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3 years ago

Why is a bottle made from amorphous solids

1 answer:

3 0

The term amorphous solids is in some books synonymously termed glass. Amorphous solids are substances which lack a crystalline structure. They are solids which can flow like liquids. Their molecules are not arranged in any definite lattice pattern and this gives them some unique properties that enable them to be used to make bottles.

1. In response to mechanical force, amorphous solids are not willing to break into smaller lattices like crystalline solids, therefore they are more shatter resistant.

2. They are more sturdy

3. They soften more easily than crystalline solids and therefore more readily manipulated.

4. They do not have a distinct melting point and so they are more easily recycled.

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Which molecule will undergo only London dispersion forces when interacting with other molecules of the same kind? a.HCl b.C2H5OH

ohaa [14]

Answer:

CH4

Explanation:

London dispersion forces are a type of force acting between atoms and molecules that are normally electrically symmetric; that is, the electrons are symmetrically distributed with respect to the nucleus. They are part of the van der Waals forces(Wikipedia). It is a temporary attractive force that results when the electrons in two adjacent atoms occupy positions that make the atoms form temporary dipoles. This force is sometimes called an induced dipole-induced dipole attraction(Chem Purdue).

If we consider HCl, C2H5OH and NH3, we will discover that they all have polar bonds. Consequently, dipole - dipole interaction as well as hydrogen bonds exist between their molecules.

CH4 is nonpolar. Being a nonpolar molecule, the only possible intermolecular interaction forces between its molecules is the London dispersion forces.

5 0

3 years ago

What is this wave transferring to the tree?

Alexxandr [17]

Option 4 . Energy is transferred to the tree in this wave.

Explanation:

The figure shows that the rope is tied to tree at one end and at the other end a boy is holding it.

Here the boy swings the rope to give it a sudden movement and due to this movement the transverse waves of sinusoidal form are obtained and gets traveled till the tree.

Here the energy used by the boy to give a quick movement to the rope gets transferred till the other end of the rope that means the energy is getting transferred to the tree.

Along with the energy the particles of the way also gets transferred to the tree unless there is an obstacle.

Therefore in this wave energy is transferred to the tree.

3 0

3 years ago

If .00327 g of a gas dissolves in 0.376 L of water at 867 torr, what quantity of this gas (in grams) will dissolve at 759 torr?

Vinil7 [7]

At 759 torr, 0.002 86 g of the gas will dissolve.

Henry’s law states:

$c = k_{H}p$ , where

where $K_{H}$ is a proportionality constant called the Henry's Law constant.

If we have the same solute in the same solvent at two different pressures $p_{1}$ and $p_{2}$ ,

$c_{1} = k_{H}p_{1}$ and $c_{2} = k_{H}p_{2}$

Dividing the two equations, k_H cancels and we get

c_1/c_2 = p_1/p_2

c_2 = c_1 × p_2/p_1

The volumes of solvent are the same, so we can use the masses of the solute instead of concentrations.

∴ c_2 = 0.003 27 g × (759 torr/867 torr) = 0.002 86 g

8 0

3 years ago

What is the term for the set of steps that scientists use to gather reliable information?

otez555 [7]

Answer:

I think it would be Scientific Method.

7 0

4 years ago

A characteristic feature of any form of chromatography is the ________.a. calculation of an Rf value for the molecules separated

podryga [215]

Answer : The correct option is, (c) use of a mobile and a stationary phase.

Explanation :

Chromatography : It is a separation process or technique of a mixture in which a mixture is distributed between the two phases at different rates, one of which is stationary phase and another is mobile phase.

Mobile phase : The mixture is dissolved in a solution is known as mobile phase.

Stationary phase : It is an adsorbent medium and It is a solid, liquid or gel that remains immovable when a liquid or a gas moves over the surface of adsorbent. It remains stationary.

Hence, a characteristic feature of any form of chromatography is the use of a mobile and a stationary phase.

4 0

3 years ago