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REY [17]
3 years ago
7

Now consider the quantum theory of conduction. At low temperatures, with scattering by lattice vibrations (phonons) not yet impo

rtant,  ~ T. The residual resistivity, 0, as T -> 0 (the text calls this “I ”) is dependent on scattering by defects (impurities, . . .). If the lattice is ‘perfectly ordered’, then  can approach infinity (or at least the size of the metal.) The residual resistivity is a measure of the purity of the sample. A relatively good sample of Cu has 0=2 10-11m.a.) If the Fermi velocity, uF, of Cu is 1.57 106 m/s, and =2 10-11m, according to eq. 10-25 what is the mean free path  in units of m? (Assume Cu is monovalent, i. e. each atom contributes 1 electron to the conduction.) (show how the units come out to give units of length in the end.)
Chemistry
1 answer:
nydimaria [60]3 years ago
4 0

Answer:

jhjhh

Explanation:

jhhjhjh

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HCI + NaOH --> NaCl + H 20
Vikki [24]

Answer:

option D is correct

Explanation:

no of moles in 3 grams of HCL=3/36=0.08

if 1 mole of HCL require 1 mole of NaOH then 0.08 moles required 0.08 moles of NaOH

mass of 0.08 moles of NaOH=moles*molar mass=0.08*40=3.2 grams

so 3 grams are required in the reaction

6 0
2 years ago
Classify these definitions as that of an Arrhenius acid, an Arrhenius base, or other. Arrhenius acid definition Arrhenius base d
stealth61 [152]

Answer:

Explanation:

A substance that produces an excess of hydroxide ion (-OH) in aqueous solution.

       This is an arrhenius Base

According to the arrhenius theory, a base is a substance that combines with water to produce excess hydroxide ions, OH⁻ in an aqeous solution. Examples are :

  • Sodium hydroxide NaOH
  • Potassium hydroxide KOH

A substance that produces an excess of hydrogen ion (H+) in aqueous solution

      This is an arrhenius Acid

An arrhenius acid is a substance that reacts with water to produce excess hydrogen ions in aqueous solutions.

Examples are;

  • Hydrochloric acid HCl
  • Hydroiodic acid HI
  • Hydrobromic acid HBr
5 0
3 years ago
What are the uses of crude oil?
vampirchik [111]

Answer:

they are use to make  tar, asphalt, paraffin wax, and lubricating oils.

Explanation:

7 0
3 years ago
1: A man standing on the South Pole of the Earth drops a ball. Mike thinks that the ball will move away from the Earth and Maria
m_a_m_a [10]

Answer:

Maria

Explanation:

The gravity of the earth is so strong it causes the magnetic pull of anything and everything, this causing the ball to be dropped and pulled towards earth

5 0
2 years ago
If chromium(II) iodide is dissolved in water you can say that the equilibrium concentrations of chromium(II) and iodide ions are
jenyasd209 [6]

Answer:

See explanation.

Explanation:

Hello there!

In this case, according to the given information, it turns out firstly necessary for us to set up the equilibrium reaction by which chromium (II) iodide is ionized as follows:

CrI_2(s)\rightarrow Cr^{2+}(aq)+2I^-(aq)

Thus, it is possible to notice that the the moles, and therefore concentrations, of chromium(II) and iodide ions are going to be different, by a factor of 2 due to the mole ratio in the aforementioned chemical equation.

Regards!

7 0
3 years ago
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