Laboratory Experiments for Chemistry: The Central Science (14th Edition)
14th Edition
ISBN: 9780134566207
Author: Theodore E. Brown, H. Eugene LeMay, Bruce E. Bursten, Catherine Murphy, Patrick Woodward, Matthew E. Stoltzfus, John H. Nelson, Kenneth C. Kemp
Publisher: PEARSON
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Textbook Question
Chapter 1, Problem 61E
The density of air at ordinary atmospheric pressure and 25 ° C is 1.19 g/L. What is the mass, in kilograms, of the air in a room that measures 14.5 ft x 16.5 ft x 8.0 ft?
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"Water gas" is an industrial fuel composed of a mixture of carbon monoxide and hydrogen gases. When this
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and determine the enthalpy of this reaction:
CO(g) + O2(g) → CO₂(g) + 282.8 kJ
H2(g) + O2(g) → H₂O(g) + 241.8 kJ
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4. Calculate AG for the following reaction at 25°C. Will the reaction occur (be spontaneous)? How do you
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NH3(g) + HCl(g) → NH4Cl(s)
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AS-284.8 J-K-1
true or false
The equilibrium constant for this reaction is 0.20.
N2O4(g) ⇔ 2NO2(g)
Based on the above, the equilibrium constant for the following reaction is 5.
4NO2(g) ⇔ 2N2O4(g)
Chapter 1 Solutions
Laboratory Experiments for Chemistry: The Central Science (14th Edition)
Ch. 1.2 - Practice Exercise 1 Which of the following is the...Ch. 1.2 - Aspirin is composed of 60.0% carbon, 4.5%...Ch. 1.5 - Practice Exercise 1 Which of the following weights...Ch. 1.5 - Practice Exercise 2 How many picometers are there...Ch. 1.5 - Practice Exercise 1 Using Wolfram Alpha...Ch. 1.5 - Practice Exercise 2 Ethylene glycol, the major...Ch. 1.5 - Practice Exercise 1 Platinum, Pt. is one of the...Ch. 1.5 - Practice Exercise 2 Calculate the density of a...Ch. 1.5 - Which of the following objects has the greatest...Ch. 1.5 - Prob. 1.5.2PE
Ch. 1.6 - Which of the following numbers in your personal...Ch. 1.6 - Practice Exercise 2 The back inside cover of the...Ch. 1.6 - Practice Exercise 1 An object is determined to...Ch. 1.6 - Practice Exercise 2 How many significant figures...Ch. 1.6 - Ellen recently purchased a new hybrid car and...Ch. 1.6 - Practice Exercise 2 It takes 10.5 s for a sprinter...Ch. 1.6 - Practice Exercise 1 You are asked to determine the...Ch. 1.6 - Practice Exercise 1 At a particular instant in...Ch. 1.7 - Practice Exercise 2 By using a conversion factor...Ch. 1.7 - Practice Exercise 1 Fabiola, who lives in Mexico...Ch. 1.7 - Practice Exercise 2 A car travels 28 mi per gallon...Ch. 1.7 - Practice Exercise 2 A car travels 28 mi per gallon...Ch. 1.7 - Practice Exercise 2 The surface area of Earth is...Ch. 1.7 - Practice Exercise 1 Composite decking is a...Ch. 1.7 - Practice Exercise 2 The density of the organic...Ch. 1.7 - Practice Exercise 2 If the mass of the container...Ch. 1 - Prob. 1ECh. 1 - Prob. 2ECh. 1 - Musical instruments like trumpets and trombones...Ch. 1 - Consider the two spheres shown here, one made of...Ch. 1 - Is the separation method used in brewing a cup of...Ch. 1 - Identify each of the following as measurements of...Ch. 1 - Three spheres of equal size are composed of...Ch. 1 - The three targets from a rifle range shown below...Ch. 1 - What is the length of the pencil in the following...Ch. 1 - How many significant figures should be reported...Ch. 1 - Consider the jar of jelly beans in the photo. To...Ch. 1 - The photo below shows a picture of an agate stone....Ch. 1 - Classify each of the following as a pure substance...Ch. 1 - Classify each of the following as a pure substance...Ch. 1 - 1.15 Give the chemical symbol or name for the...Ch. 1 - 1.16 Give the chemical symbol or name for each of...Ch. 1 - A solid white substance A is heated strongly in...Ch. 1 - 1.18 You are hiking in the mountains and find a...Ch. 1 - 1.19 In the process of attempting to characterize...Ch. 1 - 1.20
Read the following description of the element...Ch. 1 - Prob. 21ECh. 1 - A match is lit and held under a cold piece of...Ch. 1 - Which separation method is better suited for...Ch. 1 - Two beakers contain clear, colorless liquids. When...Ch. 1 - Prob. 25ECh. 1 - Prob. 26ECh. 1 - Prob. 27ECh. 1 - Prob. 28ECh. 1 - Prob. 29ECh. 1 - Prob. 30ECh. 1 - 121 What exponential notation do the following...Ch. 1 -
1.32 Use appropriate metric prefixes to write the...Ch. 1 - Make the following conversions. 72 °F to °C, 216.7...Ch. 1 - a. The temperature on a warm summer day is 87 °F....Ch. 1 - Prob. 35ECh. 1 - A cube of osmium metal 1.500 cm on a side has a...Ch. 1 - To identify a liquid substance, a student...Ch. 1 - a. After the label fell off a bottle containing a...Ch. 1 - Prob. 39ECh. 1 -
1.40 Silicon for computer chips is grown in large...Ch. 1 - Prob. 41ECh. 1 - 1.42 A watt is a measure of power (the rate of...Ch. 1 - Indicate which of the following are exact numbers;...Ch. 1 - Indicate which of the following are exact numbers:...Ch. 1 - 1.45 What is the number of significant figures in...Ch. 1 - Indicate the number of significant figures in each...Ch. 1 - 1.47 Round each of the following numbers to four...Ch. 1 - 1.48
The diameter of Earth at the equator is 7926...Ch. 1 - Carry out the following operations and express the...Ch. 1 - Carry out the following operations and express the...Ch. 1 - You weigh an object on a balance and read the mass...Ch. 1 - You have a graduated cylinder that contains a...Ch. 1 - 153 Using your knowledge of metric units, English...Ch. 1 - 1.54 Using your knowledge of metric units, English...Ch. 1 - A bumblebee flies with a ground speed of 15.2 m/s....Ch. 1 - 1 56
a The speed of light in a vacuum is 2.998 x...Ch. 1 - Perform the following conversions: 5.00 days to s,...Ch. 1 - Carry out the following conversions: 0.105 in. to...Ch. 1 - How many liters of wine can be held in a wine...Ch. 1 - If an electric car is capable of going 225 km on a...Ch. 1 - The density of air at ordinary atmospheric...Ch. 1 - 1.62 The concentration of carbon monoxide in an...Ch. 1 - Prob. 63ECh. 1 - 1.64 A copper refinery produces a copper ingot...Ch. 1 - 165 Classify ea. al the folbwing as a pure...Ch. 1 - 1.66
Which is more likely to eventually be shown...Ch. 1 -
1.67 A sample of ascorbic acid (vitamin C) is...Ch. 1 - Prob. 68AECh. 1 - SO Two students deterrmne the percen.ge of lead in...Ch. 1 - 1.70
Is Om use of significant figures in ea. of...Ch. 1 - What type of quantity (for example, length,...Ch. 1 - 1.72 Give the derived SI units for each of the...Ch. 1 - 1.73 The distance from Earth to the Moon is...Ch. 1 - 1.74 Which of the following would you characterize...Ch. 1 -
1.75 The U.S. quarter has a mass of 5.67 g and is...Ch. 1 -
1.76 In the United States, water used for...Ch. 1 -
1.77 By using estimation techniques, determine...Ch. 1 - Suppose you decide to define your own temperature...Ch. 1 -
1.79 The liquid substances mercury (density =...Ch. 1 -
1.80 Two spheres of equal volume are placed on...Ch. 1 - Water has a density of 0.997 g/cm3 at 25C ; ice...Ch. 1 - A 32.65-g sample of a solid is placed in a flask....Ch. 1 - A thief plans to steal a gold sphere with a radius...Ch. 1 - Automobile batteries contain sulfuric acid, which...Ch. 1 - A 40-lb container of peat moss measures 14 x 20 x...Ch. 1 - A package of aluminum foil contains 50 ft2of foil,...Ch. 1 - Prob. 87AECh. 1 -
1.88 In 2005, J. Robin Warren and Barry J....Ch. 1 -
1 89 A 25 0-cm.long cylindrical glass tube,...Ch. 1 -
1.90 Gold is alloyed (mixed) with other metals to...Ch. 1 -
1.91 Paper chromatography is a simple but...Ch. 1 -
1.92 Judge the following statements as true or...Ch. 1 -
1.93 You are assigned the task of separating a...Ch. 1 - Prob. 94AE
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- true or false The equilibrium constant for this reaction is 0.20. N2O4(g) ⇔ 2NO2(g) Based on the above, the equilibrium constant for the following reaction is 0.4. 2N2O4(g) ⇔ 4NO2(g)arrow_forwardtrue or false Using the following equilibrium, if heat is added the equilibrium will shift toward the reactants. N2(g) + 3H2(g) ⇔ 2NH3(g) + heatarrow_forwardTrue or False Using the following equilibrium, if heat is added the equilibrium will shift toward the products. N2O4(g) + heat ⇔ 2NO2(g)arrow_forward
- true or false Using the following equilibrium, if solid carbon is added the equilibrium will shift toward the products. C(s) + CO2(g) ⇔ 2CO(g)arrow_forwardProvide the complete mechanism for the reaction below. You must include appropriate arrows,intermediates, and formal charges. Please also provide a reason to explain why the 1,4-adduct is preferred over the 1,3-adduct.arrow_forwardWhich of the following pairs are resonance structures of one another? I. III. || III IV + II. :0: n P !༠ IV. EN: Narrow_forward
- Predict the major organic product(s) and byproducts (either organic or inorganic) for thefollowing reactions.arrow_forwardA 8.25 g sample of aluminum at 55°C released 2500 J of heat. The specific heat of aluminum is 0.900 J/g°C. The density of aluminum is 2.70 g/mL. Calculate the final temperature of the aluminum sample in °C.arrow_forwardPredict the major organic product(s) and byproducts (either organic or inorganic) for thefollowing reactions.arrow_forward
- Predict the major organic product(s) and byproducts (either organic or inorganic) for thefollowing reaction.arrow_forwardplease helparrow_forwardExperiment 1 Data Table 1: Conservation of Mass - Initial Mass Data Table 1 Data Table 2 Data Table 3 Data Table 4 Panel 1 Photo 1 Data Table 5 Reaction Mass of test tube and 5.0% HC₂H₂O2 (g) # (A) (B) Mass of NaHCO, (g) Mass of balloon and NaHCO, (g) (C) 0.10 1 0829 14.38g 0.20 2 0.929 14.29g 0.35 1.00g 3 14.25g 0.50 1.14g 14.29 Experiment 1 Data Table 2: Moles of HC2H3O2 Reaction Volume of Mass of Moles of HC₂H₂O₂ 5.0% Vinegar (g) (ML) 5.0 0.25 0042 mol 2 5.0 0.25 0042 mol 3 5.0 0.25 0042 mol 5.0 0.25 0042 mol Experiment 1 Data Table 3: Moles of NaHCO3 Reaction Mass of NaHCO (g) 10g 20g 35g 50g Experiment 1 Data Table 4: Theoretical Yield of CO₂ Reaction # 1 2 3 Experiment 1 Total mass before reaction (g) (D=A+C) 15.29 15.21g 15.25g 15.349 Exercise 1 Data Table 1 Data Table 2 Data Table 3 Data Table 4 Panel 1 Photo 1 Data Table 5 Exercise 1- Data Table 1 Data Table 2 DataTable 3 Data Table 4 Panel 1 Photo 1 Data Table 5 Exercise 1- Moles of NaHCO 0012 mol 0025 mol 0044 mol 0062 mol…arrow_forward
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