EBK CHEMISTRY
1st Edition
ISBN: 9780133888584
Author: Tro
Publisher: VST
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Textbook Question
Chapter 4, Problem 1E
What are periodic properties?
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Reaction Fill-ins Part 2! Predict the
product(s) OR starting material of the
following reactions. Remember,
Hydride shifts are possible if/when a
more stable carbocation can exist
(depending on reaction mechanism)!
Put your answers in the indicated
boxes d.
d.
ง
HCI
A cylinder contains 12 L of water vapour at 150˚C and 5 atm. The temperature of the water vapour is raised to 175˚C, and the volume of the cylinder is reduced to 8.5 L. What is the final pressure of the gas in atmospheres?
assume that the gas is ideal
On the next page is an LC separation of the parabens found in baby wash. Parabens are
suspected in a link to breast cancer therefore an accurate way to quantitate them is desired.
a. In the chromatogram, estimate k' for ethyl paraben. Clearly indicate what values you used for
all the terms in your calculation.
b. Is this a "good" value for a capacity factor? Explain.
c. What is the resolution between n-Propyl paraben and n-Butyl paraben? Again, indicate clearly
what values you used in your calculation.
MAU
| Methyl paraben
40
20
0
-2
Ethyl paraben n-Propyl paraben
n-Butyl paraben
App ID 22925
6
8
min
Chapter 4 Solutions
EBK CHEMISTRY
Ch. 4 - 1. According to Coulomb's law, if the separation...Ch. 4 - Prob. 2SAQCh. 4 - Choose the correct electron configuration for Se....Ch. 4 - Prob. 4SAQCh. 4 - Which set of four quantum numbers corresponds to...Ch. 4 - Prob. 6SAQCh. 4 - Which statement is true about electron shielding...Ch. 4 - Prob. 8SAQCh. 4 - What is the electron configuration for Fe2+?...Ch. 4 - Which species is diamagnetic? Zn Cr 2+ C Mn
Ch. 4 - Prob. 11SAQCh. 4 - Prob. 12SAQCh. 4 - Prob. 13SAQCh. 4 - Prob. 14SAQCh. 4 - Prob. 15SAQCh. 4 - Prob. 16SAQCh. 4 - What are periodic properties?Ch. 4 - Use aluminum as an example to explain how density...Ch. 4 - Explain the contributions of Dobereiner and...Ch. 4 - Who is credited with arranging the periodic table?...Ch. 4 - Prob. 5ECh. 4 - Prob. 6ECh. 4 - What is an electron configuration? Provide an...Ch. 4 - Prob. 8ECh. 4 - Prob. 9ECh. 4 - What is penetration? How does the penetration of...Ch. 4 - Why are the sublevels within a principal level...Ch. 4 - Prob. 12ECh. 4 - Prob. 13ECh. 4 - What are degenerate orbitals? According to Hund’s...Ch. 4 - List all orbitals from 1s through 5s according to...Ch. 4 - Prob. 16ECh. 4 - Copy this blank periodic table onto a sheet of...Ch. 4 - Explain why the s block in the periodic table has...Ch. 4 - Explain why the rows in the periodic table become...Ch. 4 - Explain the relationship between a main-group...Ch. 4 - Explain the relationship between an element's row...Ch. 4 - Which of the transition elements in the first...Ch. 4 - Explain how to write the electron configuration...Ch. 4 - Explain the relationship between the properties of...Ch. 4 - Prob. 25ECh. 4 - Prob. 26ECh. 4 - What is effective nuclear charge? What is...Ch. 4 - When an alkali metal forms an ion, what is the...Ch. 4 - When a halogen forms an ion, what is the charge of...Ch. 4 - Use the concepts of effective nuclear charge,...Ch. 4 - For transition elements, describe the trends in...Ch. 4 - Prob. 32ECh. 4 - Explain how to write an electron configuration for...Ch. 4 - Prob. 34ECh. 4 - Prob. 35ECh. 4 - Prob. 36ECh. 4 - What are the exceptions to the periodic trends in...Ch. 4 - Prob. 38ECh. 4 - Prob. 39ECh. 4 - What is metallic character? What are the observed...Ch. 4 - Prob. 41ECh. 4 - Prob. 42ECh. 4 - Determine whether each element is a main-group...Ch. 4 - Determine whether each element is a transition...Ch. 4 - Write the full electron configuration for each...Ch. 4 - Prob. 46ECh. 4 - Write the full orbital diagram for each element. N...Ch. 4 - Prob. 48ECh. 4 - Use the periodic table to write the electron...Ch. 4 - Use the periodic table to determine the element...Ch. 4 - Use the periodic table to determine each quantity....Ch. 4 - Use the periodic table to determine each quantity....Ch. 4 - Prob. 53ECh. 4 - Prob. 54ECh. 4 - Determine the number of valence electrons in each...Ch. 4 - Prob. 56ECh. 4 - Which outer electron configuration would you...Ch. 4 - Prob. 58ECh. 4 - Prob. 59ECh. 4 - List the number of valence electrons in each...Ch. 4 - Which pair of elements do you expect to be most...Ch. 4 - Prob. 62ECh. 4 - Predict the charge of the ion formed by each...Ch. 4 - Predict the charge of the ion formed by each...Ch. 4 - According to Coulomb’s law, which pair of charged...Ch. 4 - Prob. 66ECh. 4 - Prob. 67ECh. 4 - Arrange the atoms according to decreasing...Ch. 4 - If core electrons completely shielded valence...Ch. 4 - In Section 3.6/, we estimated the effective...Ch. 4 - Prob. 71ECh. 4 - Choose the larger atom in each pair. Sn or Si Br...Ch. 4 - Arrange these elements in order of increasing...Ch. 4 - Arrange these elements in order of decreasing...Ch. 4 - Write the electron configuration for each ion. O2...Ch. 4 - Write the electron configuration for each ion. Cl...Ch. 4 - Write orbital diagrams for each ion and determine...Ch. 4 - Write orbital diagrams for each ion and determine...Ch. 4 - Which is the larger species in each pair? LiorLi+...Ch. 4 - Which is the larger species in each pair? SrorSr2+...Ch. 4 - Arrange this isoelectronic series in order of...Ch. 4 - Arrange this isoelectronic series in order of...Ch. 4 - Choose the element with the higher first...Ch. 4 - Prob. 84ECh. 4 - Arrange these elements in order of increasing...Ch. 4 - Prob. 86ECh. 4 - For each element, predict where the “jump” occurs...Ch. 4 - Prob. 88ECh. 4 - Choose the element with the more negative (more...Ch. 4 - Prob. 90ECh. 4 - Choose the more metallic element in each pair....Ch. 4 - Prob. 92ECh. 4 - Prob. 93ECh. 4 - Prob. 94ECh. 4 - Prob. 95ECh. 4 - Prob. 96ECh. 4 - Both vanadium and its 3+ ion are paramagnetic. Use...Ch. 4 - Use electron configurations to explain why copper...Ch. 4 - Prob. 99ECh. 4 - Suppose you were trying to find a substitute for...Ch. 4 - Prob. 101ECh. 4 - Which pair of elements would you expect to have...Ch. 4 - Consider these elements: N, Mg, O, F, Al. Write...Ch. 4 - Consider these elements: P, Ca, Si, S, Ga. Write...Ch. 4 - Prob. 105ECh. 4 - Explain why vanadium (radius = 134 pm) and copper...Ch. 4 - The lightest noble gases, such as helium and neon,...Ch. 4 - The lightest halogen is also the most chemically...Ch. 4 - Prob. 109ECh. 4 - Prob. 110ECh. 4 - Prob. 111ECh. 4 - Write the electronic configurations of the six...Ch. 4 - You have cracked a secret code that uses elemental...Ch. 4 - The electron affinity of sodium is lower than that...Ch. 4 - Use Coulomb’s law to calculate the ionization...Ch. 4 - Prob. 116ECh. 4 - Consider the densities and atomic radii of the...Ch. 4 - Prob. 118ECh. 4 - Consider the metals in the first transition...Ch. 4 - Imagine a universe in which the value of ms can be...Ch. 4 - A carbon atom can absorb radiation of various...Ch. 4 - Only trace amounts of the synthetic element...Ch. 4 - What is the atomic number of the as yet...Ch. 4 - The trend in second ionization energy for the...Ch. 4 - Unlike the elements in groups 1A and 2A, those in...Ch. 4 - Using the data in Figures 3.19 and 3.20/,...Ch. 4 - Prob. 127ECh. 4 - Prob. 128ECh. 4 - The heaviest known alkaline earth metal is radium,...Ch. 4 - Predict the electronic configurations of the first...Ch. 4 - Prob. 131ECh. 4 - The outermost valence electron in atom A...Ch. 4 - Prob. 133ECh. 4 - Give a combination of four quantum numbers that...Ch. 4 - Prob. 135E
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- d. In Figure 4, each stationary phase shows some negative correlation between plate count and retention factor. In other words, as k' increases, N decreases. Explain this relationship between k' and N. Plate Count (N) 4000 3500 2500 2000 1500 1000 Figure 4. Column efficiency (N) vs retention factor (k') for 22 nonionizable solutes on FMS (red), PGC (black), and COZ (green). 3000 Eluent compositions (acetonitrile/water, A/W) were adjusted to obtain k' less than 15, which was achieved for most solutes as follows: FMS (30/70 A/W), PGC (60/40), COZ (80/20). Slightly different compositions were used for the most highly retained solutes. All columns were 50 mm × 4.6 mm id and packed with 5 um particles, except for COZ, which was packed with 3 um particles. All other chromatographic conditions were constant: column length 5 cm, column j.§. 4.6 mm, flow rate 2 mL/min, column temperature 40 °C, and injection volume 0.5 μL Log(k'x/K'ethylbenzene) FMS 1.5 1.0 0.5 0.0 ཐྭ ཋ ཤྩ བྷྲ ; 500 0 5 10…arrow_forwardf. Predict how the van Deemter curve in Figure 7 would change if the temperature were raised from 40 °C to 55 °C. Figure 7. van Desmter curves in reduced coordinates for four nitroalkane homologues (nitropropane, black; nitrobutane, red; nitropentane, blue; and nitrohexane, green) separated on the FMS phase. Chromatographic conditions: column dimensions 50 mm × 4.6 mm id, eluent 30/70 ACN/water, flow rates 0.2-5.0 mL/min, injection volume 0.5 and column temperature 40 °C. No corrections to the plate heights have been made to account for extracolumn dispersion. Reduced Plate Height (h) ° 20 40 60 Reduced Velocity (v) 8. (2) A water sample is analyzed for traces of benzene using headspace analysis. The sample and standard are spiked with a fixed amount of toluene as an internal standard. The following data are obtained: Ppb benzene Peak area benzene Peak area toluene 10.0 252 376 Sample 533 368 What is the concentration of benzene in the sample?arrow_forwardLiquid chromatography has been used to track the concentration of remdesivir (a broad-spectrum antiviral drug, structure shown at right) in COVID patients undergoing experimental treatments. Intensity The authors provide the following details regarding standard solutions preparation: HN CN HO OH NH2 Remdesivir (RDV) stock solution (5000 µg/mL) was prepared by dissolving RDV drug powder using the mixture of DMSO: MeOH (30:70 v/v). The RDV working standard solutions for calibration and quality controls were prepared using methanol in concentrations of 100, 10, 1, 0.1, 0.01 µg/mL. 1, 2.5, 5, 7.5, 10, 25, 50, 75, 100, 250, 500, 1000, and 5000 ng/mL sample solutions were prepared freshly by spiking calibration standard solutions into the blank human plasma samples for method calibration. a) What type of calibration method is being described? Why do you think the authors chose this method as opposed to another? b) Based on the details provided in part a, describe an appropriate method blank…arrow_forward
- Recent advancements in liquid chromatography include the development of ultrahigh pressure liquid chromatography (UHPLC) and an increased use of capillary columns that had previously only been used with gas chromatography. Both of these advances have made the development of portable LC systems possible. For example, Axcend Corp. makes a portable system that uses a capillary column with an internal diameter of 150-μm-that is packed with 1.7-um stationary phase particles. In contrast, a traditional LC column has a 4.6 mm internal diameter and utilizes 5-um stationary phase particles. a) Explain one advantage that is afforded by the use of a capillary column in liquid chromatographic separation. Explain one disadvantage of capillary columns. b) Explain how the use of smaller stationary phase particles can improve the resolution of a separation. Include any relevant equations that support your explanation. c) A scientist at Rowan University is using the Axcend LC to conduct analyses of F…arrow_forwardThis paper describes the use of fullerene molecules, also known as buckyballs, as a stationary phase for liquid chromatography. The performance of the fullerene-modified stationary phase (FMS) is compared to that of a more common C18 stationary phase and to two other carbon-based stationary phases, PGC and COZ. A. 10A OM B. - Figure 1. Idealized drawing of the cross-section of a pore inside a silica particle, showing the relative densities of aminopropylsilyl (red/green) and fullerene (blue) groups: (A) full cross- section; (B) detailed view of covalent bonding of fullerene to the silica surface. Surface densities of silyl and fullerene groups were inferred from elemental composition results obtained at each stage of the synthesis (see Table 1). Absorbance (mAU, 220 nm) 700 600 500 400 300 200 100 a. Define selectivity, a, with words and an equation. b. Explain how the choice of stationary phase affects selectivity. c. Calculate the resolution of the nitrobenzene and toluene peaks in…arrow_forwardNormalized Intensity (a. u.) 0.5 1.0 A 3D-printed GC column (shown below) was created for use with "micro" gas chromatography applications. To prove its utility, it was used to separate a mixture of alkanes (C9-C18, C22, C24). For the separation shown below, the column temperature was ramped from 40 °C to 250 °C at a rate of 30 °C per minute. (a) 9 10 = 1 mm 12 13 15 22 0.0 0 100 200 300 400 Time (sec) a) What detector would you use for this analysis? Justify your selection. b) Explain how the chromatogram would change if the separation was run isothermally. c) Explain how the chromatogram would change if the temperature ramp were increased to 50 °C per minute.arrow_forward
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