Chemistry
13th Edition
ISBN: 9781259911156
Author: Raymond Chang Dr., Jason Overby Professor
Publisher: McGraw-Hill Education
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Question
Chapter 22, Problem 22.54QP
Interpretation Introduction
Interpretation:
The molar mass and molecular formula of white phosphorus has to be calculated.
Concept introduction:
Molar mass: The mass of the one mole of substance is known as molar mass.
To calculate: The molar mass and molecular formula of white phosphorus
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The table includes macrostates characterized by 4 energy levels (&) that are
equally spaced but with different degrees of occupation.
a) Calculate the energy of all the macrostates (in joules). See if they all have
the same energy and number of particles.
b) Calculate the macrostate that is most likely to exist. For this macrostate,
show that the population of the levels is consistent with the Boltzmann
distribution.
macrostate 1 macrostate 2 macrostate 3
ε/k (K) Populations
Populations
Populations
300
5
3
4
200
7
9
8
100
15
17
16
0
33
31
32
DATO: k = 1,38×10-23 J K-1
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In an experiment, the viscosity of water was measured at different
temperatures and the table was constructed from the data obtained.
a) Calculate the activation energy of viscous flow (kJ/mol).
b) Calculate the viscosity at 30°C.
T/°C
0
20
40
60
80
η/cpoise 1,972 1,005 0,656 0,469 0,356
Chapter 22 Solutions
Chemistry
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