CHEMISTRY THE CENTRAL SCIENCE 14TH EDI
14th Edition
ISBN: 9780134863016
Author: Brown
Publisher: PEARSON
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Chapter 1, Problem 69AE
SO Two students deterrmne the percen.ge of lead in a sample as a laboratory exercise Thelrue percentage is 22 52% The s.dentsr resul. ler three determinations are as fellows
1 22 52, 22 413, 22 54
220422 58,2262
a Calculate Me average percentage for each set of data and sta. which set is the more accurate based on .e average
b Precision can be Judged by examinrng the average of the devrahons from the average value for that da. (CalcAare the average value for each,. set then calculate the average aue of the absolute deviations of each measurerne. from the average ), Which.. more Precrse9
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Part V. Label ad match the carbons in compounds Jane and Diane
w/ the corresponding peak no.
in the
Spectra (Note: use the given peak no. To label the carbons, other peak
no are intentionally
omitted)
7 4 2
-0.13
-0.12
-0.11
-0.10
-0.08
8
CI
Jane
1
-0.09
5
210
200
190
180
170
160
150
140
130
120
110
100
-8
90
f1 (ppm)
11
8
172.4
172.0
f1 (ppr
HO
CI
NH
Diane
7
3
11
80
80
-80
-R
70
60
60
2
5
-8
50
40
8.
170
160
150
140
130
120
110
100
90
-0
80
70
20
f1 (ppm)
15
30
-20
20
-60
60
-0.07
-0.06
-0.05
-0.04
-0.03
-0.02
-0.01
-0.00
-0.01
10
-0.17
16
15
56
16
-0.16
-0.15
-0.14
-0.13
-0.12
-0.11
-0.10
-0.09
-0.08
-0.07
-0.06
-0.05
-0.04
17.8 17.6 17.4 17.2 17.0
f1 (ppm)
-0.03
-0.02
550
106
40
30
20
20
-0.01
-0.00
F-0.01
10
0
Chapter 1 Solutions
CHEMISTRY THE CENTRAL SCIENCE 14TH EDI
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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- n Feb 3 A T + 4. (2 pts) Draw the structure of the major component of the Limonene isolated. Explain how you confirmed the structure. 5. (2 pts) Draw the fragment corresponding to the base peak in the Mass spectrum of Limonene. 6. (1 pts) Predict the 1H NMR spectral data of R-Limonene. Proton NMR: 5.3 pon multiplet (H Ringarrow_forwardPart VI. Ca H 10 O is the molecular formula of compound Tom and gives the in the table below. Give a possible structure for compound Tom. 13C Signals summarized C1 C2 C3 C4 C5 C6 C7 13C shift (ppm) 23.5 27.0 33.0 35.8 127 162 205 DEPT-90 + DEPT-135 + +arrow_forward2. Using the following data to calculate the value of AvapH o of water at 298K. AvapH o of water at 373K is 40.7 kJ/mol; molar heat capacity of liquid water at constant pressure is 75.2J mol-1 K-1 and molar heat capacity of water vapor at constant pressure is 33.6 J mol-1 K-1.arrow_forward
- Part VII. Below are the 'HNMR 13 3 C-NMR, COSY 2D- NMR, and HSQC 20-NMR (Similar with HETCOR but axes are reversed) spectra of an organic compound with molecular formula C6H13 O. Assign chemical shift values to the H and c atoms of the compound. Find the structure. Show complete solutions. Predicted 1H NMR Spectrum ли 4.7 4.6 4.5 4.4 4.3 4.2 4.1 4.0 3.9 3.8 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 f1 (ppm)arrow_forward3. Draw the expanded structural formula, the condensed structural formula, and the skeletal structural formula for 2-pentene. expanded structure: Condensed structure: Skeletal formula: 4. Draw the expanded structural formula, the condensed structural formula, and the skeletal structural formula for 2-methyl-3-heptene. expanded structure: Condensed structure: Skeletal formula: following structurearrow_forwardPart IV. Propose a plausible Structure w/ the following descriptions: a) A 5-carbon hydrocarbon w/ a single peak in its proton decoupled the DEPT-135 Spectrum shows a negative peak C-NMR spectrum where b) what cyclohexane dione isomer gives the largest no. Of 13C NMR signals? c) C5H120 (5-carbon alcohol) w/ most deshielded carbon absent in any of its DEPT Spectivaarrow_forward
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