Pls helpppp me if you cannn

Answer:

Explanation:

D is the answer

Each kind of atom has a characteristic difference in energy levels for electrons, this property accounts for the fact that atoms can be identified by an examination, therefore the correct answer is option D.

It is the process of emission of electrons from the material because of absorption of electromagnetic radiation in form of photons of light waves.

The photoelectric effect explains the particle behavior of the light waves.

Each kind of atom has a characteristic difference in energy levels for electrons this fact can be used to identify the different atoms by using inspection.

Thus, the correct answer is option D.

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Answer: This makes the lemonade a homogenous mixture

Explanation:

If the freshly squeezed lemonade is made by squeezing lemons to extract the sour juice and mixing this with water and sugar all the substances in the mixture finally created are in the same phase.

Answer:

Water separates the two reactants into two layers, stopping the reaction.

Explanation:

Maleic anhydride can and will react with water.

The reaction between maleic anhydride and anthracene is a Diels Alder reaction. This type of reaction is a cycloaddition reaction.

The Diels Alder reaction is a member of a class of reactions called cycloadditions. This reaction involves three pi bonds, two from the diene and one from the dienophile in a concerted reaction to give a six-membered ring.

Since this reaction involves four pi electrons in the diene and two pi electrons from the dienophile, it is sometimes referred to as a 4+2 cycloaddition.

The presence of electron donating groups on the diene and the electron withdrawing groups on the dienophile favors normal Diels Alder reactions. The reaction involves the formation of new σ bonds which are energetically more stable than π bonds.

Anthracene can react with water, breaking the center ring. Maleic anhydride can react with water, opening its ring. The reactants get seperated into two layers by water and thereby stops the reaction.

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Answer:

Explanation:

Electron Configurations

A B

Fluorine 1s2 2s2 2p5

Neon 1s2 2s2 2p6

Sodium 1s2 2s2 2p6 3s1

Magnesium 1s2 2s2 2p6 3s2

H = mc∆T

H = 23g * 4.2J/g°C *(100°C - 0°C)

H = 9660 J

H = 9.66 KJ.

The energy released is 9.66 KJ.

Answer:

what do you need help with?

Explanation:

Answer:

Hello brainly user! You did not provide a question for us to help you with! In order for someone to help you, you need to provide the question you are in need of help for. What's your question?

Answer:

Scientific Law

Explanation: Earth will ALWAYS attract objects to the center of itself because of gravity. This will never be disproven.

am not sure

Explanation:

1T

2T

3T

4F

5F

6F

7F

8T

9T

10T

Answer:

B

Explanation:

i don't know minerals a good for the body

Answer:

I think the answer is yellow or White

Explanation:

because it is the visible light that I know

mask me as brainless

thanks

Answer:

[tex]N2[/tex]

Explanation:

Because  

Molecular nitrogen (N2) is a very common chemical compound in which two nitrogen atoms are tightly bound together.

The element belongs to group 17 of the periodic table.

In the periodic table, elements are arranged in groups depending on their properties. Usually, elements whose atoms have the same number of valence electrons are placed in the same group.

All the elements in group 17 have seven electrons on their outermost shell. Since an ionization energies of the electrons on the valence shell of an atom are always close together, the ionization energies of the seven electrons as shown indicate that they must be on the same shell.

Hence, the new element must be a member of group 17 of the periodic table.

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Based on the trend of electronegativities values of the elements Be, Mg, Ca, and, Sr within their group (increasing from bottom to top), the atoms of the element Sr will have the least attraction for an electron.  

We need to remember that electronegativity indicates the affinity or attraction of an element for an electron. Hence, the higher the electronegativity, the higher the attraction of that element for an electron.  

The values of electronegativities of the given elements are the following:

Be = 1.57

Mg = 1.31

Ca = 1.0

Sr = 0.95

We can see that the increasing trend of electronegativities in this group is from the bottom to the top, having the Sr with the lowest electronegativity value and the Be with the highest.  

This trend is related to atomic size, the larger the atomic size, the lower the electronegativity because the electron in the outermost shell will feel less attraction towards the nucleus of an atom. In a group of the periodic table, the size of an atom will increase from top to bottom.          

Therefore, according to the said above, the atoms of the Sr will have the least attraction for an electron (it has the lower electronegativity value).

Find more about electronegativity here:

I hope it helps you!

Answer:

D

Explanation:

the fewest electrons possible (looking for brainliest)

Answer:d

Explanation:

At 20°c, a 0.376 m aqueous solution of ammonium chloride has a density of 1.0045 g/ml. The mass percent of the ammonium chloride in the solution is 2.003%.

The number of moles of a substance can be estimated as:

[tex]\mathbf{number\ of\ moles = \dfrac{mass}{molar \ mass}}[/tex]

Given that:

Mass = number of moles × molar mass

Mass = 0.376 × 53.50

Mass = 20.116 grams

In one mL of ammonium chloride; the grams of ammonium chloride is:

[tex]\mathbf{= \dfrac{20.116 \ grams}{1000 \ mL}}[/tex]

= 0.020116 g/mL

The mass of ammonium chloride in the solution can be computed as:

[tex]\mathbf{=(\dfrac{mass \ of \ NH_4Cl}{density \ of \ the \ solution})\times 100}[/tex]

[tex]\mathbf{=(\dfrac{0.020116 }{1.0045})\times 100}[/tex]

= 2.003%

Therefore, we can conclude that the mass percent of the ammonium chloride in the solution is 2.003%.

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1. No, it doesn't.

2. 4 Hydrogen atoms are on the reactants side and 2 hydrogen atoms on products side.

3. Because the mass of reactants is not equal to the mass of the products thus it doesn't follow the law of conservation of matter.

But on balancing the eqn,

CH4 + 2O2 > CO2 + 2H2O

The above eqn will follow the law of conservation of matter because the mass of reactants is equal to the mass of products.

Answer:

White-Blue-Red-Yellow-Orange

Explanation:

The sun emits all colors of the rainbow more or less evenly.

⚠️ I'm not 100% sure but for sure there is White ⚠️

Answer:

,

Explanation:

Answer:

An atom is the smallest partical in the universe that makes up everything you see around you. Every chemical element is also made up of atoms. Since atoms are what give each element their defining characteristics, each element can be composed of multiple atoms but you must have all of the same type of atoms combined in order for it to be considered an element. For example the element gold can only contain gold atoms. If you mix the atoms of one element with the atoms of another your substance has then been changed from an element to a compound.

Explanation:

Answer:

formula unit

Explanation:

formula unit represents the simplest ratio of elements.

Answer:

an article or substance that is manufactured or refined for sale. or a thing or person that is the result of an action or process.

Explanation:

Answer:

product is the item offered for sale. A product can be a service or an item. It can be physical or in virtual or cyber form. Every product is made at a cost and each is sold at a price. The price that can be charged depends on the market, the quality, the marketing and the segment that is targeted.

Answer:

beryllium chloride

Explanation:

Therefore a compound made from beryllium and chlorine will be named beryllium chloride.

Answer:

An equal force acts in the opposite direction.

Explanation:

Answer:

Mostly Kinetic

Explanation:

Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question

mass = 992 g

volume = 1000 mL

We have

[tex]density = \frac{992}{1000} \\ = 0.992[/tex]

We have the final answer as

Hope this helps you

Answer:

yo te puedo ayudar

tu solo di cuando donde

Explanation:

Answer:

i dont care to you

Explanation:

cause you are tuyo

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100

Explanation:

A. putting a piece of soft iron in an outlet