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4 years ago

What are the systematic names for each of the structures alkanes

Chemistry

1 answer:

marta [7]4 years ago

7 0

Answer:

Name Molecular Formula Structural Formula

ethane C2H6 CH3CH3

propane C3H8 CH3CH2CH3

butane C4H10 CH3CH2CH2CH3

pentane C5H12 CH3(CH2)3CH

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Complete the table below by filling in the principal quantum number n and angular momentum quantum number l for each electron su

Alja [10]

Answer:

For 4f the principal quantum number, n is 4 and the angular momentum quantum number l is 3

7s: n = 7 and l = 0

4p: n = 4 and l = 1

7p: n = 7 and l = 1

Explanation:

The principal quantum number gives the energy level of the electron in an atom. It shows the shells in which an electron is in an atom.

if n = 1, 2, 3, 4...; it corresponds to K, L, M, N... shells in an atom

The numerical coefficient of the subshell gives the pricipal quantum number.

for instance in 4f, the principal quantum number, n is 4 because 4 is the coefficient.

The angular momentum quantum number, l gives the energy sublevel or subshell.

Angular momentum quantum number has integral values, l = 0, 1, 2, 3... which correspond to s, p, d, f,.. orbitals.

Thus for 4f the principal quantum number, n is 4 and the angular momentum quantum number l is 3

similarly, for 7s: n = 7 and l = 0

4p: n = 4 and l = 1

7p: n = 7 and l = 0

using similar approach for others

3 0

3 years ago

A solution of methanol and water has a mole fraction of water of 0.312 and a total vapor pressure of 211 torr at 39.9 ºC. The va

r-ruslan [8.4K]

Answer:

The solution is not ideal.

The relative strengths of the solute-solvent interactions are greater compared to the solute-solute and solvent-solvent interactions

Explanation:

The total vapor pressure is the sum of the partial pressures of water and methanol, and they are calculated by the Raoult´s law equation:

Pₐ = Xₐ Pºₐ, where Pₐ is the partial pressure of component A

Xₐ is the molar fraction of A

P⁰ₐ is the pressure of pure A

So lets calculate the partial pressures of methanol and water and compare them with the given total vapor pressure of solution:

X H2O = 0.312 ⇒ X CH3OH = 1 - 0.312 = 0.688

PH2O = 0.312 x 55.3 torr = 17.3 torr

PCH3OH = 0.688 x 256 torr = 176.1 torr

Ptotal = PH2O + PCH3OH = 17.3 torr + 176.1 torr = 193.4 torr

This pressure is less than the experimental value of 211 torr. So the solution is not ideal. The relative strength of the solute-solvent interactions are greater than the solute-solute and solvent-solvent interactions.

The reason for this is the presence of hydrogen bonding between methanol and water.

6 0

3 years ago

What is valency pls i need it now

Tanzania [10]

Valency is the number of electrons present in the outermost shell.

5 0

3 years ago

Read 2 more answers

The closest star to our Sun is Proxima

vichka [17]

Answer:

Distance in kilometre = 4.242 x 10¹² km

Explanation:

Given:

Distance of Proxima Centauri = 4.242 light years

Find:

Distance in kilometre

Computation:

1 light year = 10,000,000,000,000 km

So,

4.242 light years = 4.242 x 10,000,000,000,000

Distance in kilometre = 4.242 x 10¹² km

6 0

3 years ago

Sulfonation of naphthalene, C10H8, results in two products. One product is kinetically favored and predominates in the beginning

Marrrta [24]

Explanation:

The sulfonation of the naphthalene yield 2 products under different conditions:

<u>When the reaction is carried at 80 °C, 1-naphthalenesulfonic acid is the major product because it is kinetically favoured product as arenium ion formed in the transition state corresponding to 1-naphthalenesulfonic acid is more stable due to better resonance stabilization. </u>

<u>When the reaction is carried at 160 °C, 2-naphthalenesulfonic acid is the major product as it is more stable than 1-naphthalenesulfonic acid because of steric interaction of the sulfonic acid group in 1-position and the hydrogen in 8-position.</u>

The products are shown in image below.

7 0

4 years ago