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nadezda [96]
2 years ago
13

What is organic chemistry​

Chemistry
1 answer:
tester [92]2 years ago
5 0

Answer:

Organic chemistry

Explanation:

Organic chemistry is part of the chemistry that studies carbon compounds, which also use organic compounds, which have characteristics.

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Can invasive species affect humans?
skad [1K]

Answer:

To a certain extent absolutly. They can impact human health for the worse and more.

4 0
3 years ago
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The diagram represents liquid water in a pan on a hot plate. The liquid water is boiling and changing into water vapor. The proc
Alika [10]

Answer:

Physical change

Explanation:

The molecules are being rearranged as the water changes phases from liquid to gas, but this doesn't change the chemical structure of the water.

5 0
2 years ago
Based on the reactivities of the elements involved, which reactions will form products that are more stable than the reactants?
myrzilka [38]

2 LiI + Cl₂ → 2 LiCl + I₂

2 LiBr + F₂ → 2 LiF + Br₂

<h3>Explanation</h3>

Each of the five reactions involve one halogen molecule (F₂, Cl₂, Br₂, and I₂) substituting the ion of another halogen (F⁻, Cl⁻, Br⁻, and I⁻).

Halogen atoms are found in group 17 of the periodic table. They are all non-metal elements. Each of the halogen atom will gain one electron to form an ion of charge -1. However, the tendency to do so decreases down the group.

  • F is the first halogen in group 17. It has only two shells of electrons.
  • Cl is right under F. Its electrons occupy three main energy shells.
  • Br follows with four main energy shells.
  • I is under Br and has five main energy shells.

Atoms of all four elements have the same effective nuclear charge of +7. However, F has the smallest radius. As a result, it has the strongest hold on electrons around it. Its ion F⁻ is more stable than ions of Cl, Br, or I. Similarly, its molecule F₂ is more reactive than Cl₂, Br₂, and I₂.

As a result, the stability of halogen molecules increases down the group:

  • Stability: F₂ < Cl₂ < Br₂ < I₂.

The stability of halogen ions decreases down the group:

  • Stability: F⁻ > Cl⁻ > Br⁻ > I⁻.

Cl₂ repaces F⁻ (from LiF) in first reaction. F₂ and Cl⁻ are produced. F₂ is less stable than Cl₂. Cl⁻ is less stable than F⁻.

Cl₂ replaces I⁻ (from LiI) in the second reaction. I₂ and Cl⁻ are produced. I₂ is more stable than Cl₂. Cl⁻ is more stable than I⁻.

Br₂ replaces Cl⁻ (from LiCl) in the third reaction. Cl₂ and Br⁻ are produced. Cl₂ is less stable than Br₂. Br⁻ is less stable than Cl⁻.

F₂ replaces Br⁻ (from LiBr) in the fourth reaction. Br₂ and F⁻ are produced. Br₂ is more stable than F₂. F⁻ is more stable than Br⁻.

I₂ replaces Br⁻ (from LiBr) in the fifth reaction. Br₂ and I⁻ are produced. Br₂ is less stable than I₂. I⁻ is less stable than Br⁻.

5 0
3 years ago
There are 85.63 g of CO2 gas in a container maintained at STP. How many liters of CO2 are there in that container?
konstantin123 [22]

Answer:

V = 48.64 L

Explanation:

Given data:

Mass of CO₂ = 85.63 g

Temperature = 273 K

Pressure = 1 atm

Volume of CO₂ = ?

Solution:

Number of moles of CO₂:

Number of moles = mass/molar mass

Number of moles = 85.63 g / 40 g/mol

Number of moles = 2.14 mol

Volume in Litter:

PV = nRT

R = general gas constant = 0.0821 atm.L/mol.K

1 atm× V = 2.14 mol ×0.0821 atm.L/mol.K  ×273 K

V = 48.64 atm.L / 1 atm

V = 48.64 L

7 0
2 years ago
What are the names of the structures in the lungs where gas exchange accuse ?
elena-s [515]
The structures in the human lungs where gas exchange occurs is at the alveoli. Tiny air filled sacs at the end of bronchioles.
5 0
3 years ago
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