Chemistry: Principles and Reactions
8th Edition
ISBN: 9781305079373
Author: William L. Masterton, Cecile N. Hurley
Publisher: Cengage Learning
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Textbook Question
Chapter 2, Problem 16QAP
See the definition for isobars in Question 15. Consider Cr-54, Fe-54, Fess, and Ni-S8.
(a) Which of these are isobars? Which are isotopes?
(b) What do Fe-S4 and Fe-58 have in common?
(c) Which atoms have the same number of neutrons?
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AA
田
General A G
fx Alexis Cozort
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⚫ 61%
A
B
D
E
F
H
K
M
N
P
R
S
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10
125 mM that yielded peak heights of Aa =
9 1-(a)A sample solution was examined under XRF to quantify the analyte Ce³+. Find the response factor F, when standardized concentration of analyte [Ce³+]A =
concentration of internal standard S i.e. [In³*]s =
151
mM was spiked with standardized
1600 and As = 3015
respectively?
11
12
(i)Define F,
F =
Aa
As
[A]
[S]
+
X
13
(*Define with variables)
4000
14
15
(ii)Calculate F,
F =
numeral
(You will use the F value in part 1-(b) below)
As
16
(*Calculate with numerals)
17
18
1-(b)To determine the unknown conc of analyte [Ce³+], a volume of 15 mL of internal standard S having a concentration [In³+]s =
0.264
M
19
20
was added to 45 mL of unknown, and the mixture was diluted to 100 mL in a volumetric flask. XRF analysis yielded a spectrum, Figure-1, where peak
heights A and As are…
All structural types of Boron hydrides exhibit B-B, B-H-B and B-H bonds. Correct?
N-nitrosodimethylamine (NDMA) is a suspected carcinogen that can form via reactions
between dimethylamine (DMA) and monochloramine (NH2Cl). The relevant elementary
reactions and the corresponding rate constants are as shown below.
Reaction
Rate constant (M¹s¹)
DMA + NH2Cl = DMCA + NH3
k =1.4×10-1, kr = 5.83×10-3
1.28×10-3
DMA + NH2Cl → UDMH
UDMH + NH2Cl → NDMA
->
1.11×10-1
If the initial concentrations of DMA and NH2Cl are given, you should be able to predict the
concentrations of all species at any given reaction time. Please write down the rate equations
for DMA, NH2C1, DMCA, UDMH and NDMA.
Chapter 2 Solutions
Chemistry: Principles and Reactions
Ch. 2 - Atomic Theory and Laws State in your own words the...Ch. 2 - State in your own words the law of constant...Ch. 2 - Two basic laws of chemistry are the law of...Ch. 2 - Two basic laws of chemistry are the law of...Ch. 2 - Who discovered the electron? Describe the...Ch. 2 - Who discovered the nucleus? Describe the...Ch. 2 - Selenium is widely sold as a dietary supplement....Ch. 2 - Radon is a radioactive gas that can cause lung...Ch. 2 - How do the isotopes of argon, Ar-36, Ar-38, and...Ch. 2 - Consider two isotopes Fe-54 and Fe-56. (a) Write...
Ch. 2 - Uranium-235 is the isotope of uranium commonly...Ch. 2 - An isotope of americium (Am) with 146 neutrons is...Ch. 2 - Prob. 13QAPCh. 2 - Prob. 14QAPCh. 2 - Prob. 15QAPCh. 2 - See the definition for isobars in Question 15....Ch. 2 - Calculate the mass ratio of a bromine atom to an...Ch. 2 - Arrange the following in the order of increasing...Ch. 2 - Cerium is the most abundant rare earth metal. Pure...Ch. 2 - Consider the three stable isotopes of oxygen with...Ch. 2 - Bromine has two occuring isotopes: 79Br with...Ch. 2 - Rubidium has two naturally occurring isotopes:...Ch. 2 - Strontium has four isotopes with the following...Ch. 2 - Neon is an inert gas with three stable isotopes....Ch. 2 - Naturally occurring silver (Ag) consists of two...Ch. 2 - Copper has two naturally occurring isotopes. Cu-63...Ch. 2 - Silicon (averageatomicmass=28.0855amu) has three...Ch. 2 - Magnesium (averageatomicmass=24.305amu) consists...Ch. 2 - Zinc has four stable isotopes: Zn-64, Zn-66,...Ch. 2 - Chlorine has two isotopes, Cl-35 and Cl-37. Their...Ch. 2 - Lead is a heavy metal that remains in the...Ch. 2 - Silversmiths are warned to limit their exposure to...Ch. 2 - Determine (a) the number of atoms in 0.185 g of...Ch. 2 - For bismuth (Bi), determine (a) the number of...Ch. 2 - The isotope Si-28 has a mass of 27.977 amu. For...Ch. 2 - Myocardial perfusion imaging (MPI) is the latest...Ch. 2 - A cube of sodium has length 1.25 in. How many...Ch. 2 - A cylindrical piece of pure copper (d=8.92g/cm2)...Ch. 2 - Give the symbols for (a) potassium (b) cadmium (c)...Ch. 2 - Prob. 40QAPCh. 2 - Prob. 41QAPCh. 2 - Prob. 42QAPCh. 2 - How many metals are in the following groups? (a)...Ch. 2 - How many nonmetals are in the following periods?...Ch. 2 - Which group in the periodic table (a) has one...Ch. 2 - Which period of the periodic table (a) has no...Ch. 2 - Prob. 47QAPCh. 2 - Prob. 48QAPCh. 2 - Prob. 49QAPCh. 2 - Prob. 50QAPCh. 2 - Prob. 51QAPCh. 2 - Complete the table given below.Ch. 2 - Classify the following compounds as electrolytes...Ch. 2 - Prob. 54QAPCh. 2 - Prob. 55QAPCh. 2 - Prob. 56QAPCh. 2 - Prob. 57QAPCh. 2 - Write the names of the following molecules. (a)...Ch. 2 - Prob. 59QAPCh. 2 - Prob. 60QAPCh. 2 - Prob. 61QAPCh. 2 - Prob. 62QAPCh. 2 - Prob. 63QAPCh. 2 - Prob. 64QAPCh. 2 - Write the names of the following ionic compounds....Ch. 2 - Prob. 66QAPCh. 2 - Complete the following table.Ch. 2 - Complete the following table.Ch. 2 - Prob. 69QAPCh. 2 - Prob. 70QAPCh. 2 - Prob. 71QAPCh. 2 - Prob. 72QAPCh. 2 - Criticize each of the following statements: (a)...Ch. 2 - Which of the following statements is/are always...Ch. 2 - Some brands of salami contain 0.090% sodium...Ch. 2 - Carbon tetrachloride, CCl4, was a popular...Ch. 2 - Prob. 77QAPCh. 2 - Prob. 78QAPCh. 2 - Prob. 79QAPCh. 2 - Use the law of conservation of mass to determine...Ch. 2 - Prob. 81QAPCh. 2 - Prob. 82QAPCh. 2 - Scientists are trying to synthesize elements with...Ch. 2 - Write the nuclear symbol for the element whose...Ch. 2 - Prob. 85QAPCh. 2 - Write the atomic symbol for the element whose ion...Ch. 2 - Prob. 87QAPCh. 2 - Three compounds containing only carbon and...Ch. 2 - Ethane and ethylene are two gases containing only...Ch. 2 - Calculate the average density of a single Al-27...Ch. 2 - Prob. 91QAPCh. 2 - Each time you inhale, you take in about 500 mL...Ch. 2 - Hydrogen gas is prepared in a lab experiment. In...
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