in which reaction would an increase in pressure at constant temperature have no effect on the relative amounts of the substances present in the equilibrium mixture? all substances are gases.

(a) The maximum number of electrons an atom can have with the sublevel designation is 2 electrons.

(b) The maximum number of electrons for p-orbital is 6 electrons.

(c) The maximum number of electrons for f-orbital is 14 electrons.

(a) For n = 2, I = 1, ml = 0,

The energy level will be:

Energy level = 2(1) + 1 = 3 sub-orbitals

= -1  0  1  : ( 2 electrons each)

Thus, the maximum number of electrons an atom can have with the sublevel designation is 2 electrons.

(b) 5p

p-orbital has 3 sub-orbitals and a maximum of 6 electrons

(c) n= 4, I = 3

energy level = 2(3) + 1 = 7 sub-orbitals

7 sub-orbitals correspond to the f-orbital and it has a maximum of 14 electrons.

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If HA represents a weak acid, The equilibrium corresponds to the equilibrium constant kb for the conjugate base, A⁻ is

A⁻    + H₂O ⇄  HA  +  OH⁻

Kb = [HA] [OH⁻] / [A⁻]

According to Bronsted lowery , the acids are those which donates the H⁺ ion. The specie which accept the proton is called as base. the conjugate acid and the conjugate base is the which differ by a proton.

The equation is given as :

A⁻    + H₂O ⇄  HA  +  OH⁻

The equilibrium constant Kb is given as :

Kb = [HA] [OH⁻] / [A⁻]

Thus, If HA represents a weak acid, The equilibrium corresponds to the equilibrium constant kb for the conjugate base, A⁻ is

A⁻    + H₂O ⇄  HA  +  OH⁻

Kb = [HA] [OH⁻] / [A⁻]

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When the element comes near an atom having seven valence electrons, no reaction will occur.

The name of the element is Neon.

The electron configuration of elements shows how the total number of electrons present in the atoms of the elements are arranged in the orbitals around the nucleus.

In other words, the electron configuration of elements indicates the total number of electrons on its neutral atom, and hence the atomic number of elements.

In this case, the electron configuration is [tex]1s^2 2s^2 2p^6[/tex]. The total number of electrons is 10. Hence, the atomic number of the element is 10. The element with atomic number 10 is Neon (Ne).

Neon represents one of the inert elements on the periodic table. They possess octet electron configuration and as such, are not reactive ordinarily. Thus, if an atom of neon comes near an atom with seven valence electrons, no reaction will occur.

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Reaction rate at

What is reaction rate?

The rate of a chemical reaction is defined as rate of change in concentration of a reactant or product divided by its coefficient from the balanced equation

Reaction rate = [tex]\frac{mass of tablet / volume of water }{reaction time}[/tex]

For 3° C:

Reaction rate = [tex]\frac{1000mg / 0.200L}{138.5 sec}[/tex] = 36.1 mg/L/sec

For 24 °C:

Reaction rate = [tex]\frac{1000/0.200}{34.2}[/tex] = 146.2 mg/L/sec

For 40°C:

Reaction rate = [tex]\frac{1000/0.200}{26.3}[/tex] = 190.1 mg/L/sec

For 65 °C:

Reaction rate = [tex]\frac{1000/0.200}{14.2}[/tex] = 352.1 mg/L/sec

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Vapour pressure rises with temperature and is a measurement of a substance's propensity to transform into a gaseous or vapour state.

The boiling point of a liquid is the temperature at which the pressure exerted by its surroundings equals the vapour pressure present at the liquid's surface. Compound molecules that bond well with one another will have a low vapour pressure (less inclination to escape to the vapour phase), whereas compounds that connect poorly with one another would have a high vapour pressure. Vapour pressure is a measure of a compound's capacity to bond with itself. Based on the strength of its intermolecular forces, a liquid's vapor pressure is one of its characteristics.

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The measurement of a substance's propensity to change into a gaseous or vapour state, vapour pressure increases with temperature.

The temperature at which the ambient pressure equals the vapour pressure existing at the liquid's surface is known as the boiling point of a liquid. Low vapour pressure indicates that a compound's molecules are well-bonded to one another and are less likely to escape into the vapour phase than high vapour pressure indicates weak bonds. An indicator of a compound's ability to bind to itself is its vapour pressure. A liquid's vapor pressure is one of its properties and depends on the strength of its intermolecular forces.

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The mass of HNO₃ is 19.17kg.

Chemical equations are symbolic depictions of chemical reactions where the reactants and products are stated in terms of their respective chemical formulae.

The equation of the reaction is;

4NO₂(g) + O₂(g) + 2H₂O(l) → 4HNO₃(aq)

There is a plenty of water and oxygen. Because it controls the amount of product formed, NO2 is referred to as a limiting reagent. With the aid of the following formula, the moles of NO2 are determined:

Mass of NO₂ produced = 14 kg

Molar mass of NO₂ = 46 g/mol

Number of moles of NO₂ = 14 × 10³ g/46 g/mol

Number of moles of NO₂ = 304.34 moles.

Utilizing stoichiometry,

HNO₃ will be produced from 4 moles of NO₂

This indicates that 304.34 moles will produce,

4/4×304.4 = 304.4.

The first equation can be used to get the mass of HNO₃ and we will obtain,

Molar mass of HNO₃ = 63gm/mol

Molar mass of HNO₃ = 63×304.34

Molar mass of HNO₃ = 19173.42 (or) 19.17.

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Complete question is "Another component of acid rain is nitric acid, which forms when NO2, also a pollutant, reacts with oxygen and water according to the simplified equation 4NO2(g)+O2(g)+2H2O(l) → 4HNO3(aq) The generation of the electricity used in a medium-sized home produces about 14 kg of NO2 per year. Part A Assuming that there is adequate O2 and H2O, what mass of HNO3, in kg, can form from this amount of NO2 pollutant?".

The percent error if the accepted value is 54.89 g is 55.0 g

The percent error is the absolute value of the error divided by the accepted value, and multiplied by 100%

Here given data is

Volume =  12.06 ml

Density =  4.56 g/ml

Mass = ?

So for calculate mass we have formula

Density = mass/volume

Mass = volume × density

Mass = 12.06 ml×4.56 g/ml

Mass = 54.99 gram

We have to calculate percent error = ?

So the formula is

Percent error = approximate value - exact value / exact value ×100

Percent error = 55.0 g

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Answer:

45

Explanation:

Twelve plus Twenty two plus eleven equals forty five. Basically just add all the numbers to find the total number of atoms

(I could be wrong I guessed

The melting point of solution will be

a. 2.0 mol of CaCl2: -11.2

b. 20.0 g of NaCl: -1.3

The melting point of a liquid is the temperature at which, under atmospheric pressure, a solid transforms into a liquid. At this time, both the liquid and solid phases are in equilibrium. Additionally dependent on pressure, the substance's melting point is provided at standard pressure. The freezing point or Crystallisation point is the temperature at which a liquid reverses its state and becomes a solid. The freezing point might easily appear to be lower than it actually is due to the capacity of substances to supercool. In truth, when determining a substance's "characteristic freezing point," because the transition from solid to liquid only entails a minor change in volume, the melting point is sensitive to extremely large changes in pressure, but normally this sensitivity is orders of magnitude less than that for the boiling point.

When a solute is added in a solvent the boiling of solvent is elevated. This elevation in boiling point (ΔTb) is given by the formula ΔT=Kbm Where Kb= Boiling point constant. The melting point of a solution prepared from the given quantity of solute in 1.00 kg of water will be;

a. 2.0 mol of CaCl2: -11.2

b. 20.0 g of NaCl: -1.3

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The temperature of a material when it undergoes an endothermic change remains constant. The heat added to the material is used to overcome intermolecular forces.  

What is endothermic reaction?

The endothermic reaction is a type of reaction where the reactants of the system absorb the heat energy from the surroundings to form the products. Example for an endothermic reaction is the melting of ice cube.   Sublimation, vaporization and melting can also be considered as examples for endothermic reactions.

The heat energy supplied to the material is basically used to break the bonds between the molecules. So there is no change in the kinetic energy of the molecules in endothermic reactions.

Therefore, in endothermic reactions, the temperature of a material when it undergoes an endothermic change remains constant due to the energy being used in breaking the bonds. So no increase in kinetic energy can be observed.

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Both the XeCl bond dipoles and the XeF bond dipoles (red) cancel.

The trans isomer is nonpolar because there is no net dipole.

The Xe-F and Xe-Cl bond dipoles do not cancel in the cis isomer.

The molecule in the cis isomer is polar and has a net dipole moment.

There are 32 valence electrons in the trial structure.

8+14+14=36 valence electrons for 1 Xe+2 F+2 Cl.

We add two line pairs to the center atom since we have four more electrons.

The Lewis structure is

This system is an [tex]AX_{4} E_{2}[/tex]

It has an octahedral electron geometry.

The F and Cl atoms will occupy the equatorial positions, while the bulky lone pairs will occupy the top and bottom axial positions.

Square-planar molecular geometry is present.

There are two possible arrangements for the atoms.

The binding angles between F, Xe, and Cl are 180 degrees in the trans isomer.

Both the XeCl bond dipoles and the XeF bond dipoles (red) cancel.

The trans isomer is nonpolar because there is no net dipole.

The Xe-F and Xe-Cl bond dipoles do not cancel in the cis isomer.

The molecule in the cis isomer is polar and has a net dipole moment.

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When cations and anions in an aqueous solution react to generate a precipitate, an insoluble ionic solid, precipitation processes take place.

The solubility principles for typical ionic solids can be used to determine whether or not such a reaction takes place. Before figuring out the condition of the products and creating a net ionic equation, one must refer to the solubility criteria because not all aqueous reactions produce precipitates. Scientists are able to identify the ions that are present in a solution because to the capacity to forecast these reactions, and industries are able to create compounds by taking components from these reactions. When specific cations and anions combine in an aqueous solution, precipitates are insoluble ionic solid products of the reaction. The variables that affect how a precipitate forms can be different.

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The total number of valence electrons in NBr₃ is 26 valence electrons.

The given molecule is nitrogen tribromide ,  NBr₃

no. of nitrogen atoms in  nitrogen tribromide is 1 . nitrogen atomic number is 7 , the number of electrons in the valence shell = 5

total number of valence electron in nitrogen = 1 × 5 electrons = 5 electrons

number of bromine atom in  nitrogen tribromide is = 5. bromine atomic number is 35 , number of electrons in the outermost shell = 7

total no. of valence electron in bromine = 3 × 7 = 21

Total number of valence electrons in the molecule, NBr₃

NBr₃ = 5 electrons + 21 electrons = 26 electrons.

Thus, The total number of valence electrons in NBr₃ is 26 valence electrons.

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The Number of Moles of Zn is 0.34108 and the number of moles of Cr2O3 is 0.14671.

What is Number of Moles?

The ratio of a substance's given mass in a chemical reaction to the mass of one mole of that material is what determines how many moles there are of that substance. A mole of any substance is equal to 6.0231023, or Avogadro's number. The ratio of a substance's given mass in any kind of chemical reaction to the mass of one mole of that material is the number of moles of that substance.

Moles of Zn can be calculated by using the formula

22.3 g of Zn x 1 mole Zn/65.4 g = 0.341 moles of Zn.

Moles of Cr2O3 can be calculated by using the formula

22.3 g of Cr2O3 x 1 mole Cr2O3/151.99 = 0.146 moles of Cr2O3.

Hence, 0.34108 and 0.14671 will be the number of moles for Zn adn Cr2O3 respectively.

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Zn has a mole count of 0.34108, while Cr2O3 has a mole count of 0.14671.

What is Number of Moles?
The number of moles of a substance is determined by the ratio of its given mass in a chemical reaction towards the mass of one mole of that substance. A mole, or 6.0231023, is equal to one mole of any substance. The number of moles of a substance is defined as the mass of one mole divided by the given mass of the substance in any type of chemical reaction.

The formula can be used to determine moles of zinc.
22.3 g of Zn x 1 mole Zn/65.4 g = 0.341 moles of Zn.

The formula can be used to determine moles of Cr2O3.
22.3 g of Cr2O3 x 1 mole Cr2O3/151.99 = 0.146 moles of Cr2O3.

Therefore, the moles of Zn and Cr2O3 will be 0.34108 and 0.14671, respectively.

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Two factors that determine whether a collision between molecules of a and b results in a reaction is the total kinetic energy of the reactant and the orientation of the collision

The collision energy must be greater than the activation energy for the reaction and the collision must occur in the proper orientation and the collision frequency must be greater than the frequency factor for the reaction and a collision between the reactant must occur and the tow factors that determine the possibility of reaction between molecules would be the total kinetic energy of the reactant and the orientation of the collision and the particles should collide so as the total energy would be equal to the activation energy of the reaction

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The molecular formula for the empirical formula (CHCl[tex])_{n}[/tex] is C2H2Cl2.

Here we have to find the molecular formula.

Form the ideal gas law we have:

PV = nRT

n = moles = weight(W) / molar mass(M)

PV = WRT/ M

Given:

W = 0.8g

R = 0.0821 atm/ K-mol

T = 373K

V = 256mL = 0.256L

P = 750 torr = 750 / 760

  = 0.987 atm

Putting all the values we have:

0.987 × 0.256 = 0.8 × 0.0821 × 373 / M

M = 97 g/mol

As the empirical formula is (CHCl[tex])_{n}[/tex]

Molar mass = n ( 12.01 + 1.01 + 35.45)

So we have

97 = n( 48.47)

n = 2

So we have the molecular formula is (CHCl[tex])_{2}[/tex].

Therefore we get the molecular formula is C2H2Cl2.

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2.83 M will be the molar concentration of ethanol (CH₃CH₂OH, 46.08 g/mol) in a wine that is 14% ethanol by mass.

Molar mass of CH₃CH₂OH = 46.08 g/mol

Percentage in wine = 14 %

Density of wine = 0.93 g/cm3

Molar concentration = ?

Calculate density of ethanol:

density of ethanol = (% of ethanol / 100) × density of wine

density of ethanol = (14 / 100) 0.93 g/ml

density of ethanol = 0.14 × 0.93 g/ml

density of ethanol = 0.1302 g/ml

Supose we have 1 ml wine so mass = 0.1302 g / ml

Now calculate the number moles of ethanol

number of moles = mass / molar mass

number of moles of CH₃CH₂OH = 0.1302 g / 46.08 g/mol

number of moles of CH₃CH₂OH = 0.00283

Calculate the molarity of ethanol

molarity = number of moles / molar mass in L

molarity of CH₃CH₂OH = 0.00283 mol / 1 ml × 1000 ml / 1L

molarity of CH₃CH₂OH = 2.83 mol/L

molarity of CH₃CH₂OH = 2.83 M

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    choline has different ionization energies in CCl4CCl4Cl, it is more electronegative than C and has a negative oxidation number because it “picks up” an electron in a bond, and in HClOHClO, it is less electronegative than O Therefore, it has a positive oxidation number. Hence "lose". "Electrons in bonds

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Of the options given, only I₂ exhibits the London dispersion force. So the correct answer to this question is A.

London dispersion forces are a type of intermolecular force acting between atoms and molecules, usually electrically symmetric. That is, the electrons are symmetrically distributed with respect to the nucleus. They are part of the Van der Waals force. LDF is named after the German physicist Fritz London. It can be defined as a kind of temporary attractive force that occurs when an electron occupies it. It is considered to be the weakest intermolecular force.

H₂S exhibits a dipole-dipole interaction due to the large difference in electronegativities of hydrogen and sulfur. Because of this, their bond is polar. NH₃ shows hydrogen bonding between them. Since HF is a polar covalent molecule, it exhibits dipole-dipole interactions.

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Complete question is as follows:

"All molecules have London forces between them, but dipole-dipole and hydrogen bonding are so much stronger that when they are present we can ignore London forces. Only NONPOLAR molecules will SHOW LDF. Which of these has ONLY LDFs?"

A. I₂

B. HF

C. NH₃

D. H₂S

Aluminum phosphate as a precipitate is produced on reaction of aqueous aluminum nitrate with aqueous ammonium phosphate.

There is a possibility that an insoluble solid substance could form when two aqueous solutions combine chemically. This substance is insoluble, and the reaction is what is known as a precipitation reaction.

A (aq) + B (aq) → C (aq)+ D (s)

The balanced chemical equation illustrating the reaction's byproducts is:

Al(NO₃)₃(aq) + (NH₄)₃PO₄(aq) → AlPO₄(s) + 3NH₄NO₃(aq)

Here, AlPO₄(s) is produced as a precipitate.

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The most well-known blizzards are winter storms that create several inches of snow and occur with strong winds that cause blowing snow and whiteout conditions, however not all blizzards take place in this fashion.

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There are 20 protons and 18 electrons in a calcium ion. Each electron has a charge of -1 while each proton has a charge of +1. It has a 2 charge.

The finished text is: 20 protons and 18 electrons make up the ion Ca2+. Having 20 protons and 20 electrons, an atom of calcium. Two electrons were lost, as shown by the 2+ charge adjacent to the symbol: 20-2=18.

An ion with 18 electrons and a positive charge is created by a certain element. Keep in mind that atoms have the same amount of protons and electrons as their atomic number, which is equal to the number of protons it contains. Since calcium has an atomic number of 20, it is the element in question.

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In order to titrate a solution of nitric acid, a student uses a potassium hydroxide solution.

Neutralization is a chemical process that happens when an acid is put to a base. Nitric acid, HNO3, reacting with the basic potassium hydroxide, KOH, is one example. A salt and water are produced by neutralizing HNO3 + KOH with H2O and KNO3.

The interaction of H+ ions and OH- ions produces water in a neutralization reaction, which occurs when an acid and a base react to form water and a salt.

The reaction is: CaCO3(s)+2HNO3 (aq)→Ca(NO3)2(aq)+CO2(g)+H2O(l).

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No matter how ill they are or if they have any pre-existing conditions, it is a requirement of the Affordable Care Act that all Americans nor legal residents get health insurance.

For households earning below 100% - 400% of both the federal poverty threshold, the law offers customers subsidies (referred to as "premium tax credits") that reduce prices (FPL). Increase Medicaid coverage to include all adults with incomes below 138% of the federal poverty level.

Obamacare allows people to purchase health insurance regardless of their financial level. You may be eligible for a prescription tax credit or other special discounts that will lower the cost of your health insurance if your family income between 100% or 400percent of total of both the federal poverty threshold (FPL).

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In the reaction of 30.0 g of propane and 75.0 g of oxygen, oxygen is the limiting reagent.

The chemical equation of the reaction of propane and oxygen is as follows,

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

Here, 30 grams of propane reacts with 75 grams.

Step 1- First find the moles of oxygen and propane.

Moles of propane = mass/molar mass

Moles of propane = 44/30

Moles of propane = 1.21 moles.

Now, moles of oxygen = 75/18

Moles of oxygen = 4.16 moles.

Step2- compare the moles,

Now, we see, as per the reaction, for every one mole of propane. there should be 5 moles of oxygen, hence,

1 mole propane = 5 moles oxygen

1.21 moles propane = 6.05 moles of oxygen.

So, 6.05 moles of oxygen are required but we have only 4.16 moles, so, here, oxygen is the limiting reagent.

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The concentration of hydrogen ions increases as a result of a series of chemical reactions that take place when CO2 is absorbed by saltwater.

The seawater's acidity rises as a result, and carbonate ions become relatively less common. Seawater absorbs carbon dioxide, which is present naturally in the atmosphere. Carbonic acid (H2CO3) is created when water and carbon dioxide mix. This weak acid dissociates into hydrogen ions (H+) and bicarbonate ions (HCO3-). Carbonate from the sea is used by marine life to create their shells and skeletons. Carbonate is less readily available for animals to build their shells and skeletons as seawater becomes more acidic. Shells and skeletons may dissolve in highly acidic environments.

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The nuclear equation for decay of rubdium-87 by the emission of single beta particle is [tex]^{87}Rb_{37}[/tex] >>> [tex]^{87}Sr_{38}[/tex] + [tex]^{0}e_{-1}[/tex]

There are 36 isotopes of rubidium (37Rb), but only two of them are present in naturally occurring rubidium: 85Rb (72.2%), and the radioactive 87Rb (27.8%). Rubidium is radioactive enough in normal rubidium mixes to fog film in around 30 to 60 days.

The half-life of 87Rb is 4.92 1010 years. It is fairly common because it easily replaces potassium in minerals. Numerous rock samples have been dated using 87Rb, which decays to stable strontium-87 by the emission of a beta particle. Sr tends to concentrate in plagioclase during fractional crystallization, leaving Rb in the liquid phase.

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The concentration of HCl is 0.093 M

What is titration?

Titration is a typical quantitative chemical analysis method used in laboratories to ascertain the concentration of an identified analyte. It is also referred to as titrimetry and volumetric analysis (a substance to be analyzed). A reagent, also known as a titrant or titrator, is created as a standard solution with a specified volume and concentration.

The concentration of the analyte is determined by the titrant's reaction with an analyte solution (also known as the titrand). Titration volume refers to the volume of titrant that interacted with the analyte.

Given,

Volume of NaOH = 12.7 ml

Concentration of NaOH( MNaOH) = 0.185 M

Volume of NaOH= 25.0 ml

HCl  +  NaOH   →     NaCl  + H2

In this chemical reaction the ratio between the number of moles of HCl and NaOH is 1:1 .

moles of HCl = moles of NaOH

MHCl * Volume of HCl = MNaOH × Volume of NaOH

MHCl =  (MNaOH ×volume of NaOH)/ volume of HCl

MHCl = (   0.185  * 12.​7)/ 25

MHCl         = 0.093 M

​Hence, the concentration of HCl is 0.093 M

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The amount of NaOH required is twice that of H₂SO₄. According to the balanced equation.

Diprotic Acid(also called dibasic acid) an acid that can donate two hydrogen ions (H+) or protons per molecule in aqueous solution. A dibasic acid is a type of polybasic acid that can donate multiple protons per molecule. Examples: sulfuric acid (H₂SO₄) and carbonic acid (H₂CO₃). The number of equivalence points in the titration curve of polybasic acids depends on the number of acidic protons in the acid. Therefore, the titration curve has two equivalence points because we titrated diprotic acid with two acidic protons.

According to the balanced chemical formula:

2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O

The mole ratio of H₂SO₄ and NaOH is 1:2. This means that 2 moles of NaOH are required for each mole of H₂SO₄.

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Answer:

Displacement reactions occur when a more reactive metal reacts to displace a less reactive metal in a compound.

Explanation: