CHEMISTRY
2nd Edition
ISBN: 9781593995782
Author: OpenStax
Publisher: XANEDU PUBLISHING
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Chapter 12, Problem 44E
Both technetium-99 and thallium-201 are used to image heart muscle in patients with suspected heart problems. The half-lives are 6 h and 73 h, respectively. What percent of the radioactivity would remain for each of the isotopes after 2 days (48 h)?
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Modify the given carbon skeleton to draw the major product of the following reaction. If a racemic mixture of enantiomers is
expected, draw both enantiomers. Note: you can select a structure and use Copy and Paste to save drawing time.
HBr
کی
CH3
کی
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Sort the following into the classification for a reaction that is NOT at equilibrium versus a reaction system that has reached equilibrium.
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The forward and reverse reactions
proceed at the same rate.
Chemical equilibrium is a dynamic
state.
The ratio of products to reactants is
not stable.
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The state of chemical equilibrium will
remain the same unless reactants or
products escape or are introduced into
the system. This will disturb the
equilibrium.
The concentration of products is
increasing, and the concentration of
reactants is decreasing.
The ratio of products to reactants
does not change.
The rate at which products form from
reactants is equal to the rate at which
reactants form from products.
The concentrations of reactants and
products are stable and cease to
change.
The reaction has reached equilibrium.
The rate of the forward reaction is
greater than the rate of the reverse
reaction.
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This anion could form a neutral
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This ion forms ionic bonds with
nonmetals.
This ion has a 1- charge.
This is a polyatomic ion.
The neutral atom from which this ion
is formed is a metal.
The atom from which this ion is
formed gains an electron to become
an ion.
The atom from which this ion is
formed loses an electron to become
an ion.
This ion has a total of 18 electrons.
This ion has a total of 36 electrons.
This ion has covalent bonds and a net
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This ion has a 1+ charge.
Potassium ion
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Chapter 12 Solutions
CHEMISTRY
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