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3 years ago

The molecules of a substance must have what characteristics in order to be flexible

Chemistry

1 answer:

Goryan [66]3 years ago

6 0

Answer:
The molecules of a substance which must have the ability to move past one another are said to be flexible.

Explanation:
Those substances are said to be flexible which can be bent without breaking. There are many substances which are hard in nature but still can be bent. The hardness of such materials is due to strong interactions between the molecules and the flexibility comes due to their amorphous backbone. Therefore, greater the crystalline level of macromolecules lesser is the flexibility and greater the amorphous character greater is the flexibility and vice versa. Also, the flexibility of polymers is increased by adding plastisizers in it. Plastisizers make the hard polymers flexible by breaking the crosslinkers and enabling the macromolecules to move past one another.

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What makes the gravitational pull between the earth and the moon stronger than the gravitational pull between two people ?

lesya692 [45]

Answer: Mass

Explanation:

The moon and the Earth have a much higher gravitational pull than people because they weigh way more.

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3 years ago

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10. What is used to "cure" a virus *

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Vaccine

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4 years ago

Which statement describes the water gas particles in the air above the cup compared with the water liquid

Law Incorporation [45]

Answer:

The particles move faster and are far apart

Explanation:

A substance may exist in three states of matter; solid, liquid and gas.

In the solid state, there is very strong intermolecular forces between the particles of the substance. They can only vibrate or rotate about their mean positions but can not translate.

In the liquid state, the particles of the substance have a greater degree of freedom than in the solid. The magnitude of intermolecular forces is lower than in solids, the molecules can move at low speeds.

In a gas, the molecules are separated from each other with negligible intermolecular interaction hence they move at very high speed.

Therefore, for the water gas particles in the air above the cup; the particles move faster and are far apart.

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3 years ago

MAZA11189 can you solve this

Marysya12 [62]

Answer:

The answer is below

Explanation:

A) The method of extracting essential oils from aromatic plants is important however, the process of distillation is the main method for extracting the aromatic parts of plants.

B) The condenser fan plays an important role on circulating the air across the coil to facilitate heat transfer. The condenser refrigerant and pumps it to a coil in the form of a hot gas.

4 0

3 years ago

Determine the empirical formula for a compound that is 70.79% carbon, 8.91% hydrogen, 4.59% nitrogen, and 15.72% oxygen.

Debora [2.8K]

Answer:

The answer to your question is: C₁₈ H₂₇ N O₃

Explanation:

Data

Carbon = 70.79 g

Hydrogen = 8.91 g

Nitrogen = 4.58 g

Oxygen = 15.72 g

Process

AT C = 12 g

AT H = 1 g

AT N = 14 g

AT O = 16 g

Carbon

12 g ------------------------ 1 mol

70.79 g ------------------------- x

x = (70.79 x 1) / 12

x = 5.9 mol of C

Hydrogen

1 g ----------------------- 1 mol

8.91 g --------------------- x

x = (8.91 x 1) / 1

x = 8.91 mol of H

Nitrogen

14 g ---------------------- 1 mol

4.58 g ------------------- x

x = (4.58 x 1) / 14

x = 0.33 mol

Oxygen

16 g ------------------------ 1 mol

15.72 g -------------------- x

x = (15.72 x 1)/16

x = 0.98

Divide by the lowest number of moles

Carbon 5.9 / 0.33 = 17.9 ≈ 18

Hydrogen 8.91 / 0.33 = 27

Nitrogen 0.33 / 0.33 = 1

Oxygen 0.98 / 0.33 = 2.9 ≈ 3

C₁₈ H₂₇ N O₃

4 0

4 years ago