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lawyer [7]
3 years ago
5

A rectangular corral of widths Lx = L and Ly = 2L contains seven electrons. What is the energy of (a) the first excited state, (

b) the second excited state, and (c) the third excited state of the system? Assume that the electrons do not interact with one another, and do not neglect spin. State your answers in terms of the given variables, using h and me (electron mass) when needed.

Chemistry
1 answer:
DiKsa [7]3 years ago
3 0

Answer:

See explaination

Explanation:

The invariant mass of an electron is approximately9. 109×10−31 kilograms, or5. 489×10−4 atomic mass units. On the basis of Einstein's principle of mass–energy equivalence, this mass corresponds to a rest energy of 0.511 MeV.

Check attachment for further solution to the exercise.

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5. Which particles in an atom are in the nucleus? protonsa​
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Answer:

Atomic Particles

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8 0
3 years ago
What typefs) of bonding would be expected for each of the following materials: solid xenon, calcium fluoride (CaF, bronze, cadmi
klio [65]

Answer:

a) Solid Xenon - only van der waals  forces of attractions.

b) Calcium Fluoride - Ionic Bonding

c) Bronze - Metallic Bonding

d) Cadmium telluride - Covalent bonding with slight ionic character.

e) Rubber - Covalent bonding with some van der Waals forces of attraction.

f) Tungsten - Metallic bonding

Explanation:

a) Xenon is  a noble gas having fully filled stable electronic configuration.

So, there is no bonding between xenon atoms in solid xenon.

Only van der waals forces of attraction are found.

b) Calcium fluoride is an ionic compound formed from calcium (2+) and Fluoride ion.

c) Bronze is an alloy formed mainly from copper and tin which are both metals.

So, metallic bonding is  in found in bronze.

d) Cadmium telluride is formed form cadimium (2+) ion and Telluride ion with -2 charge.

So, it has slight ionic character with predominant covalent bonding

e) Rubber is a polymer which is formed from isoprene units.

So, covalent bonding exists along with van der waals forces.

f) Tungsten is a metal. So, metallic bonding is found between the atoms of tungsten.

8 0
3 years ago
A sample consisting of n mol of an ideal gas undergoes a reversible isobaric expansion from volume Vi to volume 3Vi. Find the ch
kolezko [41]

Answer:

The change in entropy of gas is \Delta S= nC_{P}ln3

Explanation:

n= Number of moles of gas

Change in entropy of gas = ds= \int \frac{dQ}{T}

dQ= nC_{p}dT

From the given,

V_{i}=V

V_{f}=3V

Let "T" be the initial temperature.

\frac {V_{i}}{T_{i}}=\frac {V_{f}}{T_{f}}

\frac {V}{T}=\frac {3V}{T_{f}}

{T_{f}} = 3T

\int ds = \int ^{T_{f}}_{T_{i}} \frac{nC_{P}dT}{T}

\Delta S = nC_{p}ln(\frac{T_{f}}{T_{i}})

\Delta S = nC_{p}ln3

Therefore, The change in entropy of gas is \Delta S= nC_{P}ln3

3 0
3 years ago
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