It would be expected that methanol (ch3oh) would be more soluble in water than methane (ch4) would be.

What type of molecule polarity exists in NH3, H2O, and HF ?

Jet001 [13]

NH3 and H2O and HF are all polar molecules

8 0

3 years ago

Write a short paragraph on the harms caused by microorganisms

lutik1710 [3]

Answer:

Some serious diseases like anthrax is also caused in animals by the microbes. Microbes also cause diseases of plants like blights in potatoes, sugarcanes, oranges etc. They also reduce the yield. Microbes grow on food products and render them unfit for consumption.

Explanation:

5 0

3 years ago

Explain the leaf properties of water

Mama L [17]

Answer:

Water's polarity and its ability to form hydrogen bonds give it special properties, including adhesion, cohesion, and the ability to moderate temperature.

5 0

3 years ago

Which of these electron transitions correspond to absorption of energy and which to emission?

Elan Coil [88]

Answer:

n = 5 to n = 6 absorption

n = 9 to n = 6 emission

n = 6 to n = 4 emission

n = 6 to n = 7 absorption

Explanation:

According to the Bohr's model of the atom. An electron in an atom may absorb energy and move from a lower energy level to a higher energy level. This requires absorption of energy that is equal to the energy difference between the two levels.

Similarly, an electron may move from a higher to a lower energy level, releasing energy that is equal to the energy difference between the higher and the lower level. This is known as emission.

Hence, if the electron is moving from a lower energy level to a higher energy level, an absorption has taken place, e.g n = 5 to n = 6

When an electron moves from a higher energy level to a lower energy level, an emission has taken place e.g n = 9 to n = 6

5 0

3 years ago

The maximum number of electrons that are possible at a given energy level depends on the number of ____ at the energy level.

VMariaS [17]

Answer:

 orbitals

Explanation:

Each orbital may contain a maximum of two electrons.

The energy level is the principal quantum number: 1, 2, 3, 4, 5, 6, 7.

The principal quantum number limits the kind of orbital (ℓ ) and the number of orbitals (mℓ ).

I. Principal quantum number, n = 1

Angular or orbital quantum number : ℓ = 0 ⇒ ortibal s

Magnetic quantum number: mℓ = 0

⇒ number of orbitals 1 ⇒ number of electrons: 2

II. Principal quantun number, n = 2

Angular or orbital quantum number : ℓ = 0 and 1 ⇒ ortibal s and p

Magnetic quantum number:

for ℓ: mℓ = 0: 1 s ortibal

for ℓ = 1: mℓ = -1, 0, and +1: 3 p ortitals

⇒ number of orbitals 4 ⇒ number of electrons: 8

III. Principal quantun number, n = 3

Angular or orbital quantum number : ℓ = 0, 1, and 2 ⇒ ortibal s, p and d

Magnetic quantum number:

for ℓ: mℓ = 0: 1 s ortibal

for ℓ = 1: mℓ = -1, 0, and +1: 3 p ortitals

for ℓ = 2: mℓ = -2, -1, 0, +1, and +2: 5 d ortitals

⇒ number of orbitals 9 ⇒ number of electrons: 18

IV. Principal quantun number, n = 4

Angular or orbital quantum number : ℓ = 0, 1, 2, and 3 ⇒ ortibal s, p, d and f

Magnetic quantum number:

for ℓ: mℓ = 0: 1 s ortibal

for ℓ = 1: mℓ = -1, 0, and +1: 3 p ortitals

for ℓ = 2: mℓ = -2, -1, 0, +1, and +2: 5 d ortitals

for ℓ = 3: mℓ = ±3, ±2, ±1, and 0: 7 f ortitals

⇒ number of orbitals 16 ⇒ number of electrons: 32.

Thus, you have:

energy level, n maximum number of maximum number of

orbitals electrons

1 1 2

2 4 8

3 9 18

4 16 32

Those numbers follow a rule: n² and 2n². You can verify that the previous numbers are in accordance with those formulas.

3 0

3 years ago