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leonid [27]
3 years ago
10

For each value of the principal quantum number n, what are the possible values of the electron spin quantum number?

Chemistry
1 answer:
Ede4ka [16]3 years ago
7 0

Answer:

The values for spin quantum number +1/2 and - 1/2

Explanation:

Principal quantum number denoted by (n) is used to describe the shell or orbits that electrons are found. Principal quantum number can assume a value of n= 1,2, 3, 4,5............ which indicates K, L, M, N, O shell respectively.

To know the maximum number of electrons in each shell, the formula (2n²) can be used. The letter 'n' denotes the values of principal quantum number 1,2,3,4

For example

  • n=1 (K shell) has maximum number of 2 electrons
  • n=2 (L shell) has the maximum number of 8 electrons
  • n=3 (M shell) has the maximum number of 18 electrons
  • n=4 (N shell) has the maximum number of 32 electrons

All the electron in each shell will have a spin quantum number of +1/2 and - 1/2. One electron in each degenerate orbital will spin up (+1/2) while the other electron will spin down (-1/2).

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For a particular reaction at 235.8 °C, ΔG=−936.92 kJ/mol , and ΔS=513.79 J/(mol⋅K) . Calculate ΔG for this reaction at −9.9 °C.
Rudik [331]

Answer:

-138.9 kJ/mol

Explanation:

Step 1: Convert 235.8°C to the Kelvin scale

We will use the following expression.

K = °C + 273.15 = 235.8°C + 273.15 = 509.0 K

Step 2: Calculate the standard enthalpy of reaction (ΔH°)

We will use the following expression.

ΔG° = ΔH° - T.ΔS°

ΔH° = ΔG° / T.ΔS°

ΔH° = (-936.92kJ/mol) / 509.0K × 0.51379 kJ/mol.K

ΔH° = -3.583 kJ (for 1 mole of balanced reaction)

Step 3: Convert -9.9°C to the Kelvin scale

K = °C + 273.15 = -9.9°C + 273.15 = 263.3 K

Step 4: Calculate ΔG° at 263.3 K

ΔG° = ΔH° - T.ΔS°

ΔG° = -3.583 kJ/mol - 263.3 K × 0.51379 kJ/mol.K

ΔG° = -138.9 kJ/mol

8 0
2 years ago
Gas hydrates are compact chemical structures made of natural gas and
Oksana_A [137]

Answer:


                  Option-B (water) is the correct answer.


Explanation:

                 Gas hydrates are made up of Solid-Ice water and a natural gas like Methane gas trapped in the lattice of ice water. Gas hydrates are mainly found deep down in the sea where the atmospheric pressure is greater than 1 atm.


Generally Gas hydrates have two main applications. 

                             a) It stabilizes the sea floor other wise its melting will cause land sliding in sea floor. 

                             b) Secondly, it traps a green house gases like Methane, if released these gases could produce Climate changes.

6 0
2 years ago
Read 2 more answers
In each following pairs, state which one is more likely to give up electrons?
Y_Kistochka [10]
Human hair. Human hair as energy because it is living so, it is most likely to give up electrons. 
8 0
3 years ago
Assume prices increase from $15 to $18, yet quantity remains at 25. What is the total revenue?
UNO [17]

Given:

Number of items = 25

Price per item = $18

<u>To determine:</u>

The total revenue

<u>Explanation:</u>

Total revenue = quantity * price per item

                       = 25 items * 18 dollar/ 1 item = $450

Ans: A) The total revenue is $450

4 0
3 years ago
Which one of the next salts is the most soluble in water, if: Ksp (BaCO3) = 5.1 • 10-9 mol2 / l2; Ksp (CaCO3) = 4.8 • 10-9 mol2
lubasha [3.4K]

Answer:

Explanation:

Ksp (BaCO₃) = 5.1 x  10⁻⁹

Ksp (CaCO₃) = 4.8 x  10⁻⁹

Ksp (BaSO₄) = 1.1 x  10⁻¹⁰ = .11 x 10⁻⁹

Since solubility product of BaCO₃ is  greatest , its solubility is maximum .It is to be noted that all of them will be giving only two number of ions after dissolution in water .

BaCO₃ = Ba⁺ + CO₃⁻

Ksp = [ Ba⁺²] [ CO₃⁻² ]

= [ Ba⁺²]²

[ Ba⁺²] = √ Ksp

similarly we can find equations for others .

8 0
2 years ago
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