In this diagram, medium A represents water and medium B represents air. The phenomenon in this diagram, moving from A to B, is calledA) diffraction.
B) dispersion.
C) refraction.
D) resolution.

Answers

Answer 1

Answer: The answer is C) Refraction.
Hope this helps!

Answer 2

Answer: Hey there

The correct answer is (C)

= refraction

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Which term describes this reaction? CH3Br(aq) + OH-(aq) -> CH3OH(aq) + Br-(aq) A. addition B. condensation C. elimination D. substitution

Answers

Answer is: D. substitution.

Substitution reaction or single displacement reaction is a chemical reaction in which one functional group in a chemical compound is replaced by another functional group.

Balanced chemical reaction: CH₃Br(aq) + OH⁻(aq) → CH₃OH(aq) + Br⁻(aq).

In this balanced chemical reaction hydroxy group OH⁻ replaced one atom of bromine (Br⁻) in methyl bromide (CH₃Br).

Answer : The correct option is, (D) Substitution reaction.

Explanation :

Addition reaction : It is a type of reaction in which a molecule combined with the another molecule to give a new larger molecule.

The general representation of this reaction is,

$A+B\rightarrow C$

Condensation reaction : It is a type of reaction in which two molecules combine to form a larger molecule and also producing a smaller molecule such as water.

$R_1-OH+H-OOCR_2\rightarrow R_1-O-COR_2+H_2O$

Elimination reaction : It is a type of reaction in which the loss of elements from the starting material to form a double bond in the product.

The general representation of this reaction is,

$HR_1-R_2X+B\rightarrow R_1=R_2+HB^++X^-$

Substitution reaction : It is a type of reaction in which one functional group is replaced by the another functional group.

The general representation of this reaction is,

$AB+C\rightarrow AC+B$

(B and C are the two different functional groups)

In the given reaction, Br (functional group) is replaced by the hydroxide ion (functional group). So, this reaction is a substitution reaction.

Hence, the given reaction is a substitution reaction.

Which best describes the function of a centrifuge?to separate the solute from the solvent
to separate the dissolved part of a solution into layers
to separate a mixture by heating it for a long period of time
to separate the undissolved particles of a mixture into layers

Answers

The correct answer is the last statement. Centrifugation is to separate the undissolved particles of a mixture into layers. It separates a homogeneous mixture by spinning it at high speeds. The precipitate settles at the bottom while the solution is clear.

The correct answer is the last answer choice

If an aqueous solution of a soluble ionic com- pound is made, it will usually1. become a ductile solid.
2. become covalent.
3. form an insoluble solid.
4. conduct current.

Answers

A soluble ionic compound in aqueous form will be able to 4. conduct current

An aqueous ionic compound is able to conduct current because:

They possess charged ions
They are able to move around

As a result of being able to move around in a solution, the ions of aqueous compound will be able to carry electricity from one point to another and so will be able to conduct electricity.

In conclusion, aqueous solutions of ionic compounds can conduct current.

Find out more at brainly.com/question/17945526.

Answer:

4. conduct current

A gas changes directly to a solid during(1) fusion (3) saponification(2) deposition (4) decomposition

Answers

Answer is: deposition.

Deposition is a thermodynamic process in which gas transforms into solid without passing through the liquid phase.

For example, forming snow in clouds directly from water vapor.

During deposition phase change, energy is released.

Another example, the phase change H₂(g) → H₂(s) is called deposition and the enthalpy change, ΔH, for this phase change has a negative (-) sign.

A gas changes directly to a solid during deposition, hence option 2 is correct.

How does Deposition take place?

Deposition is the process by which a substance goes straight from the gas to the solid state after cooling, bypassing the liquid state. Examples of substances that undergo deposition include naphthalene, camphor, iodine, and ammonium chloride.

The opposite is sublimation, through this process, a gas can become a solid without ever entering the liquid state. When gas particles get extremely cold, it happens.

Learn more about Deposition here:

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Rita divides Avogadro’s number (approximately 6.022 mc002-1.jpg 1023) by 2.0550 to calculate the number of atoms in a sample. Which expression gives her result to the correct number of significant figures?

Answers

Here you have two numbers. Avogadro's number is given with four significant figures, while number 2.0550 is given with five significant figures. That means that your result must be shown with four significant figures. So, 6.022 * 10 ^ 23 / 2.0550 = 2.930 * 10 ^ 23, which has been rounded to four significant figures. Answer: 2.930 * 10 ^ 23

Answer:

Answer is B

Explanation: Trust

The nucleus of an atom X contains 15 protons and 16 neutrons. a) Determine the number of electrons of this atom.