Chemistry, 20.10.2019 09:30 millernicholas622
Now consider the quantum theory of conduction. at low temperatures, with scattering by lattice vibrations (phonons) not yet important, ~ 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 10-11m. a.) if the fermi velocity, uf, of cu is 1.57 106 m/s, and =2 10-11m, 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.)
Answers: 2
Chemistry, 22.06.2019 10:00
The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) ⇌ co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) → co2(g) k=1.363×10^69 b. 2 h2(g) + o2(g) → 2 h2o(g) k=1.389×10^80 c. 2co(g) + o2 (g) → 2 co2(g) k=1.477×10^90
Answers: 1
Chemistry, 22.06.2019 15:30
Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins.co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)
Answers: 1
Chemistry, 23.06.2019 01:00
Which statement best describes isomers? a. isomers are alcohols that have the same functional group. b. isomers have at least one carbon-carbon double bond. c. isomers have the same molecular formula but different structural properties.
Answers: 1
Chemistry, 23.06.2019 06:20
What is the magnitude of the force of gravity between to 1000 kg cars which are separated by distance of 25. 0 km on an interstate highway? the force between the two cars will be what
Answers: 3
Now consider the quantum theory of conduction. at low temperatures, with scattering by lattice vibra...
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