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tia_tia [17]
3 years ago
14

In which state do molecules have the highest kinetic energy? in the liquid state in the solid state in the gaseous state during

the phase change from liquid to gas
Chemistry
2 answers:
Ipatiy [6.2K]3 years ago
8 0

Answer: Option (c) is the correct answer.

Explanation:

Kinetic energy is defined as the energy obtained by an object or substance due to their motion.

Also, kinetic energy is directly related to temperature as follows.

                        K. E = \frac{3}{2}kT

Hence, kinetic energy is directly proportional to temperature.

So, more is the temperature provided to a substance more will be the kinetic energy of its molecules. Therefore, more will be their motion and this leads to more number of collisions between the molecules.

As in solids, molecules are held by strong intermoleculear forces so, they do not move from their initial position and hence, they have definite shape and volume.

In liquids, molecules are held by less strong intermolecular forces of attraction. So, they have definite volume but no definite shape.

In gases, molecules are held by weak intermolecular forces. So, these molecules are away from each other due to high kinetic energy as they have more number of collisions.

Thus, we can conclude that in the gaseous state molecules have the highest kinetic energy.

Dvinal [7]3 years ago
5 0
It depends on the substance,but for most substance it is in the gaseous state.
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Match the term with the definition.
statuscvo [17]

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sublimation is a phase change from solid to gas

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MASHA ALLAH


6 0
2 years ago
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A chemistry student weighs out of chloroacetic acid into a volumetric flask and dilutes to the mark with distilled water. He pla
Nitella [24]

Answer:

11.6mL of the 0.1400M NaOH solution

Explanation:

<em>0.154g of chloroacetic acid diluted to 250mL. Titrated wit 0.1400M NaOH solution.</em>

<em />

The reaction of chloroacetic acid, ClCH₂COOH (Molar mass: 94.5g/mol) with NaOH is:

ClCH₂COOH + NaOH → ClCH₂COO⁻ + Na⁺ + H₂O

<em>Where 1 mole of the acid reacts per mole of the base.</em>

<em />

That means the student will reach equivalence point when moles of chloroacetic acid = moles NaOH.

You will titrate the 0.154g of ClCH₂COOH. In moles (Using molar mass) are:

0.154g ₓ (1mol / 94.5g) = <em>1.63x10⁻³ moles of ClCH₂COOH</em>

To reach equivalence point, the student must add 1.63x10⁻³ moles of NaOH. These moles comes from:

1.63x10⁻³ moles of NaOH ₓ (1L / 0.1400moles NaOH) = 0.0116L of the 0.1400M NaOH =

<h3>11.6mL of the 0.1400M NaOH solution</h3>
5 0
3 years ago
CHEM HELP PLEASE
natka813 [3]

Answer:

90.2%

Explanation:

% yield = actual yield/ theoretical yield * 100%

% yield = (312/346)*100% = 90.2%

3 0
3 years ago
What percentage of carpet is calcium carbonates?
e-lub [12.9K]

Answer:

the percentage of carpet is calcium carbonates is 12.456734190

5 0
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True or false, when a material loses thermal energy, it usually contracts.
Brums [2.3K]

Answer:

True

Explanation:

Whenever something loses thermal energy, it contracts and becomes smaller.

8 0
2 years ago
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