Please help! will give brainlyst to 1st answer! help ASAP!!! 30 POINTS!!!!

Tendency of the substance to travel long distances between the site of origin and target area is not a specific criterion for classify a substance as a neurotransmitter.

Neurotransmitters are the chemical messengers that are responsible for transporting chemical “messages” from one neuron to the subsequent target cell. The target cell may be a gland, muscle, or another nerve cell. Neurotransmitters are generally classified on the basis of their inhibitory or excitatory action.

Neurotransmitters plays major roles in controlling body functions like senses, breathing, heart beat, hormone regulation and blood pressure.

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The molarity of a NaOH solution is 0.273

The molarity of the NaOH solution used in the neutralization reaction has been 0.273 x [tex]10^{-3}[/tex] M.

The neutralization reaction has resulted in the formation of the salt and water on reacting an acid with a base. In the neutralization reaction, the strength of acid and base can be given as

For the neutralization of 1 mole of sulfuric acid, 2 moles of NaOH have been required.

[tex]2NaOH + H2SO4[/tex] →[tex]Na2SO4 + H2O[/tex]

The moles of sulfuric acid can be given as:

Moles = Molarity × Volume

Given, the molarity of acid (H2SO4) = 0.220 M

The volume of acid = 15.5 ml = 0.0155 L

Volume of base (NaOH) = 25 ml = 0.025 L

Moles of H2S04 = 0.220× 0.0155mol

Moles of  H2SO4 = 3.41  mol.

Since 1 mole of H2SO4  = 2 moles NaOH

3.14 moles of H2SO4 = 3.14 × 2 moles NaOH

3.14 moles of H2SO4 = 6.28 moles of NaOH.

The neutralization of 0.220 M H2SO4 requires 6.28 moles of NaOH. The strength of the NaOH solution will be:

Molarity =[tex]\frac{Moles}{Volume(L)}[/tex]

Molarity = [tex]\frac{6.28}{0.025}[/tex]

The molarity of a NaOH solution is 0.273

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The mass of khc8h4o4 that reacts with 15ml of the 0.15 m naoh solution is 0.4595 g

What is mass?

0.015 L x 0.15 M= 0.00225 mol NaOH, 0.00225 mol NaOH x 1 mol KHC8H4O4/1 mol NaOH=0.00225 KHC8H4O4, 0.00225 KHC8H4O4 x 204.23 g/mol/1 mol

KHC8H4O4=0.4595 g

Mass is a physical body's total amount of matter. Inertia, or the body's resistance to acceleration when a net force is applied, is also measured by this term. The strength of an object's gravitational pull to other bodies is also influenced by its mass. The kilogram serves as the SI's fundamental mass unit.

Therefore,

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Answer:

it's because the liquid in the bottle is supercooled

The compound X that have a Molecular molar mass of 138 g/mol is

Given here,

Compound x - 6g

malar mass of x - 138g/mol

Carbon dioxide - 13.39 g

water - 2.35g

So,

The moles of Water will be 0.13 mol

The moles of Hydrogen will be 0.26

Mass of hydrogen = 0.26 g

The moles of  CO2  will be 0.304

The moles of carbon will be 0.304

Mass of Carbon = 3.65 g

Mass of  Oxygen = Total mass of the compound - (mass of C + mass of H)

= 6.0 g - ( 3.65 + 0.262 ) g

= 2.09 g

Moles of oxygen = 0.131

Since Oxygen has the least moles, to find the molar ratio of the constituent atom, divide the moles of an atom from oxygen.

C = 0.304/0.131 = 2.8

C = 0.26/0.131 = 2

C = 0.131/0.131 = 1

convert 2.3 into a whole number

C = 2.3*3 = 7

H = 2*3 = 6

O = 1*3 = 3

Hence formula will be C7H6O3

What is molar mass?

The molar mass of a chemical compound is determined in chemistry by dividing the mass of a sample of that compound by the quantity of that compound, which is the number of moles in that sample, measured in moles. The molar mass of a substance is a bulk attribute rather than a molecular one. The compound's molar mass is an average over numerous samples, which frequently have different masses because of isotopes. A terrestrial average and a function of the relative abundance of the isotopes of the constituent atoms on Earth, the molar mass is most frequently calculated using the standard atomic weights. For converting between a substance's mass and amount in bulk amounts, the molar mass is the proper unit.

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Isomers are formed when coordination complexes with two different ligands in the cis and trans positions of a ligand of interest. The octahedral[tex][Co (NH _{3} )_{4} Cl _{2} ] ^{+}[/tex] ion, for example, has two isomers. The two chloride ligands are adjacent to each other in the cis configuration.

The isomers that coordination compounds display include many that are distinct as well as the same isomers that organic compounds display. Compounds known as isomers have distinct structural formulas but the same molecular formula and may not always have the same characteristics.

Stereoisomerism and structural isomerism are the two basic types of isomerism (spatial isomerism). Structural isomers are isomers that differ in structure or kind of bond and have the same number of atoms of each kind but differ in how those atoms are connected to one another.

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Multivitamin supplements contain minerals such as calcium, iron, gold, copper, and zinc. The statement is false.

A multivitamin is a dietary supplement that contains vitamins, dietary minerals, and other nutritional components. These medications can be purchased as tablets, capsules, pastilles, powders, liquids, or injectable formulations.

According to Wong, the main function of a multivitamin is to close nutritional gaps and ensure that people get their recommended daily intake of minerals including calcium, magnesium, dietary fibre, potassium, choline, and underconsumed vitamins A, C, D, E, and K.

Therefore, multivitamin supplements contain minerals such as calcium, iron, gold, copper, and zinc. The statement is false.

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The following equation is in balance. To create one molecule of P₄O₁₀ (a solid)., combine one molecule of P₄ (a solid) with 5 molecules of O₂ (a gas) 

The reactants and products are placed on the left and right sides of the arrow, respectively, to create a balanced equation. Coefficients, which appear as a number before a chemical formula, represent moles of a compound. The number of atoms in a single molecule is indicated by the subscripts (numbers below an atom).

For instance, think about the response: 2Mg(s)+O₂(g)⟶2MgO(g)  Two magnesium and two oxygen atoms are present in this reaction on both the reactant and product sides. As a result, the chemical reaction complies with the rule of conservation of mass, making it a balanced chemical equation.

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The element with electronic configuration xs² xp⁴ will gain 2 additional electrons resulting in the formation of an anion (negative ion), giving the element a charge of -2.

A charged atom is termed an ion and it is formed when an atom loses or gains electrons that are present in its outermost valence shell.

When an atom loses electrons, it turns into an anion and acquires a negative charge, whereas when it gains electrons, it turns into a cation and acquires a positive charge.

We now have an unknown element with the electronic setup xs² xp⁴. The electrical configuration shows that the element has four valence electrons in its outermost shell and requires two more electrons to complete its octet. As a result, the element will gain two more electrons, resulting in the formation of an anion (negative ion) with a charge of -2.

Note: Since losing four electrons is not possible, the element will gain electrons much more easily.

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Cryosphere and hydrosphere would interact.

There are five main Earth's spheres: the geosphere, the hydrosphere, the cryosphere, the biosphere and the atmosphere.

The hydrosphere is all the liquid water masses on the Earth.

The cryosphere is all the frozen water masses on the Earth.

In a high temperatures ice will turn into the liquid water and interact with each other.

The spheres interact with one other. For example, plants (biosphere) produce oxygen (atmosphere) from carbon dioxide (atmosphere).

Substances in different spheres are recycled and turned into other phases and forms. This is important cycle and without that, there is no life on Earth.

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Answer: Cryosphere and Hydrosphere

Explanation:

Cryosphere and hydrosphere would interact.

Cryosphere is the frozen water part of Earth.                                                    Hydrosphere is all the water on Earth's surface

The heat that reaches Jerron in the room from the furnance does so by radiation

The term radiation has to do with a situation in which heat is able to move from one point to another without a material medium. We know that there are three basic modes of heat transfer and these are;

Conduction and convection both require a medium of propagation while radiation does not. The heat that reaches you in the room does so by radiation and this is because there is no material medium that carries the heat from the furnace to you.

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A person consumes 2,000 cc of water each day. They should generally lose 2,000 ml of water each day.

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Option (D) helium (He) and hydrogen (H) is the right answer.

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Answer: Helium, Hydrogen

Explanation: I got it right

Conjugated diene is applied to the type of diene represented by 2,4-hexadiene.

what is conjugated diene?

A chain of hydrocarbons known as a diene contains 2 double bonds, which may or may not be close to one another. This section compares two nearby double bonds with an emphasis on the delocalization of π systems. The configurations of these double bonds can influence how reactive and stable a molecule is.

Conjugated dienes are more stable than unconjugated and cumulated dienes because a molecule is more stable when it has a higher electron density delocalized.

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The complete question is :

What descriptive term is applied to the type of diene represented by 2,4-hexadiene?

A. Cumulated diene

B. Conjugated diene

C. Alkynyl diene

D. Isolated diene

E. None of the above

The mass of the block is 20.61 grams.

d(copper metal) = 8.96 g/ml; density of a copper metal

V(copper metal) = 2.30 ml; the volume of a copper metal

m(copper metal) = d(copper metal) x V(copper metal)

m(copper metal) = 8.96 ml x 2.30 ml

m(copper metal) = 20.61 g; mass of a copper metal

Volume is the amount of space that a substance occupies.

Density is the mass of an object divided by its volume. The SI derived unit for density is the kilogram/cubic meter, but chemist usually use gram per milimeter.

Mass is a fundamental measure of the amount of matter in the object.

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Combining zinc chloride and ammonium carbonate aqueous solutions. The chemical process is shown to be balanced as;

(NH₄)2CO₃ (aq ) +  ZnCl₂ ( aq )  -------- > ZnCO₃ ( s ) + 2 NH₄Cl (aq )

In other words, the ions and molecules that make up the solute (dissolved) are surrounded by the water molecules and incorporated into their web of connections.

The kind of chemical bonds holding something together determines whether or not it will dissolve in water. Examples of watery solutions include rain, seawater, acid, base, and salt solutions.

Solutions that contain water as a solvent are known as aqueous solutions. (For instance, sugar solution).

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One jar appears be much sweeter than other

In the two jar marked with the same carbon hydrogen and oxygen content could taste so different because carbohydrates contain just carbon, hydrogen and oxygen atoms that's why in the one jar it appear much sweeter taste than other and in the carbohydrates all are connected in the particular way carbohydrates are classified into three subtypes: monosaccharides, disaccharides, and polysaccharides That's why in two jar marked with the same carbon hydrogen and oxygen content could taste different.

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Answer:

114.818 amu.x(112.9041) + (1 - x)

(114.9039) = 114.818Solving for xx=0.043 or 4.3%

Explanation:

The average atomic mass written in the periodic table is determined from the relative abundances of the element's isotopes. The equation would be:Average Atomic Mass = ∑(Relative Abundance×Mass)Let be the relative abundance of Indium-113. Because there are only 2 isotopes, their relative abundances should equal to 1, such that the relative abundance for Indium-15 is (1-x). The atomic mass of indium is 114.818 amu.x(112.9041) + (1 - x)(114.9039) = 114.818Solving for x,x = 0.043 or 4.3%

The Energy levels that has the highest amount of energy is Fourth; option D

Energy levels or electron shells are fixed distances from the nucleus of an atom of an element where electrons are most probably to be found.

The energy levels are arranged in increasing energy levels from the nucleus of the atom.

The energy levels are given integer values of n, where n = 1, 2, 3, 4, 5,..

This means that the lowest energy level is the first one closest to the nucleus also known as ground state.

Therefore, the energy level which has the highest amount of energy from the given options is the fourth energy level.

In conclusion, electrons in atoms are arranged in energy levels starting from the first energy level closest to the nucleus.

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this is an example of Identification

Technicians in forensic science work at crime scenes and in labs. Typically, forensic science technicians do the following tasks at crime scenes: Investigate crime scenes to decide what evidence needs to be gathered and how. The crime scene and the evidence should both be photographed. In forensic crime labs, forensic DNA analysts perform analyses on samples collected from crime scenes. While some forensic DNA analyzers work for privately owned forensic laboratories, the majority of them are employed by local, state, or federal law enforcement or governmental organizations. The definition of forensic analysis is a thorough procedure for identifying, looking into, and recording the cause, progression, and effects of a security incident or violation of local, state, and organizational regulations.

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The mole fraction of cesium chloride is 0.06296.

The mole fraction is the product of the number of molecules of a specific component in a mixture and its total molecular weight.

By mixing 60.0 g of water with 42.9 g of cesium chloride, a solution is created.

The volume of the solution is given as 63.3 ml.

The solute in this aqueous solution is cesium chloride. From their given masses and known molar masses, we require the moles of water and cesium chloride:

n( CaCl ) = 42.9 g × ( mol ) / ( 168.36 g )

n( CaCl ) = 0.254 mol

n( water ) = 60.0 g × ( mol ) / 18.01 g

n( water ) = 3.78 mol

Therefore, the mole fraction of cesium chloride solute will be:

( 0.254 mol ) / ( 0.254 mol + 3.78 mol ) = 0.06296

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Answer:

answer is a . because they have enough heat is given off during exothermic reaction

Answer: answer is a . because they have enough heat is given off during exothermic reaction

Explanation:

The bonds that often bind different parts of a molecule into a specific three-dimensional shape is hydrogen.

What is specific three-dimensional shape?

In geometry, a 3-dimensional form may be described as a strong parent or an item or form that has 3 dimensions—length, width, and height. Unlike two-dimensional shapes, 3-dimensional shapes have height, that is similar to thickness or depth.

The bonds that often bind different parts of a molecule into a specific three-dimensional shape out of hydrogen, amino acid, oxygen and carbon, is hydrogen.

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Isotopes are atoms with the same number of protons, but differ in numbers of neutrons.

Isotopes are elements of the same family that have the same number of protons but different numbers of neutrons. Isotopes comprise of two or more than two types of atom that have the same atomic number but different mass number due to different number of neutrons in each element.

Isotopes are the members of elements which contains the same number of protons but they have different number of neutrons.

Isotope Of Hydrogen:

There are three isotopes of hydrogen i.e. protium 11H, deuterium 21H and tritium 31H. All these isotopes have one same number of proton which is 1 but different number of neutron.

The isotopes are different because of the different number of neutrons present in them.

So we can conclude that isotopes are atoms with the same number of protons, but differ in numbers of neutrons.

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Answer:

A stable nucleus has a similar number of protons and neutrons.

Explanation:

Mitosis produces two genetically identical diploid cells, on the other hand, Meiosis produces four genetically identical haploid cells.

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Often microscopic examination of a specimen involves many procedures to be followed, from slide preparation to adjust the focal length in the microscope. These steps are of paramount importance for microscopic examinations.

Reducing the size of air bubbles under the coverslip cannot be done easily after the coverslip is put over the specimen. Preferably a needle is used while cautiously putting the coverslip over the specimen to avoid air bubbles. Though adding stains along the edges may work for some time, it is better to do the step of covering with coverslip one again cautiously.

The given picture shows that it is option 4 that seems to be correct than options 1, 2, and 3. We often add stain or solution to a slide without removing the coverslip. Because to prevent air bubble formation and also to reduce excess stain, this method of stain addition is good.

Placing a paper towel to soak up excess liquid is good for the slide to look neat and tidy with even diffusion of stain throughout the coverslip. Thus it makes the observation via microscope very legible and clear with proper light adjustment.

Hence proper microscopic examination and the steps prior to it ( preparation of slides) are of paramount importance for one to excel in this field.

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In this experiment, the students are comparing the time it takes for each ball to fall (option B).

Experiment is a test under controlled conditions made to either demonstrate a known truth, examine the validity of a hypothesis, or determine the efficacy of something previously untried.

According to this question, a science class is conducting an investigation to see how gravity affects objects of different masses. They drop three balls from the same height and time how long it takes the balls to hit the ground.

In this experiment, the masses of the different ball is the independent variable while the time it takes for each ball to fall is the dependent variable.

Therefore, it can be said that the students are comparing the time it takes for each ball to fall.

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The hottest part of the Bunsen flame, which is found just above the tip of the primary flame.

The main flame that gas welders employ is the neutral flame. There are two areas of a neutral flame: a hotter, lighter inner area and a cooler, darker outer area. A neutral flame produces a clean flame since the entire fuel gas is consumed during the operation.

The Bunsen flame's hotter region, immediately above the primary flame's tip, has a temperature of roughly 1,500 °C (2,700 °F). If there is insufficient air, the gas combination won't burn entirely and instead instead produce small carbon particles that, when heated to burning, give off light to create a brilliant flame.

Within the flame when burning hydrocarbon fuel, two processes are happening. The transformation of hydrogen and carbon into carbon monoxide and water is the first primary reaction. Carbon monoxide to carbon dioxide conversion is the secondary reaction; both are exothermic processes.

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The molarity of NaOH is 0.8 M.

Molar concentration, also known as molarity, is defined as the number of moles of solute present in a given number of liters of solution, or moles per liter of solution.

The balanced equation for the reaction is;

[tex]2NaOH(aq) + H_{2} SO_{4} (aq) --------- > NaSO_{4} (aq) +2 H_{2} O (l)[/tex]

Moles = concentration x volume  

thus;

0.220M x 0.0155L= 0.01 moles of [tex]H_{2} SO_{4}[/tex].

Using the mole ratio;

Moles of NaOH = Moles of [tex]H_{2} SO_{4}[/tex].×2

                        = 0.02 Moles

Therefore; moles of NaOH = 0.02 moles

But; Concentration = moles / volume  

Thus; Concentration of NaOH = 0.02 / 0.025L

                                                  = 0.8M

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