Question
In: Chemistry
Two structures of alanine can be drawn that have a net charge of zero, but the...
Two structures of alanine can be drawn that have a net charge of zero, but the predominant form of alanine at its pI is zwitterionic. Why is alanine predominantly zwitterionic rather than completely uncharged at its pI? What percent (to one significant figure) of alanine molecules would be in the completely uncharged form at the pI? Hint: pK1 of alanine is 2.35 and pK2 is 9.87.
Solutions
queen_honey_blossom answered 3 hours agoRelated Solutions
Two structures of alanine can be drawn that have a net charge of zero, but the...
Two structures of alanine can be drawn that have a net charge of
zero, but the predominant form of alanine at its pI is
zwitterionic. Why is alanine predominantly zwitterionic rather than
completely uncharged at its pI? What percent (to one significant
figure) of alanine molecules would be in the completely uncharged
form at the pI? Hint: pK1 of alanine is 2.35 and pK2 is 9.87.
Part A: Zwitterionic Form Two structures of alanine can be drawn that have a net charge...
Part A: Zwitterionic Form
Two structures of alanine can be drawn that have a net charge of
zero, but the predominant form of alanine at its pI is
zwitterionic. Why is alanine predominantly zwitterionic rather than
completely uncharged at its pI? What percent (to one significant
figure) of alanine molecules would be in the completely uncharged
form at the pI? Hint: pK1 of alanine is 2.35
and pK2 is 9.87.
(answer is NOT .24%)
Part B: Hardy-Weinberg
The following question...
A metal sphere contains zero net charge. a. Explain why it is incorrect to say that...
A metal sphere contains zero net charge.
a. Explain why it is incorrect to say that the ball has no
charge.
b. Is it possible for the ball to have a positive (or negative)
charge on one side yet still have zero net charge? If so, describe
how this could be done.
At which pH would the net electric charge of tyrosine be zero, given that its -COOH...
At which pH would the net electric charge of tyrosine be zero,
given that its -COOH group has a pKa of 2.20, its –NH3+ group has a
pKa of 9.11, and its R group has a pKa of 10.07?
What does it mean when two (or more) compounds have a net zero energy of mixing?
What does it mean when two (or more) compounds have a net zero
energy of mixing?
a). A net charge of 10C is available and can be distributed in each case in...
a). A net charge of 10C is available and can be distributed in
each case in
• a line describing a quarter circle of radius 10cm, • The surface
of a sphere of radius .5 m
• A 5cm side bucket.
Calculate in each case the linear, surface and volumetric charge
density.
In each case, in what length, area and volume is 1/4 content of the
total charge?
b). A sphere of radius R has a volumetric charge density ρ...
1. True or False: A polarized material must have a nonzero net electric charge. 2. Two...
1. True or False: A polarized material must have a nonzero net
electric charge.
2. Two identical conducting spheres are charged with a net
charge of +5.0?+5.0q on the first sphere and a net charge of
−8.0?−8.0q on the second sphere. The spheres are brought together,
allowed to touch, and then separated. What is the net charge on
each sphere now?
a−3.0?
b−1.5?
c+1.5?
d+3.0?
3. A solid cube carries a charge of +8?+8e. You measure the
charge on each...
Resonance structures are Lewis structures drawn for a molecule when more than one Lewis structure is...
Resonance structures are Lewis structures drawn for a molecule
when more than one Lewis structure is needed to explain the
molecular structure. Resonance results in extended
__________?
of some electrons among more than two nuclei of the molecule.
This results in lowering of kinetic and potential energies that
imparts added stability to the molecule.
Note. In covalent bond formation the bonding electrons are
delocalized between only two atoms. Resonance is taking the
delocalization of electrons between nuclei to the next...
What is the net force exerted by these two charges on a third charge q3 =...
What is the net force exerted by these two charges on a third
charge q3 = 46.5 nC placed between q1 and q2 at x3 = -1.205 m ?
Your answer may be positive or negative, depending on the
direction of the force.
Express your answer numerically in newtons to three significant
figures.
Consider two point charges located on the x axis: one
charge, q1 = -10.0 nC , is located at x1 = -1.730 m ;the second
charge, q2...
Write two resonance structures of C3H3− ion. Mention the formal charge of each atom. A covalent...
Write two resonance structures of
C3H3− ion. Mention the
formal charge of each atom.
A covalent bond has 3.15% ionic character. If the experimental
value of the dipole moment were found to be 0.22 D, what would be
the length of the covalent bond in picometer?
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