. 7.29 1.arrow_forward
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY