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2 years ago

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Chemistry

1 answer:

wlad13 [49]2 years ago

7 0

Answer:

Earth's atmosphere contains a huge pool of nitrogen gas (N2). But this nitrogen is “unavailable” to plants, because the gaseous form cannot be used directly by plants without undergoing a transformation. To be used by plants, the N2 must be transformed through a process called nitrogen fixation.

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Since air is a type of matter, air must be made out of tiny particles that are called _______.

umka2103 [35]

Answer:

Explanation:

C. Atoms

6 0

4 years ago

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the element silver has an atomic mass of 108 u and consists of two stable isotopes silver-107 and silver-109.

DochEvi [55]

Silver-109 has a mass of 109 amu. It is one of the isotopes of the silver atm.

<h3>What are isotopes?</h3>

The term isotopes has to do with the atoms of the same element that has the same atomic number but different mass numbers. This implies that the isotopes that we have do have the same number of protons but they do not have the same number of neutrons and the fact that they differ in the number of neutrons implies that would have the same chemical property.

We can see from the question that there are two isotopes of silver and tehse isotopes of silver have been identified as silver-107 and silver-109. The isotopes do have the same mass and not the same number of protons.

The percentage abundance of the two isotopes are not the same which means that one is more than the other. We can now see that the mass of the silver 109 in amu is 109 amu.

Learn more about atomic mass:brainly.com/question/5661976

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7 0

2 years ago

In a redox reaction, which particles are lost and gained in equal numbers

Anna35 [415]

In a redox reaction electrons are lost and gained in equal numbers. The species that is oxidized gives electrons to the species that is reduced. I hope this helps. Let me know if anything is unclear.

5 0

4 years ago

A rock with a mass of 70 grams is dropped into a graduated cylinder with 30 mL of water in it. The water level rose to 35 mL cal

Scilla [17]

Answer:

Explanation:

70g/(35mL-30mL)=14g/mL

5 0

3 years ago

Read 2 more answers

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

3 years ago