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3 years ago

A measure of the kinetic energy of particle motion within a substance is _____.

Chemistry

2 answers:

nasty-shy [4]3 years ago

6 0

Answer: Option (b) is the correct answer.

Explanation:

It is known that energy obtained by an object due to its motion is known as kinetic energy. Whereas an energy obtained by an object due to its position is known as potential energy.

For example, when water is heated then bond between its molecules starts to break and therefore, molecules start to move as they tend to gain kinetic energy due to increase in temperature.

Also, it is known that K.E = $\frac{3}{2}kT$

where k = boltzmann constant

T = temperature

Hence, kinetic energy is proportional to temperature. So, more is the increase in temperature more will be the increase in kinetic energy.

Thus, we can conclude that a measure of the kinetic energy of particle motion within a substance is temperature.

Irina18 [472]3 years ago

5 0

All particles (atoms and molecules) of matter have kinetic energy because they are always in motion.

A measure of the kinetic energy of particle motion within a substance is temperature. If the particles move faster, they have more kinetic energy, and the substance has a higher temperature

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Which of the following choices represents elements with the most similar

matrenka [14]

Answer:

Explanation:

F Cl Br belongs to the Same group

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3 years ago

You can obtain a rough estimate of the size of a molecule with the following simple experiment: Let a droplet of oil spread out

mina [271]

Answer:

The diameter of the oil molecule is $4.4674\times 10^{-8} cm$ .

Explanation:

Mass of the oil drop = $m=9.00\times 10^{-7} kg$

Density of the oil drop = $d=918 kg/m^3$

Volume of the oil drop: v

$d=\frac{m}{v}$

$v=\frac{m}{d}=\frac{9.00\times 10^{-7} kg}{918 kg/m^3}$

Thickness of the oil drop is 1 molecule thick.So, let the thickness of the drop or diameter of the molecule be x.

Radius of the oil drop on the water surface,r = 41.8 cm = 0.418 m

1 cm = 0.01 m

Surface of the sphere is given as: a = $4\pi r^2$

$a=4\times 3.14\times (0.418 m)^2=2.1945 m^2$

Volume of the oil drop = v = Area × thickness

$\frac{9.00\times 10^{-7} kg}{918 kg/m^3}=2.1945 m^2\times x$

$x= 4.4674\times 10^{-10} m= 4.4674\times 10^{-8} cm$

The thickness of the oil drop is $4.4674\times 10^{-8} cm$ and so is the diameter of the molecule.

6 0

3 years ago

Organize the following atoms according to increasing number of orbitals surround the nucleus: Rubidium (Rb), Phosphorus (P), Neo

VladimirAG [237]

Hi,

Answer C
...................

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3 years ago

What is a positive ion?

BaLLatris [955]

Answer:

If the atom has more electrons than protons, it is a negative ion or ANION. If it has more protons than electrons, it is a positive ion.

Explanation:

Positive ions are typically metals or act like metals. Many common materials contain these ions. Mercury is found in thermometers, for instance, and aluminum is a metal that is found in a surprising amount of things.

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3 years ago

How to balance <br> Mg + O2 > MgO

katovenus [111]

<span>Mg + O2 > MgO. In reactant side, 2 O atoms and 1 Mg are present. In product side, 1 Mg and O atoms are present. Put 2 in product side to balance O atoms and 2 at Mg in reactant side to balance Mg atoms. Therefore the balanced equation becomes, 2Mg + O2 ----> 2MgO. Hope it helps.</span>

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3 years ago