Chemistry: Principles and Reactions
8th Edition
ISBN: 9781305079373
Author: William L. Masterton, Cecile N. Hurley
Publisher: Cengage Learning
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Textbook Question
Chapter 8, Problem 3QAP
Copper is used in building the integrated circuits, chips, and printed circuit boards for computers. When 228 J of heat are absorbed by 125 g of copper at 22.38°C, the temperature rises to 27.12°C. What is the specific heat of copper?
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Chapter 8 Solutions
Chemistry: Principles and Reactions
Ch. 8 - Principles of Heat Flow Titanium is a metal used...Ch. 8 - Prob. 2QAPCh. 8 - Copper is used in building the integrated...Ch. 8 - Mercury was once used in thermometers and...Ch. 8 - The specific heat of aluminum is 0.902J/gC. How...Ch. 8 - Chromium has a specific heat of 0.450J/gC. How...Ch. 8 - Magnesium sulfate is often used in first-aid hot...Ch. 8 - Sodium chloride is added in cooking to enhance the...Ch. 8 - When 375 mL of water (d=1.00g/mL) at 32C are mixed...Ch. 8 - How many mL of water at 10C (2 significant...
Ch. 8 - When one mol of KOH is neutralized by sulfuric...Ch. 8 - The heat of neutralization, Hneut, can be defined...Ch. 8 - Fructose is a sugar commonly found in fruit. A...Ch. 8 - In earlier times, ethyl ether was commonly used as...Ch. 8 - Isooctane is a primary component of gasoline and...Ch. 8 - Ethyl alcohol, C2H5OH, is the intoxicating agent...Ch. 8 - Acetic acid, HC2H3O2, is responsible for the sour...Ch. 8 - Acetylene, C2H2, is used in welding torches. It...Ch. 8 - Salicylic acid, C7H6O3, is one of the starting...Ch. 8 - Methanol (CH3OH) is also known as wood alcohol and...Ch. 8 - Nitrogen oxide (NO) has been found to be a key...Ch. 8 - Small amounts of oxygen gas can be prepared in the...Ch. 8 - In the late eighteenth century Priestley prepared...Ch. 8 - Prob. 24QAPCh. 8 - Strontium metal is responsible for the red color...Ch. 8 - Nitroglycerin, C3H5(NO3)3(l), is an explosive most...Ch. 8 - A typical fat in the body is glyceryl trioleate,...Ch. 8 - Use the same fat described in Question 27. (a)...Ch. 8 - Which requires the absorption of a greater amount...Ch. 8 - Which evolves more heat—freezing 100.0 g of...Ch. 8 - A student is asked to calculate the amount of heat...Ch. 8 - Follow the step-wise process outlined in Problem...Ch. 8 - A lead ore, galena, consisting mainly of lead(II)...Ch. 8 - A reaction used to produce the silicon for...Ch. 8 - Given the following thermochemical equations,...Ch. 8 - Given the following thermochemical equations:...Ch. 8 - Write thermochemical equations for the...Ch. 8 - Write thermochemical equations for the formation...Ch. 8 - Given 2Al2O3(s)4Al(s)+3O2(g)H=3351.4kJ (a) What is...Ch. 8 - Given 2Cr2O3(s)4Cr(s)+3O2(g)H=+2269.4kJ (a) What...Ch. 8 - Limestone, CaCO3, when subjected to a temperature...Ch. 8 - When hydrazine reacts with oxygen, nitrogen gas...Ch. 8 - Use Table 8.3 to obtain AHO for the following...Ch. 8 - Use Table 8.3 to obtain H for the following...Ch. 8 - Use the appropriate tables to calculate H for (a)...Ch. 8 - Use the appropriate tables to calculate H for (a)...Ch. 8 - When one mole of nitroglycerine, C3H5(NO3)3(l)...Ch. 8 - When one mole of calcium carbonate reacts with...Ch. 8 - Chlorine trifluoride is a toxic, intensely...Ch. 8 - When one mole of ethylene gas, C2H4, reacts with...Ch. 8 - Glucose, C6H12O6(s), (H f =1275.2kJ/mol) is...Ch. 8 - When ammonia reacts with dinitrogen oxide gas (H f...Ch. 8 - How many kJ are equal to 3.27 L atm of work?Ch. 8 - How many L atm are equal to 12.2 kJ of work?Ch. 8 - Find (a) E when a gas absorbs 18 J of heat and has...Ch. 8 - Calculate (a) q when a system does 54 J of work...Ch. 8 - Consider the following reaction in a vessel with a...Ch. 8 - Consider the following reaction in the vessel...Ch. 8 - Determine the difference between H and E at 25C...Ch. 8 - For the vaporization of one mole of bromine at...Ch. 8 - Consider the combustion of propane, C3H8, the fuel...Ch. 8 - Consider the combustion of one mole of methyl...Ch. 8 - Butane gas, C4H10, is sold to campers as bottled...Ch. 8 - The BTU (British thermal unit) is the unit of...Ch. 8 - Natural gas companies in the United States use the...Ch. 8 - Prob. 66QAPCh. 8 - Given the following reactions,...Ch. 8 - In World War II, the Germans made use of otherwise...Ch. 8 - Prob. 69QAPCh. 8 - Consider the reaction between methane and oxygen...Ch. 8 - Consider burning ethane gas, C2H6 in oxygen...Ch. 8 - On complete combustion at constant pressure, a...Ch. 8 - Microwave ovens convert radiation to energy. A...Ch. 8 - In 2010, 3.30109 gallons of gasoline were consumed...Ch. 8 - Some solar-heated homes use large beds of rocks to...Ch. 8 - Consider a solution prepared by dissolving 10.00 g...Ch. 8 - Draw a cylinder with a movable piston containing...Ch. 8 - Redraw the cylinder in Question 77 after work has...Ch. 8 - Which statement(s) is/are true about bond...Ch. 8 - Equal masses of liquid A, initially at 100C, and...Ch. 8 - Determine whether the statements given below are...Ch. 8 - An exothermic reaction is carried out in a...Ch. 8 - Determine whether the statements given below are...Ch. 8 - Microwave ovens emit microwave radiation that is...Ch. 8 - On a hot day, you take a six-pack ot a on a pcmc,...Ch. 8 - Prob. 86QAPCh. 8 - The thermite reaction was once used to weld rails:...Ch. 8 - A sample of sucrose, C12H22O11, is contaminated by...Ch. 8 - A wad of steel wool (specific heat=0.45J/gC) at...Ch. 8 - Consider a metal ion A2+ and its nitrate salt, In...
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- A 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_forwardHow much heat is required to raise the temperature of 100. grams of water from 25C near room temperature to 100.C its boiling point? The specific heat of water is approximately 4.2Jperg-K. a.3.2104J b.32J c.4.2104J d.76Jarrow_forwardAn iron skillet weighing 1.63 kg is heated on a stove to 178C. Suppose the skillet is cooled to room temperature, 21C. How much heat energy (in joules) must be removed to affect this cooling? The specific heat of iron is 0.449 J/(gC).arrow_forward
- You have two samples of different metals, metal A and metal B, each having the same mass. You heat both metals to 95C and then place each one into separate beakers containing the same quantity of water at 25C. a You measure the temperatures of the water in the two beakers when each metal has cooled by 10C and find that the temperature of the water with metal A is higher than the temperature of the water with metal B. Which metal has the greater specific heat? Explain. b After waiting a period of time, the temperature of the water in each beaker rises to a maximum value. In which beaker does the water temperature rise to the higher value, the one with metal A or the one with metal B? Explain.arrow_forward9.33 Copper wires used to transport electrical current heat up because of the resistance of the wire. If a 140-g wire gains 280 J of heat, what is the change in temperature in the wire? Copper has a specific heat of 0.384Jg1C1 .arrow_forwardThe temperature of the cooling water as it leaves the hot engine of an automobile is 240 F. After it passes through the radiator it has a temperature of 175 F. Calculate the amount of heat transferred from the engine to the surroundings by one gallon of water with a specific heat of 4.184 J/g oC.arrow_forward
- A piece of iron was heated to 95.4C and dropped into a constant-pressure calorimeter containing 284 g of water at 32.2C. The final temperature of the water and iron was 51.9C. Assuming that the calorimeter itself absorbs a negligible amount of heat, what was the mass (in grams) of the piece of iron? The specific heat of iron is 0.449 J/(gC), and the specific heat of water is 4.18 J/(gC).arrow_forwardA 110.-g sample of copper (specific heat capacity = 0.20 J/C g) is heated to 82.4C and then placed in a container of water at 22.3C. The final temperature of the water and copper is 24.9C. What is the mass of the water in the container, assuming that all the heat lost by the copper is gained by the water?arrow_forwardThe specific heat of copper metal was determined by putting a piece of the metal weighing 35.4 g in hot water. The quantity of heat absorbed by the metal was calculated to be 47.0 J from the temperature drop of the water. What was the specific heat of the metal if the temperature of the metal rose 3.45C?arrow_forward
- A 500-mL bottle of water at room temperature and a 2-L bottle of water at the same temperature were placed in a refrigerator. After 30 minutes, the 500-mL bottle of water had cooled to the temperature of the refrigerator. An hour later, the 2-L of water had cooled to the same temperature. When asked which sample of water lost the most heat, one student replied that both bottles lost the same amount of heat because they started at the same temperature and finished at the same temperature. A second student thought that the 2-L bottle of water lost more heat because there was more water. A third student believed that the 500-mL bottle of water lost more heat because it cooled more quickly. A fourth student thought that it was not possible to tell because we do not know the initial temperature and the final temperature of the water. Indicate which of these answers is correct and describe the error in each of the other answers.arrow_forwardHow much heat is evolved when 1255 g of water condensesto a liquid at 100°C?arrow_forward
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