What does atomic number describe?
Responses

mass

mass

number of protons

number of protons

number of neutrons

number of neutrons

atomic weight

What will happen to the solute molecules on the left side of the container would depend on the kind of solution present on the right side.

What will happen to the solutes in the container can be explained using osmosis.

Osmosis refers to the movement of water molecules from the region of high water potential or low solute concentration to the region of low water potential or high solute concentration through a selectively permeable membrane.

Now, let us assume that the solution on the right side of the container has a lower solute concentration, which means that water molecules would move from the right side to the left side through the semi-permeable membrane. The solutes in the left side of the container would become diluted.

If it were to be the other way round, that is, the solution on the right side has more solutes than the one on the left side. Water molecules will move from the left side to the right side. Thus, the solution on the left side will become more concentrated as a result of water loss.

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77.094*[tex]10^{23}[/tex]  molecules are in 12.80 moles of strontium bydroxide.

The chemical strontium hydroxide has a molecular weight of 121.6324 g/mol and the molecular formula Sr(OH)2. It appears in the form of an anhydrate with prismatic, colorless crystals that are liquescent.

The building By counting the number of components (and their corresponding quantities) listed in the chemical formula, one can easily determine that each molecule of the compound NaOH contains three atoms.

By mole concept-

1moleof strontium bydroxide =6.023*[tex]10^{23}[/tex] molecules of strontium bydroxide.

so,

12.80 moles of strontium bydroxide =12.80*6.023*[tex]10^{23}[/tex]

No of molecule =77.094*[tex]10^{23}[/tex] molecule

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Answer:

a. Yes, both W and Y have the same atomic number. Since the atomic mass equals the sum of protons (which is the atomic number) and neutrons, both W and Y have different numbers of neutrons, making them isotops of each other.

b. Both W and Y have the same atomic number, making both the same element. Therefore they have the same chemical properties.

c. W: 29 protons, 34 neutrons, 29 electrons

Y: 29 protons, 36 neutrons, 29 electrons

Explanation:

a. Yes, both W and Y have the same atomic number. Since the atomic mass equals the sum of protons (which is the atomic number) and neutrons, both W and Y have different numbers of neutrons, making them isotops of each other.

b. Both W and Y have the same atomic number, making both the same element. Therefore they have the same chemical properties.

c. W: 29 protons, 34 neutrons, 29 electrons

Y: 29 protons, 36 neutrons, 29 electrons

Remember: mass number = protons (atomic #) + neutrons

HCN is classified as a weak acid because it partially ionizes in water to produce hydrogen ions as the only positive ion.

There are several definitions for acids.

HCN ionizes in water according to the following equation:

[tex]HCN < --- > H^+ + CN^-[/tex]

Because the HCN is only partially ionized and not a complete ionization, it is said to be a weak acid because hydrogen ion is still formed as the only positive ion.

Strong acids produce hydrogen ions as their only positive ions but are completely ionized in water, unlike weak acids.

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14036363. 64 kmThe distance apart are the foci of the moon's orbit.

The Moon is Earth's handiest natural satellite tv for pc. it's miles the fifth largest satellite within the solar gadget and the biggest and big relative to its parent planet, with a diameter about one zone that of Earth.

The foci of the moon's orbit  = 772,000 km/ 0.055

                                             = 14036363. 64 km.

The Moon takes approximately one month to orbit Earth (27. three days to finish a revolution, but 29.5 days to alternate from New Moon to New Moon). because the Moon completes each 27. three-day orbit around Earth, each Earth, and the Moon are transferring across the solar.

The Moon orbits Earth inside the same course as our planet rotates. So, the Moon clearly acts from west to east through our sky, albeit so slowly that we almost by no means note it.

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Examples of buffer solutions include:

Some applications of buffer solutions in Pharmaceutical Sciences include:

A buffer solution is an aqueous solution consisting of a mixture of a weak acid and its conjugate base, or vice versa.

Buffers are broadly divided into two types

1. acidic buffer solutions and

2. alkaline buffer solutions.

Acidic buffers are solutions that have a pH below 7 and contain a weak acid.

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Yes. The reaction is an addition reaction.

Addition reactions are reactions where 2 or more reactants combine to form a single product. Addition reactions are otherwise known as synthesis reactions because they often result in the synthesis of new molecules entirely.

Generally, addition reactions can be represented by the following equation:

A + B ---> AB

They are quite different from decomposition reactions in which a single product decomposes to form 2 or more products or substitution reactions in which an atom displaces another atom in a compound.

Thus, the reaction [tex]A_2 + C_3H_6 --- > C_3H_6A_2[/tex] is an addition reaction.

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It is expedient that Asim put some few pancreatic blood in a test tube to test for the functioning of digestive enzymes produced by the pancreas.

When someone is considering the purpose of digestive enzyme experiments, it should be what is given below:

Objectives:

That being said, enzymes are organic, biological or biochemical catalysts which speed up the rate of chemical reactions. Within the context of the task given above, digestive enzymes help to speed up the digestion of food substances. In order to confirm why this substance stopped working, a pancreatic blood test needs to be done in a test tube to confirm the reasons why the substance stopped working.

However, some of the reasons why digestive enzymes stopped working include the following:

So therefore, screening for pH, concentration and temperature of the digestive enzyme can used to test for inactivity of enzymes.

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Reactivity of these elements as follow

Calcium > Magnesium > Beryllium

What is valance electron?

A valence electron is an electron connected with an atom and capable of participating in the formation of a chemical bond; in a single covalent connection, both atoms contribute one valence electron to form a shared pair. The existence of valence electrons can affect the element's chemical characteristics and ability to bind with other elements: a valence electron can only be in the outermost electron shell of a main group element.

The valence shell, also known as the valence orbital, is the orbital found in the atom's outermost area. These valence shells contain electrons known as valence electrons, which are responsible for the chemical process. When one electron is withdrawn or added to this valence shell, the basic goal is to complete the element's octet.

The elements beryllium (Be), magnesium (Mg), calcium (Ca), have two electrons in their valence shells, giving them an oxidation state of +2

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The volume of water that must be added to 15 mL of sodium chloride solution 23.4% to dilute the ​concentration to 0.06 mmol/mL is 999985 mL.

The concentration of 23.4% sodium chloride solution in mol/L is calculated as follows:

23.4% solution = 23.4 g/100 mL solution

23.4 g/100 mL = 234 g/L

molar mass of NaCl = 58.5

Molarity of the NaCl solution = 234 / 58.5

Molarity = 4 mol/L

Using the dilution formula:

C₁V₁ = C₂V₂

where;

C₁ is the initial concentration = 4 mol/L or 4000 mmol/L

V₁ is the initial volume = 15 mL

C₂ is the final concentration = 0.06 mmol/L

V₂ is final volume = ?

V₂ = 4000 * 15 / 0.06

V₂ = 1000000 mL

Hence, the volume of water to be added will be:

1000000 - 15 = 999985 mL

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The solution of 12.0 M HCl and to prepare 300 mL of a 0.6 M solution , the initial volume is 0.015 L.

given that :

Molarity M1 = 12.0 M

volume V1 = ?

Molarity M2 = 0.6 M

Volume V2 = 300 mL = 0.3 L

The dilution law is given as :

M1 V1 = M2 V2

12.0 × V1 = 0.6 × 0.3 L

V1 = 0.18 / 12

V1 = 0.015 L

Thus, The solution of 12.0 M HCl and to prepare 300 mL of a 0.6 M solution , the initial volume is 0.015 L.

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Answer:

Explanation:

I forgot

The explanation of the reaction between the compounds is here.

What is compound?

A thing that is composed of two or more separate elements is called compound.

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When once a mileage in my load I added it from another city complezx.. The police have cried. The police had cried, the police have cried act as a George donor charges and the police have died. And the poly iodide act as a except her. The new council looks absorbing light of a different wavelength than polly iodide and the color turn dark dark blue. The object structure are poorly added inside the am I late helix Alex is not clear. Are bulky and sit inside the policy crowds of glucose units and could not get out of date.

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The balanced equation for the redox reaction, which takes place in a basic solution is:

A balanced equation for a redox reaction is one in which the electrons transferred are balanced and the atoms involved in the reaction are also balanced.

To balance redox reactions in a basic solution, OH⁻ ions and H₂O are placed on appropriate sides of the reaction.

Considering the given reaction:

Cr(OH)₃ + ClO₃⁻ (aq) → CrO₄²⁻ (aq) + Cl⁻ (aq):

The balanced equation will be:

2 Cr(OH)₃ + ClO₃⁻ (aq) + 4 OH⁻ → 2 CrO₄²⁻ (aq) + Cl⁻ (aq) + 5 H₂O

The electrons transferred and the atoms involved are balanced.

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To solve such this we must know the concept of combustion reaction. Combustion reaction happens in presence of oxygen. Magnesium oxide is  formed when magnesium undergoes combustion.

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

When magnesium undergoes combustion, the magnesium oxide is formed.

2Mg+O₂[tex]\rightarrow[/tex]2MgO

Therefore, magnesium oxide is  formed when magnesium undergoes combustion.

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From the mole ratio of the reaction, the mass of magnesium bromide formed when 1.00 g of magnesium reacts with 5.00 g of bromine is 2.88 g.

The mole ratio of the reaction between magnesium and bromine to form magnesium bromide is found in the equation of the reaction.

The equation of reaction is given below as follows:

Mole ratio of magnesium to bromine is 1 : 1

Moles of magnesium reacting = 1 / 24 moles

Moles of magnesium = 0.0416

Moles of bromine reacting = 5 / 180

moles of bromine reacting = 0.0277 moles

Bromine is the limiting reactant

Mass of magnesium bromide formed = 0.0277 * 104 g

Mass of magnesium bromide formed = 2.88 g

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The grams of solid product is 0.537 g.

Hence, Option A is correct.

The above equation can be solved by

The Symbol Ag used for Silver originates from the Latin word “Argentum

AgNO3 + NH4Cl ? AgCl + NH4NO3

(15.6 mL) x (0.500 M AgNO3) = 7.8 m mol AgNO3

(12.5 mL) x (0.300 M NH4Cl) = 3.75 m mol NH4Cl

7.8 m mol AgNO would react completely with 7.8 x (1/1) = 7.8 mol NH4Cl, but there is not that much NH4Cl present, so NH4Cl is the limiting reactant.

(3.75 m mol NH4Cl) / (1000 m mol/mol) x (1/1) x (143.3214 g AgCl/mol) = 0.537 g AgCl.

Hence,  The grams of solid product is 0.537 g.

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The specific heat capacity of the metal can be calculated using the calorimeter equation. The specific heat capacity of the metal is obtained as 0.406 J/(°C g).

The specific heat capacity of a substance is the heat energy required to raise its temperature by one degree celsius per one gram of that substance.

The calorimeter equation relating heat energy q, mass m and temperature difference ΔT and specific heat capacity c is written as:

q = mcΔT.

In the given system the heat energy is transferred from the metal to water thus the final temperature of both will be 25 °C. Thus, at thermal equilibrium we can write it as:

25 g × c (95 -25 °C) = 25 × 4.18  × (25 - 18.2 °C )

Where, mass of water can be taken as 25 g since its density is 1 g/ml. From this specific heat capacity of the metal c is calculated as follows:

c =  [ 25 × 4.18  × (25 - 18.2 °C ) ] / 25 g ×  (95 -25 °C)

  = 0.406 J/(°C g).

Therefore, the specific heat capacity of the metal is  0.406 J/(°C g).

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The molecular structure of the fat is changed when lipids like cholesterol are exposed to hydrogenation.

What is cholesterol?
Any member of the lipids class of specific chemical compounds is a kind of cholesterol. It is a sterol, a class of lipid (or modified steroid).  All animal cells produce cholesterol, which is a crucial part of the membranes that make up those cells. It is a yellowish crystalline solid when chemically separated. It is possible to increase the saturation of fatty acids by adding hydrogen to unsaturated fatty acid chains, which connects the hydrogen atoms to the saturation sites.

Hence, the molecular structure of the fat is changed when lipids like cholesterol are exposed to hydrogenation.

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The molecular formula for the compound in the task given above is 2,2,3-trimethylbutane.

The correct answer choice is option b.

The molecular formula of a compound is the name of the compound derived from its structural formula. From the task given above, the parent chain is butane. There are three different substituents groups; 2 different methyl group on carbon 2 and another methyl substituent at carbon 3.

The image to further illustrate the solution to the above problem is attached.

That being said, organic compounds are those compounds which contains carbon and hydrogen.

In conclusion, from the detailed explanation above, it can be deduced that the name of the compound above is 2,2,3-trimethylbutane

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Starch and cellulose have similar chemical structures, but differ in the orientation of bonds between glucose monomers.

Starch is glucose polymer in which repeating unit are connect by alpha bond and all the repeating unit are direct in one direction. starch is present in foods. it is less crystalline.

Cellulose is also a glucose polymer but cellulose units can be rotated around the axis of backbone of glucose polymer. cellulose is natural organic compound. glucose if formed by the combination of carbon, hydrogen , oxygen , .

Thus, Starch and cellulose have similar chemical structures, but differ in the orientation of bonds between glucose monomers

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Two or more than two atoms with different physical or chemical properties can not combine together to form an element. Zinc is the element, that represents the given electronic configuration.

Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same.

In the given electron configuration [Ar]4s²3d¹⁰. Argon has 18 electrons. So, we have to add 12 electrons from s and d subshells to 18. The total number of electrons that we get on adding is 30. The element that corresponds to atomic number 30 is zinc that is Zn.

Therefore, Zinc is the element, that represents the given electronic configuration.

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A chemist must take 6.053 mL of 3.6 M NaOH in water to form 16.61 mL of 1.312 M NaOH solution.

In the laboratory, high-concentration solutions are prepared for using a longer duration. This solution is known as a stock solution. These solutions are diluted based on chemical needs.                                               We need 6.61 mL of 1.312 M NaOH solution                                                                                The stock concentration of NaOH solution = 3.6 M                                                  We have to find the volume of this stock solution that should be taken Given M₁ = 3.6 M M₂ = 1.312 M V₂ = 16.61 mL V₁ =?

M₁V₁ =M₂V₂

3.6 × V₁ = 1.312 × 16.61

V₁ = 1.312 × 16.61 ÷ 3.6

V₁ = 6.053 mL

Hence, 6.053 mL of 3.6 M NaOH is needed to form 16.61 mL of 1.312 M NaOH solution

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Answer:

b labeling all chemical immediately

Natural abundance indicates the following percentage of the natural occurrence of an isotope of an element on the planet.

Natural abundance is defined as the relative amount of the isotopes of an element which occurs in nature. It is also known as geonormal abundance.

The formula to calculate the natural abundance of an element with two isotopes is given as :

x + (1 - x) = 1

Where,

x represents the fractional value of isotope-1 and 1 - x represents the fractional value of isotope-2.

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