Use the reaction and bond information to answer the question. Is this system endothermic or exothermic, and why? Reactant bond energies:

High-energy matter consisting of positively and negatively charged particles is Plasma.

Plasma is high - energy matter consist of positively particles and negatively charged particles. This is the most common state of matter that is plasma state. Matter consisting negatively charged particles and positively charged particles and overall charge is neutral . Particles have high energy that when collide, electrons knocked loose from atom and forming positive ion and negative ion. particles are moving very fast in plasma state. Examples of plasma are stars, neon tubes , lightening bolts, fluorescent lights, fire.

Thus,   High-energy matter consisting of positively and negatively charged particles is Plasma.

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Answer:

A bee sting has a ph of 5, and is therefore an acid. Litmus paper goes red (or stays red) in acidic solutions.

Answer:

The Blue Litmus Paper should turn red

Explanation:

Bee venom has a pH of 5.5, which means it is mildly acidic which in turn should make the Litmus paper turn Red. Hope this helps!

\(\sf\huge\underline\purple{Ozone\: Gas:-}\)

\(\rightarrow\)Ozone is an allotropic molecular form of oxygen containing three atoms of oxygen (O3). Ozone O3 is generated through the passage of oxygen O2 through a high voltage potential resulting in the attachment and formation of a third oxygen atom.

\(\rightarrow\)The molecular formula for ozone (O3) was established by Soret (1863) by taking the ratio of the change in volumes when O3/O2 mixtures were either heated or exposed to turpentine and cinnamon oil.

\(\rightarrow\)Ozone is formed when heat and sunlight cause chemical reactions between oxides of nitrogen (NOX ) and Volatile Organic Compounds (VOC), which are also known as Hydrocarbons. This reaction can occur both near the ground and high in the atmosphere.

__________________________________

Hope it helps you:)

Answer:

The cation is written first in the name; the anion is written second in the name. Rule 2. When the formula unit contains two or more of the same polyatomic ion, that ion is written in parentheses with the subscript written outside the parentheses.

When writing the formula of a compound that contains polyatomic ion, the metal is written first followed by the central atom in the ion and then other atoms that surround the central atom.

A poly atomic ion refers to an ion that comprises of more than one atom. Such ions are common in chemistry. Examples of polyatomic ions include; PO4^3-, BH4^- etc.

When writing the formula of a compound that contains a polyatomic ion, the metal is written first then the central atom in the ion follows before other atoms that surround the central atom in the ion.

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Vertical and horizontal movement caused by the expansion of freezing water are called as frost heaving and frost thrusting.

These phenomena occur when water within the soil or porous materials freezes, causing it to expand and exert pressure on its surroundings.

Frost heaving refers to the upward movement of the ground or other materials due to the expansion of freezing water. When water freezes, it forms ice crystals that push and lift the soil or material above it. This upward movement can result in the displacement of rocks, pavement, or structures. Frost heaving is commonly observed in regions with freezing temperatures and moisture in the ground.

Frost thrusting, on the other hand, involves the horizontal movement of objects or structures caused by the expansion of freezing water. When water freezes and expands, it exerts pressure against barriers or structures in its path, causing them to shift horizontally. This can lead to the displacement of objects, damage to underground utilities, or deformation of structures.

Both frost heaving and frost thrusting can have significant impacts on infrastructure, including roads, buildings, and pipelines. The expansion of freezing water can exert considerable force, leading to the deformation, cracking, or destruction of materials. These processes are particularly prevalent in areas with fluctuating freeze thaw cycles, where the repeated formation and melting of ice can exacerbate the movement.

To mitigate the effects of frost heaving and frost thrusting, various engineering techniques can be employed. These may include proper insulation of structures, installation of frost barriers or insulation layers in the ground, and the use of flexible or frost-resistant materials in construction. By understanding these processes and implementing appropriate measures, it is possible to minimize the adverse impacts of freezing water expansion on infrastructure and maintain the stability of the surrounding environment.

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Answer:

A. 7

(assuming the water is neutral)

When there is excess glucose and amino acids in the liver, and no more ATP needs to be synthesized, these energy-rich nutrients are converted to glycogen and fatty acids.

Both glycogen and fatty acids are forms of energy storage molecules.

What happens to excess glucose in the liver?

Excess glucose in the liver is stored as glycogen. When the body requires glucose for energy, glycogen is broken down to glucose in a process known as glycogenolysis.

Gluconeogenesis is the process by which glucose is generated from non-carbohydrate sources, such as amino acids and fatty acids.

When there is an excess of amino acids, the liver transforms them into glucose or fat as well. The body can use glucose and fat for energy or store it in adipose tissue for later use. Fatty acids are synthesized from acetyl-CoA units, which can be derived from both glucose and amino acids.

The liver is capable of maintaining glucose homeostasis in the body. It is capable of releasing glucose into the bloodstream, maintaining glucose levels at a stable level in the body when necessary.

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Answer:

I think it is C

Explanation:

We have that the reaction and a decrease in the concentration of the reactants will favor the reverse reaction that is the decomposition of the yellow iodine trichloride and the formation of green chlorine gas and brown iodine chloride

Given that some green chlorine gas, which is part of the reactant, will be removed, the reverse reaction will be favored and initial concentration of the yellow iodine trichloride and the green chlorine gas will be reduced while the proportional concentration of the brown iodine chloride will increase and the mixture will become more brown.

Answer:

d because you don't like math or any subject

Jackson's successor, President Martin Van Buren, viewed Texas annexation as an immense political liability that would empower the anti-slavery northern Whig opposition – especially if annexation provoked a war with Mexico.

A mixture of gases consists of the helium at the partial pressure of 400 torr, neon at the partial pressure of 300 torr, and argon at the partial pressure of 200 torr. The total pressure of the mixture of gases is 900 torr.

The partial pressure of the helium = 400 torr

The partial pressure of the neon = 300 torr

The partial pressure of the argon = 200 torr

The Dalton’s law of the partial pressures is the gas law that states that the total pressure exerted by the mixture of the gases is equal to the sum of the partial pressures that is exerted by the each individual gas present in the mixture.  

The total pressure = partial pressure of helium + partial pressure of neon + partial pressure of the argon

The total pressure = 400 torr + 300 torr + 200 torr

The total pressure = 900 torr

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I need more points sorry

Answer:

\(\boxed {\boxed {\sf 17.3 \ L \ F_2}}\)

Explanation:

First, we must convert molecules to moles.

We use Avogadro's Number: 6.022*10²³. This number tells us the amount of particles (atoms, molecules, etc.) in 1 mole of a substance. In this case, it is molecules of F₂

\(\frac{ 6.022*10^{23} \ molecules \ F_2}{1 \ mol \ F_2}\)

Multiply by the given number of molecules.

\(4.65 *10^{23} \ molecules \ F_2*\frac{ 6.022*10^{23} \ molecules \ F_2}{1 \ mol \ F_2}\)

Flip the fraction so the molecules of fluorine cancel.

\(4.65 *10^{23} \ molecules \ F_2*\frac{1 \ mol \ F_2 }{6.022*10^{23} \ molecules \ F_2}\)

\(4.65 *10^{23} *\frac{1 \ mol \ F_2 }{6.022*10^{23} }\)

\(\frac{4.65 *10^{23} \ mol \ F_2 }{6.022*10^{23} }=0.7721687147 \ mol \ F_2\)

Next, convert the moles to liters. Assuming this is at STP (standard temperature and pressure), there are 22.4 liters in 1 mole of any gas.

\(\frac {22.4 \ L \ F_2} {1 \ mol \ F_2}\)

Multiply by the number of moles we calculated.

\(0.7721687147 \ mol \ F_2*\frac {22.4 \ L \ F_2} {1 \ mol \ F_2}\)

The moles of fluorine cancel.

\(0.7721687147 *\frac {22.4 \ L \ F_2} {1 }\)

\(0.7721687147 *\ {22.4 \ L \ F_2} =17.29657921 \ L \ F_2\)

The original measurement has 3 significant figures (4, 6, and 5), so our answer must have the same. For the number we calculated, that is the tenth place. The 9 in the hundredth place tells us to round the 2 up to a 3.

\(17.3 \ L \ F_2\)

There are approximately 17.3 liters of fluorine.

The law of mass action is a fundamental principle in chemistry that relates the concentrations of reactants and products in a chemical reaction to the rate of that reaction.

It states that the rate of a chemical reaction is proportional to the product of the concentrations of the reactants, with each concentration raised to a power equal to its stoichiometric coefficient in the balanced chemical equation for the reaction.

For a chemical reaction of the form:

aA + bB ⇌ cC + dD

where A, B, C, and D are the chemical species involved in the reaction, the law of mass action can be expressed as follows:

rate = k [A]²a [B]²b

where k is the rate constant for the reaction, [A] and [B] are the concentrations of the reactants A and B, respectively, and a and b are their stoichiometric coefficients in the balanced chemical equation.

Assuming that both [A] and [B] are kept at constant concentrations, the equation reduces to:

rate = k [A]²a [B]²b = k [A]²a [B]_0²b

where [B]_0 is the initial concentration of B.

Now, let's define x as the concentration of A that has reacted (i.e., the concentration of A that has been consumed in the reaction). Since the reaction is stoichiometrically balanced, we know that the concentration of B that has reacted is b*x/a. Therefore, the concentration of A and B at any given time can be expressed as follows:

[A] = [A]_0 - x

[B] = [B]_0 - b*x/a

Substituting these expressions into the rate equation, we get:

rate = k ([A]_0 - x)²a ([B]_0 - b*x/a)²b

Expanding this expression using the binomial theorem and simplifying, we get:

rate = k [A]_0²a [B]_0²b (1 - ax/[A]_0)²(a-1) (1 - bx/[B]_0)²(b-1)

At low concentrations of x, we can approximate the terms in parentheses using their first-order Taylor series expansions:

(1 - a*x/[A]_0)²(a-1) ≈ 1 - (a-1)*x/[A]_0

(1 - b*x/[B]_0)²(b-1) ≈ 1 - (b-1)*x/[B]_0

Substituting these approximations into the rate equation, we get:

rate ≈ k [A]_0²a [B]_0²b (1 - ax/[A]_0) (1 - bx/[B]_0)

Expanding and simplifying, we get:

rate ≈ k [A]_0²a [B]_0²b - k [A]_0²a [B]_0²b (a/b)x + k [A]_0²a [B]_0²b (a/b)(a-1)/2 * x²2

This is an equation of the form:

rate = A - Bx + Cx²2

where A, B, and C are constants that depend on the reaction conditions. This equation describes a quadratic relationship between the rate of the reaction and the concentration of A that has reacted (i.e., the extent of the reaction).

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Answer:

wat dose dis du

Explanation:

u to frend lit me now if yu need help with yur math and english homewirk. me got anser 2 evryting

IMPORTANCE:

Water is very important. Whether it's from washing your dishes to hydrating, to simply just watering your flowers, water is important.

Washing Dishes

When you eat, after you eat, you wanna clean your dish. You're not gonna keep it dirty, you're going to have to wash it. Soap and water are often used when washing dishes. It's the best way to get it cleaned.

Hydration

Drinking water can have many benefits. It can make you more productive, you can even lose weight, no migraines, and it can boost your metabolism.

Watering Flowers

It's helpful to water plants because watering them on a basis/routine can help them gain nutrients. No watering the plant can result the plant drooping down and for it to become droopy and dry.

Atoms are smallest particle of any entity; Atoms consist of three fundamental types of particles, protons, electrons and neutrons. Option C & D are the correct statement.

Define an atom?

Atoms are the smallest particle of an element. Atoms cannot be broken into sub parts. It consisting of 3 particles like, protons, electrons and neutrons.

Atoms of the all substance do not have same chemical properties. Because, atoms have different number of proton and electrons. Atoms cannot be destroyed by heating or cooling. Smallest unit atoms have elemental chemical identity and atoms can combine to make all the substance on earth.

Therefore, statement C and D are correct.

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The statement that correctly describes atoms are:

c. Atoms are the smallest unit of an element that has the chemical identity of that element.

d. Atoms combine to make all the substances on Earth.

The tiniest component of an element is called an atom. Atoms are not divisible into smaller components. It is made up of three different particles: protons, electrons, and neutrons.

All atoms do not share the same chemical characteristics. Because the quantity of protons and electrons in each atom varies. No amount of heat or cold can kill an atom.

Therefore, the correct option is c and d.

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Answer:

The three compounds are different compounds

Explanation:

The mass of Nitrogen that combines with 1 gram of Oxygen in  Compound A = 1.750 g

The mass of Nitrogen that combines with 1 gram of Oxygen in  Compound B  = 0.8750 g

The mass of Nitrogen that combines with 1 gram of Oxygen in  Compound C  = 0.4375 g

According to the law of multiple proportions, when atoms of two different elements react to form compounds, the masses of one of the elements that combines with a fixed mass of the other element are in small whole number ratios.

The ratio of the masses are;

Mass of Nitrogen in Compound B/(Mass of Nitrogen in Compound C =  0.8750/0.4375 = 2

Mass of Nitrogen in Compound A/(Mass of Nitrogen in Compound C =  1.750/0.4375= 4

Mass of Nitrogen in Compound A/(Mass of Nitrogen in Compound B =  1.750/0.8750= 2

Given that the masses of Nitrogen in the three compounds are in small whole number ratios, the three compounds, Compound A, Compound B, and Compound C are different compounds.

The approximate balance in the account at the end of 6 years is $159,074. Rounded to the nearest dollar, it is $159,074.

Assuming that the annual rate of $20,000 is deposited at the beginning of each year, the total amount deposited over 6 years would be $120,000. With continuous compounding at 5% interest rate, the formula to calculate the balance in the account after 6 years is:
A = Pe^(rt)
Where A is the balance, P is the principal (amount deposited), e is the mathematical constant approximately equal to 2.71828, r is the interest rate in decimal form, and t is the time in years.
Plugging in the values, we get:
A = $120,000e^(0.05*6)
A = $159,073.51
Therefore, the approximate balance in the account at the end of 6 years is $159,074. Rounded to the nearest dollar, it is $159,074.

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Answer:

c

Explanation:

the rest are chemical properties

The statement, "During fermentation, sugars are converted into ethanol and carbon dioxide by yeast through the process of anaerobic respiration" is true.

The given statement is true because during fermentation, sugars such as glucose or sucrose are broken down by yeast in the absence of oxygen. This process is a form of anaerobic respiration, where yeast converts the sugars into ethanol (alcohol) and carbon dioxide.

Yeast, a type of microorganism, carries out fermentation as a way to produce energy without the need for oxygen. The process begins when yeast cells take in sugars from their environment. Enzymes within the yeast cells then break down the sugars into smaller molecules, such as pyruvate, through a series of chemical reactions.

In the absence of oxygen, yeast undergoes a metabolic pathway known as fermentation. In alcoholic fermentation, one type of fermentation carried out by yeast, the pyruvate molecules are further converted into ethanol and carbon dioxide. This conversion is facilitated by specific enzymes produced by the yeast.

The ethanol produced during fermentation is responsible for the alcoholic content in various beverages, such as beer, wine, and spirits. The carbon dioxide gas produced is released as a byproduct, creating bubbles in fermented beverages and contributing to the characteristic texture and flavor.

Overall, during fermentation, yeast metabolizes sugars and converts them into ethanol and carbon dioxide. This process is utilized in various industries, including brewing, winemaking, and baking, to produce a wide range of products.

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The gas in the tank has a final temperature of roughly 480.5 K.

Gas molecules interacting with an object's surface generate force, which is what creates gas pressure. Although though there is very little force involved in each impact, any surface with a sizeable area is subject to many of them quickly, which can lead to a high pressure.

As per the ideal gas law,

PV = nRT

We can write: Provided that the volume and quantity of moles of gas remain constant.

P1/T1 = P2/T2

where the initial pressure and temperature are P1 and T1, and the ultimate pressure and temperature are P2 and T2.

With the values provided, we have:

P1 = 7.571 atm

T1 = 283.2 K

P2 = 12.846 atm

We can solve for T2:

T2 = (P2/P1) * T1

= (12.846 atm / 7.571 atm) * 283.2 K

= 480.5 K

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Answer:

Circulatory System

Explanation:

Blood carries oxygen to the rest of the body, as well as glucose.

Answer:

70kg

Explanation:

The enthalpy change (ΔH) for the physical change of Br2 from the gas phase to the gas phase (Br2(g) → Br2(g)) is zero. The entropy change (ΔS) for this physical change is also zero.

In a physical change, the chemical substance remains the same, and there is no breaking or forming of chemical bonds. In the case of Br2 going from the gas phase to the gas phase, there is no change in the chemical identity or composition of the substance.

The enthalpy change (ΔH) measures the heat energy transfer during a reaction or process. Since there is no change in the chemical bonds or composition of Br2 in this physical change, there is no transfer of heat energy, and thus ΔH is zero.

The entropy change (ΔS) quantifies the degree of disorder or randomness in a system. In this physical change, the arrangement and distribution of Br2 molecules remain unchanged, leading to no change in entropy. Therefore, ΔS is also zero.

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Answer

In summary

A number of properties of liquids, such as cohesion and adhesion, are influenced by the intermolecular forces within the liquid itself. Cohesion are various intermolecular forces that hold solids and liquids together while adhesion is the ability of a liquids to stick to an unlike substance. The rise or fall of a liquid in a capillary tube is governed by the balance of cohesive and adhesive forces. Lastly, surface tension is a fundamental property of the surface of liquid, it is responsible for the curvature of the surfaces of liquids dues to the polarity that exists in the liquid molecules.

Explanation

Liquids flow because the intermolecular forces between molecules are weak enough to allow the molecules to move around relative to one another. The forces are attractive when a negative charge interacts with a nearby positive charge and repulsive when the neighboring charges are the same, either both positive or both negative. Molecules are held together by polar covalent bonds – which means that the electrons are not evenly distributed between the bonded atoms. This uneven distribution in the covalent bonds of the molecules results in a partial charge.

The liquid molecules don’t interact particularly strongly with each other because the intermolecular forces are weak. The primary intermolecular forces – are London dispersion forces, which for small molecules are the weakest types of intermolecular forces. These weak forces lead to low cohesion. The molecules don’t interact strongly with each other, so they can slide right past one another.

Adhesion is the tendency of a compound to interact with another compound. (Remember that, in contrast, cohesion is the tendency of a compound to interact with itself.) Adhesion helps explain how liquids interact with their containers and with other liquids. One example of an interaction with high adhesion is that between water and glass. Both water and glass are held together by polar bonds. Therefore, the two materials can also form favorable polar interactions with each other, leading to high adhesion.

Answer:

a

Explanation:

Answer:

Gain 3 electrons.

Explanation:

If element X have 5 valence electrons it will more than likely gain 3 electrons to fill its octet to become stable. Gaining the 3 electrons is much easier for the atom than if it were to give away it's 5 valence electrons. Elements with 5 valence electrons that could represent element X are:

The structures of the two enantiomers of (R)-5,5-dibromo-3-fluoro-2-methyl-3-hexanol can be drawn with the stereochemistry indicated by wedge-and-dash bonds.

The structures of the two enantiomers of (R)-5,5-dibromo-3-fluoro-2-methyl-3-hexanol can be drawn as follows (image attached):

In each structure, the stereochemistry is indicated by the wedge-and-dash bonds. The dashed bonds indicate groups that are oriented away from the viewer, while the wedged bonds indicate groups that are oriented towards the viewer. The stereochemistry at the stereocenter (marked with an asterisk) is opposite in the two enantiomers, as indicated by the positions of the bromine and fluorine substituents.

The two enantiomers differ in the orientation of the bromine and fluorine substituents at the stereocenter. (R)-5,5-dibromo-3-fluoro-2-methyl-3-hexanol is a chiral compound that exists in two enantiomeric forms, which are non-superimposable mirror images of each other. The prefix (R) indicates that the molecule has a clockwise arrangement of substituents around the stereocenter, according to the Cahn-Ingold-Prelog priority rules.

The molecule has a total of three chiral centers, located at the third, fourth, and fifth carbon atoms from the hydroxyl group. The stereochemistry of each chiral center is specified by the prefixes (R) or (S), depending on the arrangement of substituents.

The compound is a derivative of hexanol, which is a six-carbon alcohol. The presence of bromine and fluorine substituents on the molecule makes it a useful starting material for the synthesis of other organic compounds, such as complex natural products and pharmaceuticals.

The complete question is

A pair of theoretical enantiomers is named below. For each stereoisomer, draw the structure. Specify the stereochemistry via wedge-and-dash bonds:

(R)-5,5-dibromo-3-fluoro-2-methyl-3-hexanol

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This is because convection is energy transfer by currents of moving liquid or gas.

Heat transfer by convection is the transfer of heat from one place to another due to the movement of fluid.

When cooking in a convection oven, for best results you place your food in the center of the oven, this is because convection is energy transfer by currents of moving liquid or gas.

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This is because convection is a type of energy transfer by currents of moving liquid or gas (Option A).

Convection is a physical natural phenomenon associated with energy transfer through a fluid.

In convection, a suitable fluid that produces what transfer can be for example air and/or water.

In conclusion, this is because convection is energy transfer by currents of moving liquid or gas (Option A).

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Answer:

177.3kg C₂₁H₄₄

Explanation:

Based on the chemical reaction:

C₂₁H₄₄ → 3C₂H₄ + C₁₅H₃₂

Where 1 mole of C₂₁H₄₄ produce 3 moles of ethene, C₂H₄.

To solve this question we need to determine the moles of ethene in 50.4kg. 1/3 these moles are the moles of C₂₁H₄₄ that must be added:

Moles Ethene -Molar mass: 28.05g/mol-

50.4kg = 50400g * (1mol / 28.05g) = 1796.8 moles of ethene

Moles C₂₁H₄₄:

1796.8 moles of ethene * (1 mol C₂₁H₄₄ / 3 mol C₂H₄) = 589.93 moles C₂₁H₄₄

Mass C₂₁H₄₄:

589.93 moles C₂₁H₄₄ * (296g / mol) = 177283g =

Answer:  " 13.5 g Al " ;

                    →  that is:  "13.5 grams of aluminum."

____________________________

Explanation:

____________________________

Note: What is missing from the question is the "balanced chemical equation" for the "chemical reaction" that contains:

 The reactants:  "aluminum (Al) " ;  and "chlorine (Cl) " ;  and:

 The product:    "aluminum choloride (AlCl₃) " .

____________________________

The "balanced chemical equation" is:

____________________________

        2 Al   +   3 Cl₂   →   2 AlCl₃   ;

_____________________________

Note: The molecular weight of "aluminum (Al)" is:   " 26.98 g /mol " .

____________________________

So:  We call solve using a technique known as:  "dimensional analysis" :

____________________________

  0.500 mol AlCl₃ * \((\frac{2mol Al}{2mol AlCl_{3} }) * (\frac{26.98g Al}{1 mol Al}) = ?\)

____________________________

Note:  The units of "mol AlCl₃" cancel out to "1' ; and:

          The  units of "mol Al" cancel out to "1" ; and we are left with:

____________________________

 " \(\frac{(0.500 * 2 * 26.98)}{2}\)   g Al ["grams of aluminum"] ;

____________________________

Note: We can "cancel out the "2's" ; since "2/2 = 1 " ; and we have:

 →  (0.500 * 26.98) g Al ;

    = 13.49 g Al ;

         →  Round to 3 (Three) significant figures;

         →  Since:  "0.500" has 3 (Three) significant figures:

____________________________

   =  13.5 g Al ; that is:  "13.5 grams of aluminum."

____________________________

 Hope this is helpful!  

      Best wishes to you in your academic pursuits—and within the "Brainly" community!

____________________________