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3 years ago

How does the kinetic energy of a substance's particles in the gas phase compare to their kinetic energy in the solid phase?

Chemistry

2 answers:

Shtirlitz [24]3 years ago

7 0

Answer: Option (D) is the correct answer.

Explanation:

In solids, the particles are held together by strong intermolecular forces of attraction. As a result, there is very less or no kinetic energy between the particles.

Therefore, solids are rigid and have definite shape and volume.

Whereas in gases, the particles are held by weak Vander waal forces. As a result, the particles collide with each other and gains kinetic energy.

Thus, we can conclude that the particles have more kinetic energy in the gas phase than in the solid phase.

nekit [7.7K]3 years ago

6 0

Answer is d. gas has more kinetic energy than liquid and liquid more than solid

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Each element absorbs light at specific wavelengths unique to that atom. When astronomers look at an object's spectrum, they can determine its composition based on these wavelengths. The most common method astronomers use to determine the composition of stars, planets, and other objects is spectroscopy.
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3 years ago

There are 0.55 moles of carbon dioxide gas in a 15.0 L container. This container is at a temperature of 300 K. What is the press

sertanlavr [38]

Answer:

$\large \boxed{\text{D.) 91 kPa}}$

Explanation:

We can use the Ideal Gas Law — pV = nRT

Data:

V = 15.0 L

n = 0.55 mol

T = 300 K

Calculation:

$\begin{array}{rcl}pV & =& nRT\\p \times \text{15.0 L} & = & \text{0.55 mol} \times \text{8.31 kPa$\cdot$ L$\cdot$K$^{-1}$mol$^{-1}\times$ 300 K}\\15.0p & = & \text{1370 kPa}\\p & = & \textbf{91 kPa}\end{array}\\\text{The pressure in the container is $\large \boxed{\textbf{91 kPa}}$}$

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3 years ago

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ExtremeBDS [4]

Answer:

Explanation:

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3 years ago

Three balloons filled with three different gaseous compounds each have a volume of 22.4 L at STP. Would these balloons have the

Alekssandra [29.7K]

Answer:

A. No; B. yes

Explanation:

A. Mass

The balloons contain different gases, which will have different densities.

Mass = volume × density

m = V × D

However, the volume is the same for all three balloons.

Thus m = kD

And the mass of the gas is directly proportional to the density.

Since the density varies, the mass varies.

B. Number of molecules

This is Avogadro's Hypothesis:

At the same conditions of temperature, equal volumes of gases contain the same number of molecules.

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4 years ago

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Answer:

C. “The electrons are moving easily between the nuclei of metal atoms.”

Explanation:

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3 years ago