Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN: 9781938168390
Author: Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher: OpenStax
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Textbook Question
Chapter 5, Problem 4E
Calculate the heat capacity, in joules and in calories per degree, of the following:
(a) 28.4 g of water
(b) 1.00 oz of lead
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Chapter 5 Solutions
Chemistry by OpenStax (2015-05-04)
Ch. 5 - A burning match and a bonfire may have the same...Ch. 5 - Prepare a table identifying several energy...Ch. 5 - Explain the difference between heat capacity and...Ch. 5 - Calculate the heat capacity, in joules and in...Ch. 5 - Calculate the heat capacity, in joules and in...Ch. 5 - How much heat, in joules and in calories, must be...Ch. 5 - How much heat, in joules and in calories, is...Ch. 5 - How much would the temperature of 275 g of water...Ch. 5 - If 14.5 kJ of heat were added to 485 g of liquid...Ch. 5 - A piece of unknown substance weighs 44.7 g and...
Ch. 5 - A piece of unknown solid substance weighs 437.2 g,...Ch. 5 - An aluminum kettle weighs 1.05 kg. (a) What is the...Ch. 5 - Most people find waterbeds uncomfortable unless...Ch. 5 - A 500-mL bottle of water at room temperature and a...Ch. 5 - Would the amount of heat measured for the reaction...Ch. 5 - Would the amount of heat absorbed by the...Ch. 5 - Would the amount of heat absorbed by the...Ch. 5 - How many milliliters of water at 23 C with a...Ch. 5 - How much will the temperature of a cup (180 g) of...Ch. 5 - A 45-g aluminum spoon (specific heat 0.88 J/g C)...Ch. 5 - The temperature of the cooling water as it leaves...Ch. 5 - A 70.0-g piece of metal at 80.0 °C is placed in...Ch. 5 - If a reaction produces 1.506 kJ of heat, which is...Ch. 5 - A 0.500-g sample of KCl is added to 50.0 g of...Ch. 5 - Dissolving 3.0 g of CaCl2(s) in 150.0 g of water...Ch. 5 - When 50.0 g of 0.200 M NaCl(aq) at 24.1 C is added...Ch. 5 - The addition of 3.15 g of Ba(OH)28H2O to a...Ch. 5 - The reaction of 50 mL of acid and 50 mL of base...Ch. 5 - If the 3.21 g of NH4NO3 in Example 5.6 were...Ch. 5 - When 1.0 g of fructose, C6H12O6(s), a sugar...Ch. 5 - When a 0.740-g sample of trinitrotoluene (TNT),...Ch. 5 - One method of generating electricity is by burning...Ch. 5 - The amount of fat recommended for someone with a...Ch. 5 - A teaspoon of the carbohydrate sucrose (common...Ch. 5 - What is the maximum mass of carbohydrate in a 6-oz...Ch. 5 - A pint of premium ice cream can contain 1100...Ch. 5 - A serving of a breakfast cereal contains 3 g of...Ch. 5 - Which is the least expensive source of energy in...Ch. 5 - Explain how the heat measured in Example 5.5...Ch. 5 - Using the data in the check your learning section...Ch. 5 - Calculate the enthalpy of solution ( H for the...Ch. 5 - Calculate H for the reaction described by the...Ch. 5 - Calculate the enthalpy of solution ( H for the...Ch. 5 - Although the gas used in an oxyacetylene torch...Ch. 5 - How much heat is produced by burning 4.00 moles of...Ch. 5 - How much heat is produced by combustion of 125 g...Ch. 5 - How many moles of isooctane must be burned to...Ch. 5 - What mass of carbon monoxide must be burned to...Ch. 5 - When 2.50 g of methane burns in oxygen, 125 kJ of...Ch. 5 - How much heat is produced when loo mL of 0.250 M...Ch. 5 - A sample of 0.562 g of carbon is burned in oxygen...Ch. 5 - Before the introduction of chlorofluorocarbons,...Ch. 5 - Homes may be heated by pumping hot water through...Ch. 5 - Which of the enthalpies of combustion in Table 5.2...Ch. 5 - Does the standard enthalpy of formation of H2O(g)...Ch. 5 - Joseph Priestly prepared oxygen in 1774 by heating...Ch. 5 - How many kilojoules of heat will be released when...Ch. 5 - How many kilojoules of heat will be released when...Ch. 5 - The following sequence of reactions occurs in the...Ch. 5 - Both graphite and diamond burn....Ch. 5 - From the molar heats of formation in Appendix G,...Ch. 5 - Which produces more heat?...Ch. 5 - Calculate H298 for the process...Ch. 5 - Calculate H298 for the process...Ch. 5 - Calculate H for the process Hg2Cl2(s)2Hg(l)+Cl2(g)...Ch. 5 - Calculate H298 for the process...Ch. 5 - Calculate the standard molar enthalpy of formation...Ch. 5 - Using the data in Appendix G, calculate the...Ch. 5 - Using the data in Appendix G, calculate the...Ch. 5 - The following reactions can be used to prepare...Ch. 5 - The decomposition of hydrogen peroxide, H2O2, has...Ch. 5 - Calculate the enthalpy of combustion of propane,...Ch. 5 - Calculate the enthalpy of combustion of butane,...Ch. 5 - Both propane and butane are used as gaseous fuels....Ch. 5 - The white pigment TiO2 is prepared by the reaction...Ch. 5 - Water gas, a mixture of H2 and CO, is an important...Ch. 5 - In the early days of automobiles, illumination at...Ch. 5 - From the data in Table 5.2, determine which of the...Ch. 5 - The enthalpy of combustion of hard coal averages...Ch. 5 - Ethanol, C2H5OH, is used as a fuel for motor...Ch. 5 - Among the substances that react with oxygen and...Ch. 5 - How much heat is produced when 1.25 g of chromium...Ch. 5 - Ethylene, C2H2, a byproduct from the fractional...Ch. 5 - The oxidation of the sugar glucose, C6H12O6, is...Ch. 5 - Propane, C3H8, is a hydrocarbon that is commonly...Ch. 5 - During a recent winter month in Sheboygan,...
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- When one mole of ethylene gas, C2H4, reacts with fluorine gas, hydrogen fluoride and carbon tetrafluoride gases are formed and 2496.7 kJ of heat are given off. What is Hf for CF4(g)?arrow_forwardChlorine dioxide, ClO2, is a reddish yellow gas used in bleaching paper pulp. The average speed of a ClO2 molecule at 25C is 306 m/s. What is the kinetic energy (in joules) of a ClO2 molecule moving at this speed?arrow_forwardHow much heat is released when a mixture containing 10.0 g NH3 and 20.0 g O2 reacts by the following equation? 4NH3(g)+5O2(g)4NO(g)+6H2O(g);H=906kJarrow_forward
- How much heat is released when a mixture containing 10.0 g CS2 and 10.0 g Cl2 reacts by the following equation? CS2(g)+3Cl2(g)S2Cl2(g)+CCl4(g);H=230kJarrow_forwardA _________ is a device used to determine the heat associated with a chemical reaction.arrow_forwardA rebreathing gas mask contains potassium superoxide, KO2, which reacts with moisture in the breath to give oxygen. 4KO2(s)+2H2O(l)4KOH(s)+3O2(g) Estimate the grams of potassium superoxide required to supply a persons oxygen needs for one hour. Assume a person requires 1.00 102 kcal of energy for this time period. Further assume that this energy can be equated to the heat of combustion of a quantity of glucose, C6H12O6, to CO2(g) and H2O(l). From the amount of glucose required to give 1.00 102 kcal of heat, calculate the amount of oxygen consumed and hence the amount of KO2 required. The ff0 for glucose(s) is 1273 kJ/mol.arrow_forward
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- How much heat, in joules and in calories, must be added to a 75.0g iron block with a specific heat of 0.449 Jig C to increase its temperature from 25 C to its melting temperature of 1535 C?arrow_forwardNatural gas companies in the United States use the therm as a unit of energy. One therm is 1105 BTU. (a) How many joules are in one therm? (1J=9.48104BTU) (b) When propane gas, C3H8, is burned in oxygen, CO2 and steam are produced. How many therms of energy are given off by 1.00 mol of propane gas?arrow_forward9.89 A sample of gas is 80.0% CH4 and 20.0% C2H6 by mass. What is the heat from the combustion of 1.00 g of this mixture? Assume the products are CO2 (g) and H2O (l).arrow_forward
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