four ions (na, cl, na, and cl) in a row each separated from their nearest neighbor...
four ions (na, cl, na, and cl) in a row each separated from their nearest neighbor by 2.0x10^-10m. The charge of a sodium ion is +e and that of a chlorine ion is -e. determine the electric force exerted on the chlorine ion at the right end of the row due to the other three ions.
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four ions (na, cl, na, and cl) in a row each separated from
their nearest neighbor...
Q 6: Four ions (Na+Na+, Cl−Cl−, Na+Na+, and Cl−Cl−) in a row are each separated from...
Q 6: Four ions (Na+Na+, Cl−Cl−, Na+Na+, and Cl−Cl−) in a row are each separated from their nearest neighbor by 4.5×10−10 mm . The charge of a sodium ion is +e+e and that of a chlorine ion is −e−e. Determine the electric force exerted on the chlorine ion at the right end of the row due to the other three ions. (+x+x to the right) Express your answer with the appropriate units.
1) HCl consists of one H and Cl atom separated by 0.127 nm, the bond length....
1)
HCl consists of one H and Cl atom separated by 0.127 nm, the
bond length. The Cl atom has a partial charge of -0.177e and the H
atom has a partial charge of +0.177e, where e = 1.602x10-19 C is
the electron charge.
What is the dipole moment of the molecule?
2)
Now the HCl molecule is placed near a sodium ion
Na+with charge +1e. As shown in the figure, the distance
between the Cl and Na atoms is...
The structure of a sodium chloride (table salt) crystal is shown in the figure below. Each...
The structure of a sodium chloride (table salt) crystal is shown
in the figure below. Each sodium ion Na+ has a charge +e
and is adjacent to a chloride ion Cl−, which has a
charge −e. The electric force of attraction between sodium ions and
chlorine ions holds the crystal together.
Suppose you attempt to break a cubic salt crystal, 1.26 mm on a
side, by applying forces F and −F
perpendicular to opposite sides of the cube, trying to...
In crystals of the salt cesium chloride, cesium ions Cs+ form the eight corners of a...
In crystals of the salt cesium
chloride, cesium ions Cs+ form the eight corners of a cube and a
chlorine ion Cl- is at the cube's center (see the figure). The edge
length of the cube is L = 0.40 nm. The Cs+ ions are each deficient
by one electron (and thus each has a charge of +e), and the Cl- ion
has one excess electron (and thus has a charge of -e). (a) What is
the magnitude of the...
Write the chemical formula for each compound described. calcium chloride (1 Ca ion, 2 Cl ions): sodium sulfide (2 Na io...
Write the chemical formula for each compound described. calcium chloride (1 Ca ion, 2 Cl ions): sodium sulfide (2 Na ions, 1 S ion):
Search ll ? 1:04 PM phystwohwfive.pdf 2 of 2 (e) At a certain location, the electric...
Search ll ? 1:04 PM phystwohwfive.pdf 2 of 2 (e) At a certain location, the electric field due to the excess charge on the Earth's surface points downward. What is the sign of the charge on the Earth's surface at that location? Explain . The distance between beighboring singly charged sodium and chlorine ions in crystals of table salt (NaC) is 2.82 × 10-30m. What is the attractive force between the ions. The sodium ion has a net charge of...
Band structure Consider a one-dimensional semiconductor crystal consisting of 11 atoms with nearest- neighbor atoms separated...
Band structure Consider a one-dimensional semiconductor crystal consisting of 11 atoms with nearest- neighbor atoms separated by a 5 . The band structure for electrons in the conduction band is given by Ec(k) = 101(k-0.2n)2-A(k-02n)"] + 2.25 [eV] and the band structure for holes in the valence band is given by where the wavevector k s in units ofA-1. The allowed wavevectors are--< k 즈 al (a) Is this a direct or indirect gap semiconductor? What is the energy gap...
Q. 3. Potassium fluoride adopts the rock salt (NaCl type) structure, with a density of 2.48...
Q. 3. Potassium fluoride adopts the rock salt (NaCl type) structure, with a density of 2.48 g/cm3. Using the data for the Part 4 model you constructed, calculate the expected distance between the center of the potassium ion and the center of an adjacent fluoride ion in pm. Q. 4. The diameter of a Cs+ ion is 334 pm; the diameter of a Br- ion is 392 pm. For CsBr, which crystallizes in the CsCl type structure from Part 5,...
Question 3-10 points One of the most important functions of the membrane in living cells is...
Question 3-10 points One of the most important functions of the membrane in living cells is its ability to selectively pass either sodium ions (Na) or potassium ions (K) through channels in the membrane. These ions have the same charge +le). The electric force exerted on them by the membrane will be similar. In addition, they are about the same size (RNa~0.12 nm, RK 0.15 nm). So how can channels in the membrane distinguish between them? One mechanism that has...
Four point charges are arranged as shown below, each a distance d from the center of the configuration. The value of t...
Four point charges are arranged as shown below, each a distance d from the center of the configuration. The value of the constant q is positive. Let blue arrows represent electronic fields and red each charge, pick the picture that best represents the directions of both the electric field at the charge and the net force on the charge due to the other three charges.
1)
HCl consists of one H and Cl atom separated by 0.127 nm, the
bond length. The Cl atom has a partial charge of -0.177e and the H
atom has a partial charge of +0.177e, where e = 1.602x10-19 C is
the electron charge.
What is the dipole moment of the molecule?
2)
Now the HCl molecule is placed near a sodium ion
Na+with charge +1e. As shown in the figure, the distance
between the Cl and Na atoms is...
The structure of a sodium chloride (table salt) crystal is shown
in the figure below. Each sodium ion Na+ has a charge +e
and is adjacent to a chloride ion Cl−, which has a
charge −e. The electric force of attraction between sodium ions and
chlorine ions holds the crystal together.
Suppose you attempt to break a cubic salt crystal, 1.26 mm on a
side, by applying forces F and −F
perpendicular to opposite sides of the cube, trying to...
In crystals of the salt cesium
chloride, cesium ions Cs+ form the eight corners of a cube and a
chlorine ion Cl- is at the cube's center (see the figure). The edge
length of the cube is L = 0.40 nm. The Cs+ ions are each deficient
by one electron (and thus each has a charge of +e), and the Cl- ion
has one excess electron (and thus has a charge of -e). (a) What is
the magnitude of the...
Write the chemical formula for each compound described. calcium chloride (1 Ca ion, 2 Cl ions): sodium sulfide (2 Na ions, 1 S ion):
Search ll ? 1:04 PM phystwohwfive.pdf 2 of 2 (e) At a certain location, the electric field due to the excess charge on the Earth's surface points downward. What is the sign of the charge on the Earth's surface at that location? Explain . The distance between beighboring singly charged sodium and chlorine ions in crystals of table salt (NaC) is 2.82 × 10-30m. What is the attractive force between the ions. The sodium ion has a net charge of...
Band structure Consider a one-dimensional semiconductor crystal consisting of 11 atoms with nearest- neighbor atoms separated by a 5 . The band structure for electrons in the conduction band is given by Ec(k) = 101(k-0.2n)2-A(k-02n)"] + 2.25 [eV] and the band structure for holes in the valence band is given by where the wavevector k s in units ofA-1. The allowed wavevectors are--< k 즈 al (a) Is this a direct or indirect gap semiconductor? What is the energy gap...
Question 3-10 points One of the most important functions of the membrane in living cells is its ability to selectively pass either sodium ions (Na) or potassium ions (K) through channels in the membrane. These ions have the same charge +le). The electric force exerted on them by the membrane will be similar. In addition, they are about the same size (RNa~0.12 nm, RK 0.15 nm). So how can channels in the membrane distinguish between them? One mechanism that has...
Four point charges are arranged as shown below, each a distance d from the center of the configuration. The value of the constant q is positive. Let blue arrows represent electronic fields and red each charge, pick the picture that best represents the directions of both the electric field at the charge and the net force on the charge due to the other three charges.
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