CHEMISTRY HIGH SCHOOL

Which of the following is most likely to be amorphous?-glass
-solid sulfur
-solid calcium
-gold

Answers

Answer 1
Answer:

Answer: Option (a) is the correct answer.

Explanation:

Amorphous means without any crystalline structure or definite shape. Whereas a solid whose atoms are not bonded together in a definite lattice pattern. This solid is non-crystalline in nature.

For example, glass, gel, plastic etc are all amorphous solids.

Whereas solid sulfur, solid calcium, and gold have a definite lattice pattern and has a crystalline structure. Thus, they are not amorphous solids.

Thus, we can conclude that out of the given options glass is most likely to be amorphous.
Answer 2
Answer: the best answer here would be glass.

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Increasing the ? of a solvent increases the solubility of the solute

Answers

There are a lot of ways to increase the solubility of the solute. Increasing the temperature, mixing time and surface area of a solvent increases the solubility of the solute

The answer is temperature

Which of the following gases has the highest average molecular velocity at 25 °C? H2O He
HCl
BrF
NO2

Answers

Answer:

He

Step-by-step explanation:

A postulate of the Kinetic Molecular Theory is that at a given temperature, the average kinetic energy of the molecules is directly proportional to the Kelvin temperature.

KE = ½ mv² ∝ T

            mv² ∝ T      Divide each side by T

               v² ∝ T/m

If T is constant.

              v² ∝ 1/m     Take the square root of each side

               v ∝ 1/√m

This is an inverse relationship, so the molecules with the smallest molecular mass should have the highest average speeds.

A helium molecule has the smallest mass, so helium has the highest average molecular velocity.

.A pure gas that is 14.3% hydrogen and 85,7% carbon by mass has a density of 2.5 g L-' at 0°C and 1 atm
pressure. What is the molecular formula of the gas

Answers

Answer:

C

Explanation:

4× CH2 = C4H8

An atom has an atomic number of 12 and a mass number of 25. How many neutrons does the atom have?12
13
25
37

Answers

Answer:

The correct answer for the number of neutrons in this atom is: 13

Explanation:

Hello! Let's solve this!

The atomic number indicates the number of protons in the nucleus.

The mass number is the sum of protons and neutrons in the nucleus.

So, we have to make the difference between both numbers.

25-12 = 13

The correct answer for the number of neutrons in this atom is: 13
25-12= 13. The mass number is the atomic number plus the no. of neutrons

A major function of your nose is cleaning the air you breathe.
True
False

Answers

Answer:

It's true I got it wrong.

Explanation:

2. Based on what you know about waves and light, do you think that light can bemodeled as a wave? Explain why or why not.

Answers

Answer:

Light as a wave: Light can be described (modeled) as an electromagnetic wave. In this model, a changing electric field creates a changing magnetic field. This changing magnetic field then creates a changing electric field and BOOM - you have light. ... So, Maxwell's equations do say that light is a wave.

Explanation:

Hope this helps

Answer:

Light as a wave: Light can be described (modeled) as an electromagnetic wave. In this model, a changing electric field creates a changing magnetic field. This changing magnetic field then creates a changing electric field and BOOM - you have light. ... So, Maxwell's equations do say that light is a wave.

Explanation:

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