Conceptual Integrated Science
3rd Edition
ISBN: 9780135197394
Author: Hewitt, Paul G., LYONS, Suzanne, (science Teacher), Suchocki, John, Yeh, Jennifer (jennifer Jean)
Publisher: PEARSON EDUCATION (COLLEGE)
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Textbook Question
Chapter 9, Problem 76TE
With scanning probe microscopy technology, we see images of actual atoms, but we do not see actual atoms. Explain.
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1. If the potential energy function is expressed as
a
U(r)
a) Show that the inter-molecular distance r, for which the potential energy is
1/6
2B
minimum is given by
a
b) Show that the inter-nuclear distance r for which the potential energy is zero is
given by r. × (2)-\/6.
a?
c) Show that the minimum potential energy is given by, Umin=--
4B
(d) The figure below shows the fluorescence intensity recorded for four porphyrin molecules (1-4),
which each undergo single exponential decay.
Fluorescence Decay
1.0
0.5
0.0
0
10
20
Time (ns)
30
1
2
3
A 4
O
40
(i) Using the data above and indicating the appropriate equations, estimate the lifetime of
fluorescence for each porphyrin and calculate the rate constant in each case.
(ii) Porphyrin fluorescence is quenched by molecular oxygen. If the diffusion coefficient (D) of
O₂ in water at 25 °C is 2.5 x 10-5 cm² s1 estimate the distance travelled by an oxygen
molecule during the lifetime of molecules 1 and 4 and comment on the relative likelihood of
quenching.
A cat strolls across your backyard. An hour later, a dog with his nose to the ground follows the trail of the cat. Explain this occurrence from a molecular point of view.
Chapter 9 Solutions
Conceptual Integrated Science
Ch. 9 - Prob. 1RCQCh. 9 - Prob. 2RCQCh. 9 - Prob. 3RCQCh. 9 - Prob. 4RCQCh. 9 - Prob. 5RCQCh. 9 - Prob. 6RCQCh. 9 - Prob. 7RCQCh. 9 - Prob. 8RCQCh. 9 - Prob. 9RCQCh. 9 - Prob. 10RCQ
Ch. 9 - Prob. 11RCQCh. 9 - Prob. 12RCQCh. 9 - Prob. 13RCQCh. 9 - Prob. 14RCQCh. 9 - Prob. 15RCQCh. 9 - Prob. 16RCQCh. 9 - Prob. 17RCQCh. 9 - Prob. 18RCQCh. 9 - Prob. 19RCQCh. 9 - Prob. 20RCQCh. 9 - Prob. 21RCQCh. 9 - Prob. 22TISCh. 9 - Prob. 23TISCh. 9 - Prob. 24TISCh. 9 - Prob. 25TISCh. 9 - If a baseball were the size of Earth, about how...Ch. 9 - Prob. 27TISCh. 9 - Prob. 28TISCh. 9 - What kind of model is best used to describe...Ch. 9 - Rank these three subatomic particles in order of...Ch. 9 - Prob. 35TCCh. 9 - Consider three 1-gram samples of the matter a...Ch. 9 - Prob. 37TCCh. 9 - Prob. 38TCCh. 9 - Prob. 39TCCh. 9 - Prob. 40TSCh. 9 - Prob. 41TSCh. 9 - Prob. 42TSCh. 9 - Chlorine atomic number 17 is composed of two...Ch. 9 - Prob. 44TECh. 9 - Prob. 45TECh. 9 - If all the molecules of a body remained part of...Ch. 9 - Prob. 47TECh. 9 - Prob. 48TECh. 9 - Where did the carbon atoms in Leslies hair...Ch. 9 - Prob. 50TECh. 9 - Prob. 51TECh. 9 - Prob. 52TECh. 9 - Prob. 53TECh. 9 - Prob. 54TECh. 9 - Why arent we harmed by drinking heavy water:D2O?Ch. 9 - Prob. 56TECh. 9 - Prob. 57TECh. 9 - The nucleus of an electrically neutral iron atom...Ch. 9 - Prob. 59TECh. 9 - Prob. 60TECh. 9 - Why are the atomic masses that are not whole...Ch. 9 - Prob. 62TECh. 9 - Prob. 63TECh. 9 - Prob. 64TECh. 9 - Which is heavier: a water molecule, H2O, or a...Ch. 9 - When we breathe, we inhale oxygen, O2, and exhale...Ch. 9 - A tree takes in carbon dioxide, CO2, and water...Ch. 9 - Prob. 68TECh. 9 - Prob. 69TECh. 9 - Prob. 70TECh. 9 - Prob. 71TECh. 9 - Prob. 72TECh. 9 - Prob. 73TECh. 9 - Prob. 74TECh. 9 - How do we predict the behavior of atoms?Ch. 9 - With scanning probe microscopy technology, we see...Ch. 9 - Prob. 77TECh. 9 - What do the components of a conceptual model have...Ch. 9 - Would you use a physical model or a conceptual...Ch. 9 - Prob. 80TECh. 9 - How is it possible to tell what stars are made of...Ch. 9 - Prob. 82TECh. 9 - Prob. 83TECh. 9 - Prob. 84TECh. 9 - Prob. 85TECh. 9 - Prob. 86TECh. 9 - Prob. 87TECh. 9 - Prob. 88TECh. 9 - Prob. 89TECh. 9 - Prob. 90TECh. 9 - Prob. 91TECh. 9 - Prob. 92TECh. 9 - Prob. 93TECh. 9 - Prob. 94TECh. 9 - Prob. 95TECh. 9 - Prob. 96TECh. 9 - Prob. 97TECh. 9 - Prob. 98TECh. 9 - Prob. 99TECh. 9 - In what sense can you truthfully say that you are...Ch. 9 - Prob. 101TDICh. 9 - Prob. 102TDICh. 9 - Why does an inflated and securely tied rubber...Ch. 9 - Prob. 1RATCh. 9 - Prob. 2RATCh. 9 - Prob. 3RATCh. 9 - Prob. 4RATCh. 9 - Prob. 5RATCh. 9 - Prob. 6RATCh. 9 - Prob. 7RATCh. 9 - Would you use a physical model or a conceptual...Ch. 9 - Prob. 9RATCh. 9 - Prob. 10RAT
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