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ASHA 777 [7]
3 years ago
13

what are the similarities and differences between the gas properties and kinetic molecular theory postulates?

Chemistry
1 answer:
Sever21 [200]3 years ago
3 0
The Kinetic Molecular Theory Postulates state that gases are made up of a larger number of particles, which, behave like hard, spherical objects that move in constant and random motion. Moreover, the particles move straight until they collide with other particles or walls in the containers, the particles are also smaller than the distance between them making the volume of gasses mostly empty space. There are also no attractive forces between the particles or between the particles or between the particles and the walls of the container. Lastly, the average kinetic energy of gas particles depends on the temperature of the gas alone.

In the other hand, the properties of gasses are that a gas has no define volume or shape, gasses also have low densities and all behave the same even in changes with temperature and pressure by expanding or contracting depending on the change.
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Which of the following statements is not correct?
Pavlova-9 [17]
Answer: This option is incorrect: <span>B. Covalent compounds are held together by much stronger interparticle forces than are ionic compounds.

Justification:

Ionic bonds, held by ionic compounds, are much stronger than covalent bonds, held by covalent compounds.

In ionic bonds one element yields one or more electrons forming a cation (a positively charged ion) and the other element accepts the electrons forming an anion (a negatively charged ion).

The anion and the cation are electrostatically atracted by each other. This electrostatic atraction force, named ionic bond, is very strong.

As result of this, the ionic compounds form strong crystals with high boiling and fusion points. A good example of this the sodium chloride, formed by the union of cation Na(+) and anion Cl(-).

The covalent bonds are result of sharing electrons and do not form ions. This bond is weaker than the ionic bond.
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4 0
3 years ago
Calculate the mass of atoms of carbon and 3 molecules of hydrogen​
PSYCHO15rus [73]

The mass of atoms of carbon and 3 molecules of hydrogen​ : 18 g/mol

<h3>Further explanation </h3>

An atomic mass unit ( amu or "u") is a relative atomic mass of 1/12 the mass of an atom of carbon-12.  

The molar mass(molecular mass-formula mass-molecular weight(MW)) of a compound is the sum of the relative atomic mass (Ar) of the constituent elements of the compound

Can be formulated :  

M AxBy = (x.Ar A + y. Ar B)  

The mass of atom of Carbon(C)⇒Ar = 12 g/mol

The mass of 1 molecule of Hydrogen - H₂(MW) : 2 g/mol

The mass of 3 molecules of Hydrogen : 3 x 2 = 6 g/mol

So the mass of atoms of carbon and 3 molecules of hydrogen​ :

\tt 12+6=18~g/mol

3 0
3 years ago
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Katena32 [7]

Answer:

Explain more please

Explanation:

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7 0
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ork out which of the displacement (S), initial velocity (U), acceleration (A) and time (T) you have to solve for final velocity (V).

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If you have S, U and T, use V = 2(S/T) - U.

If you have S, U and A, use V = SQRT(U2 + 2AS)

6 0
3 years ago
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