CHEMISTRY THE CENTRAL SCIENCE >EBOOK<
14th Edition
ISBN: 9780136873891
Author: Brown
Publisher: PEARSON
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Chapter 5, Problem 99AE
The air bags that provide protection in automobiles in the event of an accident expand because of a rapid
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Chapter 5 Solutions
CHEMISTRY THE CENTRAL SCIENCE >EBOOK<
Ch. 5.2 - A mixture of gases A2 and B2 are introduced to a...Ch. 5.2 - Practice Exercise 2 Calculate the change in the...Ch. 5.3 - A solid sample of Zn(OH)2 is added to 0.350 L of...Ch. 5.3 -
Practice Exercise 2
Calculate the work, in J, if...Ch. 5.3 - Practice Exercise 1 A chemical reaction that gives...Ch. 5.3 - Prob. 5.3.2PECh. 5.4 - Prob. 5.4.1PECh. 5.4 - Prob. 5.4.2PECh. 5.5 - The coinage metals (Group 1B) copper, silver, and...Ch. 5.5 - Prob. 5.5.2PE
Ch. 5.5 - Practice Exercise 1 When 0.243 g of Mg metal is...Ch. 5.5 - Practical exercise 2 When 50.0 mL of 0.100MAgNO3...Ch. 5.5 - Prob. 5.7.1PECh. 5.5 - Practice Exercise 2 A 0.5865-g sample of lactic...Ch. 5.6 - Prob. 5.8.1PECh. 5.6 - Prob. 5.8.2PECh. 5.6 - Calculate H for the reaction C(s)+...Ch. 5.6 - Prob. 5.9.2PECh. 5.7 - Prob. 5.10.1PECh. 5.7 - Prob. 5.10.2PECh. 5.7 - Prob. 5.11.1PECh. 5.7 - Prob. 5.11.2PECh. 5.7 -
Practice Exercise 1
Given 2SO2(g) + 02(g) —>...Ch. 5.7 - Prob. 5.12.2PECh. 5.8 - Use the average bond enthalpies in Table 5.41to...Ch. 5.8 -
Use the average bond enthalpies in Table 5.4 to...Ch. 5.9 - Prob. 5.14.1PECh. 5.9 - Prob. 5.14.2PECh. 5 - One of the important ideas of thermodynamics is...Ch. 5 - Two positively charged spheres, each with a charge...Ch. 5 - SI The accompanying photo shows a pipevine...Ch. 5 - Consider the accompanying energy diagram. Does...Ch. 5 - The contents of the closed box in each of the...Ch. 5 - Imagine that you are climbing a mountain. Is the...Ch. 5 - The diagram shows four states of a system, each...Ch. 5 - You may have noticed that when you compress the...Ch. 5 - Imagine a container placed in a tub of water, as...Ch. 5 - In the accompanying cylinder diagram, a chemical...Ch. 5 - Prob. 10ECh. 5 - Consider the two diagrams that follow. Based on...Ch. 5 - Consider the conversion of compound A into...Ch. 5 - What is the electrostatic potential energy (in...Ch. 5 - What is the electrostatic potential energy (in...Ch. 5 - The electrostatic force (not energy) of attraction...Ch. 5 - Use the equations given in Problem 5.15 to...Ch. 5 - A sodium ion, Na+, with a charge of 1.6 x 10-19 C...Ch. 5 - A magnesium ion, Mg2+, with a charge of 3.2 x...Ch. 5 - Identify the force present and explain whether...Ch. 5 - Identify the force present and explain whether...Ch. 5 - Which of the following cannot leave or enter a...Ch. 5 - Prob. 22ECh. 5 - According to the first law of thermodynamics, what...Ch. 5 - Write an equation that expresses the first law of...Ch. 5 - Calculate AB and determine whether the process is...Ch. 5 - For the following processes, calculate the change...Ch. 5 - A gas is confined to a cylinder fitted with a...Ch. 5 - Consider a system consisting of two oppositely...Ch. 5 - What is meant by the term state function? Give an...Ch. 5 - Indicate which of the following is independent of...Ch. 5 - During a normal breath, our lungs expand about...Ch. 5 - How much work (in J) is involved in a chemical...Ch. 5 - Why is the change in enthalpy usually easier to...Ch. 5 - Under what condition will the enthalpy change of a...Ch. 5 - Assume that the following reaction occurs at...Ch. 5 - Suppose that the gas-phase reaction 2NO(g) + 02(g)...Ch. 5 - A gas is confined to a cylinder under constant...Ch. 5 - A gas is confined to a cylinder under constant...Ch. 5 - The complete combustion of ethanol, C2H5OH(l), to...Ch. 5 - The decomposition of Ca(OH)2(s) into CaO(s) and...Ch. 5 - Ozone, 03(9), is a form of elemental oxygen that...Ch. 5 -
5.42 Without referring to tables, predict which...Ch. 5 - Consider the following reaction: 2 Mg(s) + 02(g)2...Ch. 5 -
544 Consider the following reaction:
2...Ch. 5 - When solutions containing silver ions and chloride...Ch. 5 - At one time, a common means of forming small...Ch. 5 -
5.47 Consider the combustion of liquid methanol,...Ch. 5 -
5.48 Consider the decomposition of liquid...Ch. 5 - 5.49
a What are the units of molar heat...Ch. 5 - Two solid objects, A and B, are placed in boiling...Ch. 5 - What is the specific heat of liquid water? What is...Ch. 5 -
5.52
a. Which substance in Table 5.2 requires...Ch. 5 - The specific heat of octane, C8H18(l), is 2.22...Ch. 5 -
6.54 Consider the data about gold metal in...Ch. 5 - When a 6-50-g sample of solid sodium hydroxide...Ch. 5 -
5.56
a. When a 4 25-g sample of solid ammonium...Ch. 5 - A 2.200-g sample of quinone (C5H402) is burned in...Ch. 5 -
8.68 A 1.800-g sample of phenol (C6H5OH) was...Ch. 5 - Under constant-volume conditions, the heat of...Ch. 5 -
5.60 Under constant-volume conditions, the heat...Ch. 5 -
5.61 Can you use an approach similar to Hess's...Ch. 5 -
5.62 Consider the following hypothetical...Ch. 5 - Calculate the enthalpy change for the reaction...Ch. 5 - From the enthalpies of reaction calculate H for...Ch. 5 - From the enthalpies of reaction Calculate H for...Ch. 5 - Given the data use Hess's law to calculate H for...Ch. 5 -
5.67
What is meant by the term standard...Ch. 5 - S
5.68
What is the value of the standard enthalpy...Ch. 5 - For each of the following compounds, write a...Ch. 5 - Write balanced equations that describe the...Ch. 5 - The following is known as the thermite reaction:...Ch. 5 -
5.72 Many portable gas heaters and grills use...Ch. 5 - Using values from Appendix C , calculate the...Ch. 5 -
5.74 Using values from Appendix C, calculate the...Ch. 5 - Complete combustion of 1 mol of acetone (C2H6O)...Ch. 5 - Calcium carbide (CaC2) reacts with water to form...Ch. 5 -
5.77 Gasoline is composed primarily of...Ch. 5 - Prob. 78ECh. 5 - Ethanol (C2H5OH) is blended with gasoline as an...Ch. 5 -
5.80 Methanol (CH3OH) is used as a fuel in race...Ch. 5 -
5.81 Without doing any calculations, predict the...Ch. 5 -
5.82 Without doing any calculations, predict...Ch. 5 - Use bond enthalpies in Table 5.4 Q to estimate for...Ch. 5 - Use bond enthalpies in Table 5.40 to estimate for...Ch. 5 - Use enthalpies of formation given in Appendix C to...Ch. 5 -
5.86
The nitrogen atoms in an N2 molecule are...Ch. 5 -
5.87 Consider the reaction 2H(g) + O2(g) ...Ch. 5 -
5.88 Consider the reaction H2(g) + I2(s) ...Ch. 5 -
5.89
What is meant by the term fuel value?
Which...Ch. 5 -
5.90
Which releases the most energy when...Ch. 5 -
5.91
A serving of a particular ready-to-serve...Ch. 5 -
5.92 A pound of plain M&M® candies contains 96 g...Ch. 5 -
5.93 The heat of combustion of fructose,...Ch. 5 -
5.94 The heat of combustion of ethanol,...Ch. 5 -
5.95 The standard enthalpies of formation of...Ch. 5 -
5.98 It is interesting to compare the ‘fuel...Ch. 5 - At the end of 2012, global population was about...Ch. 5 -
5.98 The automobile fuel called E85 consists of...Ch. 5 - The air bags that provide protection in...Ch. 5 -
5.100 An aluminum can of a soft drink is placed...Ch. 5 -
5.101 Consider a system consisting of the...Ch. 5 - A sample of gas is contained in a...Ch. 5 - Limestone stalactites and stalagmites are formed...Ch. 5 - Consider the systems shown in Figure 5.10. In one...Ch. 5 -
5.105 A house is designed to have passive solar...Ch. 5 -
5.108 A coffee-cup calorimeter of the type shown...Ch. 5 -
5.107
When a 0.235-9 sample of benzoic acid is...Ch. 5 -
5.108 Meals-ready-to-eat (MREs) are military...Ch. 5 - 5.109 Burning methane in oxygen can produce three...Ch. 5 - Prob. 110AECh. 5 -
5.111 From the following data for three...Ch. 5 - The hydrocarbons acetylene (C2H2) and benzene...Ch. 5 - Ammonia (NH3) boils at -33 °C; at this temperature...Ch. 5 -
5.114 Three common hydrocarbons that contain four...Ch. 5 -
5.115 A 201-lb man decides to add to his exercise...Ch. 5 -
5.116 TheSun supplies about 1.0 kilowatt of...Ch. 5 -
5.117 Itis estimated that the net amount of...Ch. 5 -
5.118 At 20 °C (approximately room temperature)...Ch. 5 - Suppose an Olympic diver who weighs 52.0 kg...Ch. 5 -
5.120 Consider the combustion of a single...Ch. 5 -
5.121 Consider the following unbalanced...Ch. 5 - Consider the following acid-neutralization...Ch. 5 -
5.123 Consider two solutions, the first being...Ch. 5 - The precipitation reaction between AgNO3(aq) and...Ch. 5 -
5.125 A sample of a hydrocarbon is combusted...Ch. 5 -
5.126 The methane molecule, CH4, has the geometry...Ch. 5 -
5.127 One of the best-selling light, or...
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- When 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_forwardThe statement Energycan beneithercreatednor destroyedis sometimes used as an equivalent statement of the first law of thermodynamics. There areinaccuracies to the statement, however. Restate it tomake it less inaccurate.arrow_forwardA sample of benzene, C6H6, weighing 3.51 g was burned in an excess of oxygen in a bomb calorimeter. The temperature of the calorimeter rose from 25.00C to 37.18C. If the heat capacity of the calorimeter and contents was 12.05 kJ/C, what is the value of q for burning 1.00 mol of benzene at constant volume and 25.00C? The reaction is C6H6(l)+152O2(g)6CO2(g)+3H2O(l) Is q equal to U or H?arrow_forward
- When a gas expands, what is the sign of w? Why? When a gas contracts, what is the sign of w? Why? What are the signs of q and w for the process of boiling water?arrow_forwardUnder what circumstances is the heat of a process equal to the enthalpy change for the process?arrow_forwardA sample of ethanol, C2H5OH, weighing 2.84 g was burned in an excess of oxygen in a bomb calorimeter. The temperature of the calorimeter rose from 25.00C to 33.73C. If the heat capacity of the calorimeter and contents was 9.63 kJ/C, what is the value of q for burning 1.00 mol of ethanol at constant volume and 25.00C? The reaction is C2H5OH(l)+3O2(g)2CO2(g)+3H2O(l) Is q equal to U or H?arrow_forward
- The head of a strike anywhere match contains tetraphosphorus trisulfide, P4S3. In an experiment, a student burned this compound in an excess of oxygen and found that it evolved 3651 kJ of heat per mole of P4S3 at a constant pressure of 1 atm. She wrote the following thermochemical equation: P4S3(s)+8O2(g)P4O10(s)+3SO2(g);H=3651kJ Calculate the standard enthalpy of formation of P4S3, using this students result and the following standard enthalpies of formation: P4O10(s), 3009.9 kJ/mol; SO2(g), 296.8 kJ/mol. How does this value compare with the value given in Appendix C?arrow_forwardThe enthalpy of combustion of solid carbon to form carbon dioxide is 393.7 KJ/mol carbon, and the enthalpy of combustion of carbon monoxide to form carbon dioxide is 283.3 KJ/mol CO. Use these data to calculate H for the reaction 2C(s)+O2(g)2CO(g)arrow_forwardWould the amount of heat absorbed by the dissolution in Example 5.6 appear greater, lesser, or remain the same if the heat capacity of the calorimeter were taken into account? Explain your answer.arrow_forward
- Three gas-phase reactions were run in a constant-pressure piston apparatus as shown in the following illustration. For each reaction, give the balanced reaction and predict the sign of w (the work done) for the reaction. . If just the balanced reactions were given, how could you predict the sign of w for a reaction?arrow_forwardWhen a rocket is launched, the burning gases are the source of the motion. If the system is the rocket (including fuel), what is the sign of the work?arrow_forwardNitrogen gas (2.75 L) is confined in a cylinder under constant atmospheric pressure (1.01 105 pascals). The volume of gas decreases to 2.10 L when 485 J of energy is transferred as heat to the surroundings. What is the change in internal energy of the gas?arrow_forward
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