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yulyashka [42]
3 years ago
6

Why is the behavior of real gases still useful?

Chemistry
1 answer:
Marina86 [1]3 years ago
5 0
Generally, a gas behaves more like an ideal gas at higher temperature and lower pressure, as the potential energy due to intermolecular forces becomes less significant compared with the particles' kinetic energy, and the size of the molecules becomes less significant compared to the empty space between them.

Ex: Provides more molecular space within particles and energetic compounds

Hope this helps :)
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On the basis of the expected charges on the monatomic ions, give the chemical formula of each of the following compounds: (a) ma
lakkis [162]

Answer:

(a) magnesium arsenide: As₂Mg₃

(b) indium(III) sulfide: In₂S₃

(c) aluminum hydride: AlH₃

(d) hydrogen telluride: H₂Te

(e) bismuth(III) fluoride: BiF₃

Explanation:

(a) magnesium arsenide:

The expected oxidation states are-

Magnesium ion- Mg²⁺

Arsenide ion- As³⁻

The chemical formula is: As₂Mg₃

(b) indium(III) sulfide:

The expected oxidation states are-

Indium ion- In³⁺

Sulfide ion- S²⁻

The chemical formula is: In₂S₃

(c) aluminum hydride:

The expected oxidation states are-

Aluminium ion- Al³⁺

Hydride ion- H⁻

The chemical formula is: AlH₃

(d) hydrogen telluride:

The expected oxidation states are-

Hydrogen - H⁺

telluride ion- Te²⁻

The chemical formula is: H₂Te

(e) bismuth(III) fluoride:

The expected oxidation states are-

bismuth ion- Bi³⁺

fluoride ion- F⁻

The chemical formula is: BiF₃

5 0
3 years ago
Compounds have physical properties that
Orlov [11]
The answer is B, they differ greatly from the properties of all their elements. For example: Water is non-flamable but it is made from hydrogen, which is highly flammable, and oxygen, a gas that supports combustion.
4 0
3 years ago
Which of the following statements regarding alpha particles are true? Check all that apply.a. Alpha particles have a mass number
egoroff_w [7]

Answer:

The only true statement is:

  • a. <u><em>Alpha particles have a mass number of 4</em></u>

Explanation:

<em>Alpha particles</em> are radiactive particles equivalent to a helium nucleus, so they have two protons and two neutrons.

Hence, alpha particles, α, are represented as:

  • ⁴₂He

The superscript 4 to the left of the chemical symbol is the <em>mass number:</em> 2 protons + 2 neutrons = 4

The subscript 2 to the left of the chemical symbol is the atomic number: 2 protons = 2.

Hence, the statement "a. Alpha particles have a mass number of 4" is true.

As for the other statements, you have:

<em>b. Alpha particles have a nulear charge of +1:</em> <u>false</u>

Since, these particles are the nucleous of the helium atom, the nuclear charge equals the number of protons of this atom: +2. Hence, the statement is false.

c. <em>Alpha particle formation is accompanied by the conversion of a proton into a neutron</em> and d. <em>Alpha particle formation is accompanied by the conversion of a neutron into a proton</em>. <u>(both false</u>)

The conversion of a protons into a neutrons and the conversion of a neutron into a proton are product of other kind of radiactive desintegrations.

  • The conversion of a proton into a neutron involves the emission of a positron ( particle with same mass as the electron but positive charge) from the nucleus, which is represented as ⁰₊₁β.

  • The conversion of a neutron into a proton involves the emssion of an electron from the nucleus, which is the emission of a beta particle represented as ⁰₋₁β.

Therefore, these last two statements are also false.

4 0
3 years ago
What does kcal mean again?
Neporo4naja [7]
It means kilocalorie
4 0
3 years ago
Read 2 more answers
If the frequency of the photon increases what happens to the wavelength and energy?
kap26 [50]
The energy<span> per </span>photon<span> is proportional to the </span>frequency<span> of the radiation when considered as waves, ie inversely proportional to the </span>wavelength. Double the wavelength<span>, halve the </span>photon energy<span>. This means that long </span>wavelength<span> radiation (radio waves) has low </span>photon energy<span> and so does not penetrate matter.</span>
8 0
4 years ago
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