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Answer:

nitrogen, oxygen, and fluorine.

Explanation:

Hydrogen bonding occurs where hydrogen is bound to STRONGLY electronegative elements, viz. nitrogen, oxygen, and fluorine. Explanation: See this answer. You should also compare the boiling points of N H 3, OH 2, and H F, with the hydrides of the lower Group. i.e. P H 3,SH 2 etc.

Answer:

Hydrogen forms bonds with Nitrogen, Oxygen and Fluorine.

Explanation:

Hydrogen bonding occurs only in molecules where hydrogen is covalently bonded to one of the above three elements.

Answer:

The actual electronic structure of the molecule (the average of the resonance forms) is called a resonance hybrid of the individual resonance forms.

Explanation:

hope this help

pls mark brainliest

Answer:

10,148 kJ

Explanation:

Did it on Engenuity 2022 and got it right - just double 5074

Answer:

10,148

Explanation:

b) Microwaves, Visible light, X rays, Gamma rays

The base used in deodorants is magnesium hydroxide. This is further explained below. Option B is correct.

Generally, A base is a chemical that reacts with hydrogen ions to neutralize an acid, a base ranges from 7-14 in the pH range

In conclusion, In deodorants, magnesium hydroxide is utilized as a base. The function of the base is to neutralize the acid released in our mouth by bacteria, which causes tooth decay and other associated problems.

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Answer:

C. magnesium hydroxide

Explanation:

Edge

V1.M1=V2.M2

V1 x 0.59 = 0.91 x 2.45

V1=3.78 L

#1

#2

#3

#4

Benzilic acid will only precipitate in acidic solution to remove excess acid and restore equilibrium.

Chemical equilibrium refers to a state in which the rate at which reactant molecules combine to form products is equal to the rate at which products dissociate to form reactants.

For a reaction in equilibrium, any change to distort the equilibrium will cause equilibrium to shift to counter that change.

The components of Benzilic acid exist in equilibrium and will only precipitate in acidic solution because more acid has been added and equilibrium will shift to removal of excess acids.

Therefore, benzilic acid only precipitate in acidic solution in order to remove excess acid and restore equilibrium.

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Answer:

4 mol MgO

Explanation:

convert the limiting reactant to product by using dimensional analysis in order to see how many moles total can be created of the product

4 mol Mg x [tex]\frac{2 mol MgO}{2 mol Mg}[/tex] = 4 mol MgO

Answer:

I think its D.!!

Explanation:

Taking into account the definition of dilution, 83.3 mL of 0.0833 Lof 12 molar hydrochloric acid would be needed to create 1 L of a 1 molar solution of hydrochloric acid.

When it is desired to prepare a less concentrated solution from a more concentrated one, it is called dilution.

Dilution is the process of reducing the concentration of solute in solution, which is accomplished by simply adding more solvent to the solution at the same amount of solute.

In a dilution the amount of solute does not change, but as more solvent is added, the concentration of the solute decreases, as the volume (and weight) of the solution increases.

A dilution is mathematically expressed as:

Ci×Vi = Cf×Vf

where

In this case, you know:

Replacing in the definition of dilution:

12 M× Vi= 1 M× 1 L

Solving:

(1 M× 1 L)÷ 12 M= Vi

0.0833 L= 83.3 mL= Vi (being 1 L= 1000 mL)

In summary, 83.3 mL of 0.0833 Lof 12 molar hydrochloric acid would be needed to create 1 L of a 1 molar solution of hydrochloric acid.

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Answer:

They would be different.

Explanation:

As the finches evolved and moved away from their primary island, they would differentiate and change their species slightly. Maybe color of=r beak shape.

Answer:

Hello! your answer is A,C, and D!

Explanation:

These are things only females would do/have, I hope I helped and good luck!

Have a wonderful day/night!

The blank space in the task statement should be filled with 25 as methane can retain 25 times more heat than carbon dioxide.

Methane, carbon dioxide amongst other gases are important greenhouse gases which allows the Earth retain it's heat in order for it to be habitable.

Methane can retain and release about 25 times more heat than Carbon Dioxide although Methane emissions are lower compared to Carbon Dioxide.

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Answer: Oxide

Explanation:

Answer:

[tex]\huge\underline{\red{A}\blue{n}\pink{s}\purple{w}\orange{e}\green{r} -}[/tex]

before looking at what the question says ,

let's have some general information related to the topic of the question !

__________________________

[tex]\implies \: [/tex] Electric field refers to the force generated by a nearby charge in the surroundings.

__________________________

[tex]\implies \: [/tex] Mathematically ,

Electric field = [tex]\frac{Kq}{r^{2}} \\[/tex]

where ,

K = coulomb's constant

q = magnitude of charge

r = distance between the opposite terminals

___________________________

[tex]\implies \: [/tex] Dipole moment , P = 2qd

where ,

q = magnitude of charges

d = distance between the charges

___________________________

[tex]\implies \: [/tex] positive charge tends to throw the field away from it while negative charge tends to pull the field towards it !

_____________________________________

seems like enough of information , so now let's look at the derivation !

refer the attachments in order to see the derivation !

Final answer -

[tex]\bold\pink{E = \frac{2kp}{(x {}^{2} - d {}^{2} ) {}^{2} } } \\ [/tex]

while , for a short dipole

[tex]\bold\pink{E = \frac{2pk}{x {}^{3} }} \\ [/tex]

hope helpful :D

The activating groups are; -NH2, -NR2 > -OH, -OR> -NHCOR> -CH3. while the deactivating groups are;  -NO2, -CF3> -COR, -CO2R, -SO3H > Halogens.

Owing to the  unusual stability of the benzene ring, it does not undergo  addition like other unsaturated species, rather benzene does undergo electrophillic substitution.

The substituent groups determine whether the molecule will be activated or deactivated towards electrophilic substitution, the following groups decativate benzene towards electrophilic substitution; -NO2, -CF3> -COR, -CO2R, -SO3H > Halogens. The following groups activate benzene ring towrads electrophilic substitution; -NH2, -NR2 > -OH, -OR> -NHCOR> -CH3.

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Answer:

Dynamic equilibrium only occurs in reversible reactions, and it’s when the rate of the forward reaction is equal to the rate of the reverse reaction.

Explanation:

Does this answer your question?

Explanation:

The barium – 137 cation would have 56 protons, 54 electrons and 81 neutrons.

Electromagnetic waves such as radio waves are used in information transmission either as digital or analogy signals.

Electromagnetic waves are waves which are produced from the interactionof the electric and magnetic fields.

Transmitting data at lower frequencies enables the waves to travel longer distances than at higher frequencies, therefore scientists usually transmit data at a lower frequencies.

The limitations of transmitting information using electromagnetic waves include a limited number of broadcast frequencies and interference of waves.

Analog signals differ from digital signals in that analog signals have continuous electrical signals while digital signals have non-continuous electrical signals.

Digital signals over analog signals is that it transmits more information per second than analog signals Analog and digital signals are employed in mobile devices, television, radio, computers and the internet

A radio telescope is used to receive radio waves from astronomical radio sources in space.

It has several parts such as a dish and antenna,a receiver,a detector and an analyzer. The dish collects and focuses radio signals on the antenna and the information is processed by the receiver, detector and analyzer.

Radios waves are used for the transmission of radio and television signals.

Radio telescopes convert radio waves which are analog signals to electrical signals wgich are digital siagnals because it can be easily stored and transmitted in digital form.

Therefore, electromagnetic waves such as radio waves are used in information transmission.

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Answer:

5.1 | B | 3.2 kg

Explanation:

Answer:

B. A mixture has different properties throughout; a pure substance has the same properties throughout

Explanation:

Which of the following best describes the difference between a mixture and a pure substance?

A. A mixture has the same properties throughout; a pure substance has the different properties throughout.

B. A mixture has different properties throughout; a pure substance has the same properties throughout.

C. A mixture is made up of more than one type of atom; a pure substance is made up of only one type of atom. ✓

D. A mixture is made up of only one type of atom; a pure substance is made up of more than one type of atom.

Method 1: gravimetry

advantages: Impurities in the sample can be identified

disadvantages: The process is long, because it goes through several stages

Method 2: titration

advantages: the process is fast, because the titrate and titrant react immediately

disadvantages: Sometimes the determination of the end point of the titration is carried out too fast or too slowly so that the calculations carried out are inaccurate

D. A sour liquid that forms gas bubblee when mixed with copper

Answer:

Explanation:

0.20/4 = 0.05 for arsenic trichloide.

0.25/6 = 0.04 for water.

This means that water is the limiting reactant.

Answer: D

Explanation:

This is just a definition.