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aliina [53]
3 years ago
13

Which of the following is true regarding phase changes?

Chemistry
2 answers:
kodGreya [7K]3 years ago
8 0
B is true since evaporation changes a liquid into a gas and dondensation turns a gas into a liquid
Airida [17]3 years ago
7 0

Answer: B. Condensation is the reverse of evaporation.

Explanation: Condensation is a process in which a gas changes into liquid phase when allowed to cool.

Evaporation : It is process in which liquid changes into gaseous phase by providing heat.

Sublimation : It is a process in which a solid directly changes to gaseous phase by providing heat.

Melting : It is process in which a solid changes into liquid phase by providing heat.

Deposition is a  process in which a gas deposits as solid phase when allowed to cool

Freezing is a process in which a liquid changes into solid phase when allowed to cool.

Boiling is a process in which liquid changes into gaseous phase by providing heat at some particular temperature.



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What happens to the average kinetic energy of the particles in a sample of matter as the temperature of the sample is increased?
antiseptic1488 [7]

Answer:

  • <em>As the temperature of a sample of matter is increased, the average kinetic energy of the particles in the sample </em><u>increase</u><em>.</em>

Explanation:

The <em>temperature</em> of a substance is the measure of the <em>average kinetic energy </em>of its partilces.

The temperature, i.e. how hot or cold is a substance, is the result of the collisions of the particles (atoms or molecules) of matter.

The kinetic theory of gases states that, if the temperature is the same, the average kinetic energy of any gas is the same, regardless the gas and other conditions.

This equation expresses it:

  • Avg KE = (3/2) (R / N) T

Where Avg KE is the average kinetic energy, R is the universal constant of gases, N is Avogadro's constnat, and T is the temperature measure in absolute scale (Kelvin).

As you see, in that equation Avg KE is propotional to T, which means that as the temperature is increased, the average kinetic energy increases.

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3 years ago
I'll give brainliest
ss7ja [257]

Answer:

b,d,f

Explanation:your welcome give brainilest

8 0
3 years ago
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Which two processes allow water to enter the atmosphere in a gaseous state? precipitation and evaporation evaporation and conden
Oksana_A [137]
Evaporation from the rivers, seas and so on,
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What type of reaction is this.... CH2(g)+02(g)
oee [108]

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Explanation:

This reaction is called a combustion reaction. It is very peculiar to reactions involving hydrocarbons.

In such reactants, oxygen gas is used as a reactant. It combines with fuel usually the hydrocarbon to produce heat and light energy.

For the combustion of most hydrocarbons, water and carbon dioxides are usually the product.

        2CH₂   +   3O₂  →   2CO₂   +  2 H₂O

learn more:

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How do we view large areas of earth’s surface?
ikadub [295]

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Explanation:

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