General Chemistry: Principles and Modern Applications, Loose Leaf Version (11th Edition)
11th Edition
ISBN: 9780133897319
Author: Ralph H. Petrucci, F. Geoffrey Herring, Jeffry D. Madura, Carey Bissonnette
Publisher: PEARSON
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Textbook Question
Chapter 7, Problem 8E
Brass has a density of 8.40 g/cm2 and a specific heat capacity of
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General Chemistry: Principles and Modern Applications, Loose Leaf Version (11th Edition)
Ch. 7 - Calculate the quantity of heat, in kilojoules, (a)...Ch. 7 - Calculate the final temperature that results when...Ch. 7 - Refer to Example 7-2. The experiment is repeated...Ch. 7 - A 75.0 g piece of Ag metal is heated to 80.0C and...Ch. 7 - A 465 g chunk of iron is removed from an oven and...Ch. 7 - A piece of stainless steel (C2=0.50Jg-1C-1) is...Ch. 7 - A 1.00 kg sample of magnesium at 40.0C is added to...Ch. 7 - Brass has a density of 8.40 g/cm2 and a specific...Ch. 7 - A 74.8 g sample of copper at 143.2C is added to an...Ch. 7 - A 69.0 g sample of gold at 127.1C is added to an...
Ch. 7 - In the form of heat, 6052 J of energy is...Ch. 7 - What is the final temperature (in C) of 1.24 g of...Ch. 7 - How much heat, in kilojoules, is associated with...Ch. 7 - The standard enthalpy of reaction for the...Ch. 7 - How much heat, in kilojoules, is evolved the...Ch. 7 - Upon complete combustion the indicated substances...Ch. 7 - The combustion of methane gas, the principal...Ch. 7 - Refer to the Integrative Example. What volume of...Ch. 7 - The combustion of hydrogen-oxygen mixtures is used...Ch. 7 - Thermite mixtures are used for certain types of...Ch. 7 - A 0.205 g pellet of potassium hydroxide, KOH, is...Ch. 7 - The heat of solution of Kl(s) in water is...Ch. 7 - You are planning lecture demonstration to...Ch. 7 - Care must be taken in preparing solutions of...Ch. 7 - Refer to Example 7-4. The product of the...Ch. 7 - Prob. 26ECh. 7 - Prob. 27ECh. 7 - Prob. 28ECh. 7 - What mass of ice can be meted the same quantity of...Ch. 7 - What will be the final temperature of the water in...Ch. 7 - A 125 g stainless steel ball bearings...Ch. 7 - Prob. 32ECh. 7 - The enthalpy of sublimation (solid gas) for dry...Ch. 7 - The enthalpy of vaporization forN2 (I)is 5.56...Ch. 7 - A sample gives off 5228 cal when burned in a bomb...Ch. 7 - The following substances undergo complete...Ch. 7 - A bomb calorimetry experiment is performed...Ch. 7 - A coffee-cup calorimeter contains 100.0 mL of...Ch. 7 - A 0.75 g sample of KCI is added to 350 g H2O in a...Ch. 7 - The heat of solution of potassium acetate in water...Ch. 7 - Prob. 41ECh. 7 - Salicylic acid, C7H5O2 , has been suggested as a...Ch. 7 - Refer to Example 7-3. Based on the heat of...Ch. 7 - A 1.397 g sample of thymol, C10H14O(s) (a...Ch. 7 - A g of NaCI is added to a Styrofoam cup of water,...Ch. 7 - can determine purity of solid materials by using...Ch. 7 - Calculate the quantity of work associated with a...Ch. 7 - Calculate the quantity of work, in joules,...Ch. 7 - A 1.00 g sample of Ne(g) at 1 atm pressure and 27C...Ch. 7 - Compressed air in aerosol cans is used to free...Ch. 7 - In each of the following processes, is any work...Ch. 7 - In each of the following processes, any work done...Ch. 7 - If 325 J of work is done by a system at a pressure...Ch. 7 - A movable piston a cylinder holding 5.0 L N2(g) is...Ch. 7 - What is the change in internal energy of a system...Ch. 7 - Whet the change in internal energy of e system if...Ch. 7 - The internal energy of a fixed quantity of an...Ch. 7 - Prob. 58ECh. 7 - Prob. 59ECh. 7 - Prob. 60ECh. 7 - There are other forms of work besides PV work. For...Ch. 7 - Another form of work is extension, defined as the...Ch. 7 - Only one of the following quantities is equal to...Ch. 7 - Determine whether H is equal to, greater than, or...Ch. 7 - The heat of combustion of propan-2-ol at 298.15 K,...Ch. 7 - Prob. 66ECh. 7 - The standard enthalpy of formation of NH2(g) is...Ch. 7 - Use Hess's law to determine rH for the reaction...Ch. 7 - Use Hess's law to determine rH for the reaction 2...Ch. 7 - Given the following information:...Ch. 7 - For the reaction C2H4(g)+CIz(g)C2H4CI2(I) ,...Ch. 7 - Determine rH for this reaction from the data...Ch. 7 - Substitute natural gas (SNG) is a gaseous mature...Ch. 7 - CCI4 , an important commercial solvent, is...Ch. 7 - Use Hess's law and the following data...Ch. 7 - The standard heats of combustion (rH) of butane-l...Ch. 7 - One glucose molecule, C6H12O6(s) is converted to...Ch. 7 - The standard of fermentation of glucose to ethanol...Ch. 7 - Use standard enthalpies of formation from Table...Ch. 7 - Use standard enthalpies of formation from Tables...Ch. 7 - Use the information given here. date from Appendix...Ch. 7 - Prob. 82ECh. 7 - Prob. 83ECh. 7 - Use data from Appendix D to calculate rH for the...Ch. 7 - Prob. 85ECh. 7 - Use data from Table 7.2, together with the...Ch. 7 - Use data from Table 7.2 and rH for re following...Ch. 7 - Use data from Table 7.2 and rH for the following...Ch. 7 - Prob. 89ECh. 7 - Prob. 90ECh. 7 - The decomposition of limestone, CaCO2(s) into...Ch. 7 - Use data from Table 7.2 to calculate the volume of...Ch. 7 - Ants release formic acid (HCOOH) when they bite....Ch. 7 - Prob. 94ECh. 7 - A British thermal unit (Btu) is defined as the...Ch. 7 - What volume of 18.5C water must be added, together...Ch. 7 - A 7.26 kg shot (as used the sporting event, the...Ch. 7 - An alternative approach to bomb calorimetry is to...Ch. 7 - Prob. 99IAECh. 7 - Prob. 100IAECh. 7 - Determine the missing values of rH in the diagram...Ch. 7 - A particular natural gas consists, in mole...Ch. 7 - Prob. 103IAECh. 7 - Prob. 104IAECh. 7 - A calorimeter that measures an exothermic heat of...Ch. 7 - For the reaction C2H4(g)+3O2(g)2CO2(g)+2H2O(I)...Ch. 7 - Some of the butane, C4H10(g) , in a 200.0 L...Ch. 7 - The metabolism of glucose, C5H12O5 yields CO2(g)...Ch. 7 - Prob. 109IAECh. 7 - Upon complete combustion, a 1.00 L sample (at STP)...Ch. 7 - Prob. 111IAECh. 7 - Refer to the discussion of the gasification of...Ch. 7 - A 1.103 g sample of a gaseous...Ch. 7 - Several factors are involved in determining the...Ch. 7 - Prob. 115IAECh. 7 - Prob. 116IAECh. 7 - Prob. 117IAECh. 7 - In the Are You Wondering 7-1 box, the temperature...Ch. 7 - Prob. 119IAECh. 7 - Prob. 120IAECh. 7 - Cetane, C15H34, is a typical petrodiesel with a...Ch. 7 - Carbon dioxide emissions have been implicated as a...Ch. 7 - Prob. 123FPCh. 7 - Prob. 124FPCh. 7 - We can use the heat liberated by a neutralization...Ch. 7 - In a student experiment to confirm Hess's law, the...Ch. 7 - Prob. 127FPCh. 7 - Refer to Example 7-5 dealing with the work done by...Ch. 7 - Look up the specific heat capacity of several...Ch. 7 - In your own words, define or explain the following...Ch. 7 - Prob. 131SAECh. 7 - Explain the important distinctions between each...Ch. 7 - The temperature increase of 225 mL of water at 25C...Ch. 7 - A plausible final temperature when 75.0 ml of...Ch. 7 - U= 100 J for a system that gives off 100 J of heat...Ch. 7 - Prob. 136SAECh. 7 - The standard molar enthalpy of formation of CO2(g)...Ch. 7 - Write the formation reaction for each of the...Ch. 7 - Compute rH for the following reactions. The value...Ch. 7 - When dissolved in water, 1.00 mol LiCI produces...Ch. 7 - Prob. 141SAECh. 7 - Prob. 142SAECh. 7 - Prob. 143SAECh. 7 - A 1.22 kg piece of iron at 126.5C is dropped into...Ch. 7 - Prob. 145SAECh. 7 - The standard molar heats of combustion of...Ch. 7 - Prob. 147SAECh. 7 - Prob. 148SAECh. 7 - Prob. 149SAECh. 7 - Prob. 150SAECh. 7 - Prob. 151SAECh. 7 - Prob. 152SAECh. 7 - Prob. 153SAECh. 7 - Prob. 154SAE
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- A piece of titanium metal with a mass of 20.8 g is heated in boiling water to 99.5 C and then dropped into a coffee-cup calorimeter containing 75.0 g of water at 21.7 C. When thermal equilibrium is reached, the final temperature is 24.3 C. Calculate the specific heat capacity of titanium.arrow_forwardConsider the reaction 2HCl(aq)+Ba(OH)2(aq)BaCl2(aq)+2H2O(l)H=118KJ Calculate the heat when 100.0 rnL of 0.500 M HCl is mixed with 300.0 mL of 0.100 M Ba(OH)2 Assuming that the temperature of both solutions was initially 25.0C and that the final mixture has a mass of 400.0 g and a specific heat capacity of 4.18 J/C g, calculate the final temperature of the mixture.arrow_forwardA 5.00-g sample of aluminum pellets (specific heat capacity = 0.89 J/C g) and a 10.00-g sample of iron pellets (specific heat capacity = 0.45 J/C g) are heated to 100.0C. The mixture of hot iron and aluminum is then dropped into 97.3 g water at 22.0C. Calculate the final temperature of the metal and water mixture, assuming no heat loss to the surroundings.arrow_forward
- 9.50 When a 13.0-g sample of NaOH(s) dissolves in 400.0 mL of water in a coffee cup calorimeter, the temperature of the water changes from 22.6°C to 30.7C Assuming that the specific heat capacity of the solution is the same as for water, calculate (a) the heat transfer from system to surroundings and (b) H for the reaction NaOH(s)Na+(aq)+OH(aq)arrow_forwardA sample of nickel is heated to 99.8C and placed in a coffee-cup calorimeter containing 150.0 g water at 23.5C. After the metal cools, the final temperature of metal and water mixture is 25.0C. If the specific heat capacity of nickel is 0.444 J/C g, what mass of nickel was originally heated? Assume no heat loss to the surroundings.arrow_forwardWhen 1.0 g of fructose, C6H12O6(s), a sugar commonly found in fruits, is burned in oxygen in a bomb calorimeter, the temperature of the calorimeter increases by 1.58 C. If the heat capacity of the calorimeter and its contents is 9.90 kJ/C, what is q for this combustion?arrow_forward
- In a coffee-cup calorimeter, 100.0 mL of 1.0 M NaOH and 100.0 mL of 1.0 M HCI are mixed. Both solutions were originally at 24.6C. After the reaction, the final temperature is 31.3C. Assuming that all the solutions have a density of 1.0 g/cm3 and a specific heat capacity of 4.18 J/Cg, calculate the enthalpy change for the neutralization of HCl by NaOH. Assume that no heat is lost to the surroundings or to the calorimeter.arrow_forward9.100 Two baking sheets are made of different metals. You purchase both and bake a dozen cookies on each sheet at the same time in your oven. You observe that after 9 minutes, the cookies on one sheet are slightly burned on the bottom, whereas those on the other sheet are fine. (You are curious and you vary the conditions so you know the result is not caused by the oven.) (a) How can you use this observation to infer something about the specific heat of the materials in the baking sheets? (b) What is themathematical reasoning (equation) that you need to support your conclusion?arrow_forward
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