
Chemistry
9th Edition
ISBN: 9781133611097
Author: Steven S. Zumdahl
Publisher: Cengage Learning
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Chapter 19, Problem 65AE
Interpretation Introduction
Interpretation: Use of tritium as a component of fluorescent watch dials and its half life is given. The year upto which the time at night can be read using the given kind of watch is to be calculated.
Concept introduction: A process through which an unstable nuclide looses its energy due to excess of protons or neutrons is known as radioactive decay. The cause of instability of a nuclide is its inefficiency in holding the nucleus together. Tritium was used as a component of fluorescent watch dials during world war
To determine: The year up to which the time at night can be read using the given kind of watch.
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2. Specify the solvent and reagent(s) required to carry out each of the following FGI. If
two reagent sets must be used for the FGI, specify the solvent and reagent(s) for each
reagent set. If a reaction cannot be carried out with reagents (sets)
class, write NP (not possible) in the solvent box for reagent set #1.
Use the letter abbreviation for each solvent; use a number abbreviation for reagent(s).
Solvents: CH2Cl2 (A);
H₂O (B);
Reagents:
HBr (1);
R₂BH (6);
H2SO4 (2);
CH3OH (C);
Br₂ (3);
CH3CO₂H (D)
NaHCO3 (4);
Hg(OAc)2 (5);
H₂O2/HO (7);
NaBH4 (8)
Reagent Set #1
Reagent Set #2
FGI
+ enant
OH
Solvent Reagent(s) Solvent Reagent(s)
Germanium (Ge) is a semiconductor with a bandgap of 2.2 eV. How could you dope Ge to make it a p-type semiconductor with a larger bandgap?
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It is impossible to dope Ge and have this result in a larger bandgap.
Dope the Ge with silicon (Si)
Dope the Ge with gallium (Ga)
Dope the Ge with phosphorus (P)
Which of the following semiconductors would you choose to have photons with the longest possible wavelengths be able to promote electrons to the semiconductor's conduction band?
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Si
Ge
InSb
CdS
Chapter 19 Solutions
Chemistry
Ch. 19 - Prob. 1RQCh. 19 - Prob. 2RQCh. 19 - Prob. 3RQCh. 19 - Prob. 4RQCh. 19 - Prob. 5RQCh. 19 - Prob. 6RQCh. 19 - Prob. 7RQCh. 19 - Prob. 8RQCh. 19 - Prob. 9RQCh. 19 - Prob. 10RQ
Ch. 19 - Prob. 1QCh. 19 - Prob. 2QCh. 19 - Prob. 3QCh. 19 - Prob. 4QCh. 19 - Prob. 5QCh. 19 - Prob. 6QCh. 19 - Prob. 7QCh. 19 - Prob. 8QCh. 19 - Prob. 9QCh. 19 - Prob. 10QCh. 19 - Prob. 11ECh. 19 - Prob. 12ECh. 19 - Prob. 13ECh. 19 - Prob. 14ECh. 19 - Prob. 15ECh. 19 - Prob. 16ECh. 19 - Prob. 17ECh. 19 - Prob. 18ECh. 19 - Prob. 19ECh. 19 - Prob. 20ECh. 19 - Prob. 21ECh. 19 - Prob. 23ECh. 19 - Prob. 24ECh. 19 - Prob. 26ECh. 19 - Prob. 27ECh. 19 - Prob. 28ECh. 19 - Prob. 29ECh. 19 - Prob. 30ECh. 19 - Prob. 31ECh. 19 - Prob. 32ECh. 19 - Prob. 33ECh. 19 - Prob. 34ECh. 19 - Prob. 35ECh. 19 - Prob. 36ECh. 19 - Prob. 37ECh. 19 - Prob. 38ECh. 19 - Prob. 39ECh. 19 - Prob. 40ECh. 19 - Prob. 41ECh. 19 - Prob. 42ECh. 19 - Prob. 43ECh. 19 - Prob. 44ECh. 19 - Prob. 46ECh. 19 - Prob. 47ECh. 19 - Prob. 48ECh. 19 - Prob. 49ECh. 19 - Prob. 50ECh. 19 - Prob. 51ECh. 19 - Prob. 52ECh. 19 - Prob. 53ECh. 19 - Prob. 54ECh. 19 - Prob. 55ECh. 19 - Prob. 56ECh. 19 - Prob. 57ECh. 19 - Prob. 58ECh. 19 - Prob. 59AECh. 19 - Prob. 60AECh. 19 - Prob. 61AECh. 19 - Prob. 62AECh. 19 - Prob. 63AECh. 19 - Prob. 64AECh. 19 - Prob. 65AECh. 19 - Prob. 66AECh. 19 - Prob. 67AECh. 19 - Prob. 68AECh. 19 - Prob. 69AECh. 19 - Prob. 70AECh. 19 - Prob. 71AECh. 19 - Prob. 72AECh. 19 - Prob. 73CWPCh. 19 - Prob. 74CWPCh. 19 - Prob. 75CWPCh. 19 - Prob. 76CWPCh. 19 - Prob. 77CWPCh. 19 - Prob. 78CWPCh. 19 - Prob. 79CPCh. 19 - Prob. 80CPCh. 19 - Prob. 81CPCh. 19 - Prob. 82CPCh. 19 - Prob. 83CPCh. 19 - Prob. 84CPCh. 19 - Prob. 85CPCh. 19 - Prob. 86CPCh. 19 - Prob. 87IPCh. 19 - Prob. 88IP
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- Which of the following metals is the only one with all of its bands completely full? Group of answer choices K Na Ca Alarrow_forward2. Specify the solvent and reagent(s) required to carry out each of the following FGI. If two reagent sets must be used for the FGI, specify the solvent and reagent(s) for each reagent set. If a reaction cannot be carried out with reagents (sets) class, write NP (not possible) in the solvent box for reagent set #1. Use the letter abbreviation for each solvent; use a number abbreviation for reagent(s). Solvents: CH2Cl2 (A); Reagents: H₂O (B); CH3CO₂H (D) NaHCO3 (4); Hg(OAc)2 (5); HBr (1); R₂BH (6); H2SO4 (2); CH3OH (C); Br₂ (3); H₂O₂ / HO- (7); NaBH4 (8) Reagent Set #1 Reagent Set #2 FGI OH - α-α Br + enant Solvent Reagent(s) Solvent Reagent(s)arrow_forwardBased on concepts from Lecture 3-5, which of the following ionic compounds should be most soluble in water? Group of answer choices MgO BeO CaO BaOarrow_forward
- From an energy standpoint, which two process - in the correct order - are involved in the dissolving of an ionic compound crystal? Group of answer choices Water coordination to the ions followed by sublimation into the gas phase Sublimation of the crystal into gas-phase ions followed by water coordination to the ions Ion dissociation from the crystal followed by water coordination to the ions Water coordination to the ions followed by ion dissociation from the crystalarrow_forwardFor which Group 2 metal (M), is this process the most exothermic? M2+(g) + O2−(g) + CO2(g) → MO(s) + CO2(g) Group of answer choices M = Sr M = Mg M = Ca M = Baarrow_forward2. Specify the solvent and reagent(s) required to carry out each of the following FGI. If two reagent sets must be used for the FGI, specify the solvent and reagent(s) for each reagent set. If a reaction cannot be carried out with reagents (sets) class, write NP (not possible) in the solvent box for reagent set #1. Use the letter abbreviation for each solvent; use a number abbreviation for reagent(s). Solvents: CH2Cl2 (A); H₂O (B); Reagents: HBr (1); H2SO4 (2); CH3OH (C); Br₂ (3); CH3CO₂H (D) NaHCO3 (4); Hg(OAc)2 (5); R₂BH (6); H₂O₂ / HO- (7); NaBH4 (8) Reagent Set #1 Reagent Set #2 FGI Solvent Reagent(s) Solvent Reagent(s) HO OHarrow_forward
- For which of the following ionic compounds would you expect the smallest difference between its theoretical and experimental lattice enthalpies? (You may assume these all have the same unit cell structure.) Electronegativities: Ca (1.0), Fe (1.8), Mg (1.2), O (3.5), S (2.5), Zn (1.6) Group of answer choices ZnO MgS CaO FeSarrow_forwardIn the Born-Haber cycle for KCl crystal formation, what enthalpy component must be divided by two? Group of answer choices KCl(s) enthalpy of formation Ionization energy for K(g) K(s) sublimation enthalpy Cl2 bond dissociation enthalpyarrow_forward2. Specify the solvent and reagent(s) required to carry out each of the following FGI. If two reagent sets must be used for the FGI, specify the solvent and reagent(s) for each reagent set. If a reaction cannot be carried out with reagents (sets) class, write NP (not possible) in the solvent box for reagent set #1. Use the letter abbreviation for each solvent; use a number abbreviation for reagent(s). Solvents: CH2Cl2 (A); H₂O (B); Reagents: HBr (1); R₂BH (6); H2SO4 (2); CH3OH (C); Br₂ (3); CH3CO₂H (D) NaHCO3 (4); Hg(OAc)2 (5); H₂O₂ / HO (7); NaBH4 (8) Reagent Set #1 Reagent Set #2 FGI хот Br Solvent Reagent(s) Solvent Reagent(s)arrow_forward
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