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3 years ago

What does the salinity of seawater represent?

Chemistry

1 answer:

Temka [501]3 years ago

4 0

Answer:

Salinity is a measure of the 'saltiness' of seawater, or more precisely the amount of dissolved matter within seawater.

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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:

<u><em> orbitals </em></u>

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

4 years ago

How many points should be plotted when creating a scatterplot from the table of values below?

Fed [463]

Answer:

I think the correct answer would be 6.

Hope that was helpful.Thank you!!!:)

8 0

4 years ago

In the Haber reaction, patented by German chemist Fritz Haber in 1908, dinitrogen gas combines with dihydrogen gas to produce ga

VashaNatasha [74]

The question is incomplete, complete question is :

In the Haber reaction, patented by German chemist Fritz Haber in 1908, dinitrogen gas combines with dihydrogen gas to produce gaseous ammonia. This reaction is now the first step taken to make most of the world's fertilizer. Suppose a chemical engineer studying a new catalyst for the Haber reaction finds that 348 liters per second of dinitrogen are consumed when the reaction is run at 205°C and 0.72 atm. Calculate the rate at which ammonia is being produced.

Answer:

The rate of production of ammonia is 217.08 grams per second.

Explanation:

$N_2+3H_2\rightarrow 2NH_3$

Volume of dinitrogen used in a second = 348 L

Temperature of the gas = T = 205°C = 205+273 K = 478 K

Pressure of the gas = P = 0.72 atm

Moles of dinitrogen = n

$n=\frac{PV}{RT}=\frac{0.72 atm\times 348 L}{0.0821 atm L/mol K\times 478 K}=6.385 mol$

According to reaction, 1 mole of dinitriogen gives 2 mole of ammonia.Then 6.385 moles of dinitrogen will give:

$\frac{2}{1}\times 6.385 mol=12.769 mol$

Mass of 12.769 moles of ammonia;

12.769 mol 17 g/mol = 217.08 g

217.08 grams of ammonia is produced per second.So, the rate of production of ammonia is 217.08 grams per second.

6 0

4 years ago

In examining a protein molecule, you discover that it has not file fed properly. Why is this alarming?

kicyunya [14]

Answer: This may result in the protein forming bonds with additional amino acids, this may result in the protein forming bonds with lipids instead of other proteins

Explanation:..

3 0

3 years ago

Which describes a relationship when calculating the energy of a photon? The energy of the photon is directly proportional to fre

hjlf

Answer:

The photon is directly proportional to frquency

Explanation:

E=hf

where E is energy

h is plancks constant and

f is frequency

4 0

3 years ago