The sp of pbbr2 is 6. 60×10−6. what is the molar solubility of pbbr2 in pure water?

An aqueous solution of a strong base has a pH of 10. 220 at 25°C then concentration of the base if the base is

(a)  LiOH =  1.66×[tex]10^{-4}[/tex]  M

(b)  [tex]Ba(OH)_{2[/tex] =  3.32×[tex]10^{-4}[/tex]M

Calculation ,

For calculation of concentration of the   LiOH and  [tex]Ba(OH)_{2[/tex] first we have to calculate pOH of the solution.

pH + pOH = 14

pOH = 14 - pOH = 14 - 10.22  = 3.78

pOH = -㏒ [ [tex]OH^{-}[/tex] ]

[ [tex]OH^{-}[/tex] ] = [tex]10^{-pH}[/tex] =  [tex]10^{-3.78}[/tex] = 1.66×[tex]10^{-4}[/tex]

So ,  concentration of the base LiOH =  1.66×[tex]10^{-4}[/tex]

So ,  concentration of the base [tex]Ba(OH)_{2[/tex] =  1.66×[tex]10^{-4}[/tex] ×2 = 3.32×[tex]10^{-4}[/tex]

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There are 17.97 moles of calcium chloride would react with 5. 99 moles of aluminum oxide .

The balanced chemical equation between  reaction between calcium chloride and aluminum oxide is given as,

[tex]3CaCl_{2} (aq)+Al_{2} O_{3} (s)[/tex] → [tex]3CaO_{2} (s)+2Al Cl_{3} (aq)[/tex]

The molar ratio of above reaction is  3:1

It means 3 moles of calcium chloride is require to react one mole of aluminum oxide.

The number of moles of calcium chloride requires to react with  5. 99 moles of  aluminum oxide  = 3 × 5. 99 = 17.97 moles

The equation in which number of atoms of elements in reactant side is equal to the number of atoms of elements in product side is called balanced chemical equation .

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Answer:

When acid reacts with base it will form salt and water

When a base reacts with an acid, a salt and water will form. Therefore, the correct option is option A.

The exchange of one or perhaps more hydronium ions, H+, amongst species that can be either neutral (molecules like water, H2O, or acetic acid, CH3CO2H), or electrostatic attraction (ions like ammonium, NH4+, hydroxide, OH, or carbonate, CO32), is what is known as an acid-base reaction.

It also includes equivalent behavior of acidic ions and molecules (aluminum chloride, AlCl3, as well as the silver ion AG+) that do not give hydrogen ions. When a base reacts with an acid, a salt and water will form.

Therefore, the correct option is option A.

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Atoms of particles are so small that they cannot be divided further by any physical means.

According to John Dalton, atoms are the smallest, indivisible particles of elements.

However, it was later found out that chemically, atoms consist of protons, neutrons, and electrons.

Thus, the indivisibility of atoms that John Dalton was referring to must be that of physical division.

In other words, the particles of atoms are so small that dividing them further using physical means is absolutely impossible.

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Answer:

butanal

Explanation:

It's not 1-propanone because otherwise you have OH bonded to C not O and H bonded to C separately. 2-butanol means that the O and H would be bonded to a different C atom, and it's not propyl hydrogen ether because the O would be in the chain of bonded Cs.
Hope this helps :)

Answer:

Butanal

Explanation:

trust

Answer:

D.) magnesium and sulphur​

Explanation:

Generally, ionic bonds form between a metal and a nonmetal.

Generally, covalent bonds form between two nonmetals.

Generally, metallic bonds form between two metals.

Nonmetals are located on the right side of the periodic table (apart from the noble gases in the final column). Hydrogen is also a nonmetal. Metals are every other element in the periodic table.

A.) Hydrogen (nonmetal) and carbon (nonmetal) = covalent

B.) Aluminum (metal) and magnesium (metal) = metallic

C.) Silicon (nonmetal) and chlorine (nonmetal) = covalent

D.) Magnesium (metal) and sulphur (nonmetal) = ionic

Using the given relations we can deduce the fact that 3x-0.25y=3 is the only function and the other two -3x=15, 2y=10 are said to be not a functions.

A function is a term that is known to be the association that do exist  between a group of inputs that are said to have only a single output each.

A  function is also seen as the association between inputs where each input which is known to be linked to only one output.

To know the function, we have been given 3 relations that  are:

-3x=15

2y=10

3x-0.25y=3

In -3x=15, one can calculate the value of x=-5 but cannot calculate for the  value of y.

In 2y=10, we see that only one variable via which we can only get the value of y.

In 3x-0.25y=3 , when we put the value of x then we can be able to get the value of y and this means that each value of x is said to be a corresponding value of y. Therefore 3x-0.25y=3 is said to be the only function among the three.

Therefore, Using the given relations we can deduce the fact that 3x-0.25y=3 is the only function and the other two -3x=15, 2y=10 are said to be not a functions.

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See full question below

Drag each relation to the correct location on the table.

Classify the relations according to whether or not they are functions.

-3x = 15

2y = 10

3x − 0.25y = 3

{(2, 3), (1, 3), (5, 3), (2, 6)}

The new concentrations of [tex]HClO[/tex] and [tex]NaClO[/tex] are  0.25M and 19M

Calculation of number of moles of each component,

Molarity of [tex]HClO[/tex] = number of moles/volume in lit =  0. 500 M

Number of moles = molarity  of [tex]HClO[/tex]× volume in lit = 0. 500 M× 0.025 L

Number of moles of [tex]HClO[/tex] = 0.0125 mole

Molarity of [tex]NaClO[/tex]  = number of moles/volume in lit =  0. 38 M

Number of moles = molarity of [tex]NaClO[/tex] × volume in lit = 0. 38 M× 0.025 L

Number of moles of  [tex]NaClO[/tex]  = 0.95 mole

Calculation of new concentration at volume 50 ml ( 0.05L)

Molarity of [tex]HClO[/tex] = number of moles/volume in lit = 0.0125 mole/0.05L

Molarity of [tex]HClO[/tex] = 0.25M

Molarity of [tex]NaClO[/tex]  = number of moles/volume in lit = 0.95mole/0.05L

Molarity of [tex]NaClO[/tex]  = 19 M

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Point defects are possible for al2o3 as an impurity in mgo. then 2 Al3+ must be added to form 1 Mg2+  must be added to form each of these defects

Point defects are zero-dimensional lattice defects, meaning they lack lattice structure in any dimension. Impurity atoms in a pure metal, vacancies, and self-interstitials are examples of common point defects.

Point defects are zero-dimensional lattice defects, which means they lack any kind of lattice structure. Point defects include, but are not limited to, atoms of impurity in a pure metal, vacancies, and self-interstitials.

The term "point defect" refers to the flaw or imperfection that results from the placement of a point-like constituent particle, such as an atom, an ion, or a molecule, in a crystalline structure.

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Low pressure region is formed as air masses move horizontally

Basically, an air mass is a volume of air that is doing something. A high pressure region and a low pressure area on a weather chart are examples of air masses. It may be the cloud burst that you were recently trapped in. Essentially a description of a zone that behaves consistently.

The horizontal motion of air is known as wind. When there are variations in air pressure, winds begin to blow. A force is created when air pressure is higher in one location than another. High pressure pushes the force in the direction of lower pressure.

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PbCl2 is more soluble in acid as compared to other salts of lead.

Four salts of lead are more soluble in acid solution than water.

[tex]PbS[/tex] ⇒ [tex]Pb^{2+} + S^{2-}[/tex]

[tex]2H^{+} + S^{2-}[/tex]  ⇒ [tex]H_{2}S[/tex]

As [tex]S^{2-}[/tex] ions are removed from the solution by the formation of [tex]H_{2} s[/tex], the solubility of [tex]PbS[/tex] increases in acid solution.

[tex]PbCo_{3}[/tex] ⇒ [tex]Pb^{2+} + Co_{3} ^{2-}[/tex]

[tex]2H^{2+} + Co_{3} ^{2-}[/tex]  ⇒ [tex]H_{2} Co_{3}[/tex]

   As [tex]Co_{3}[/tex] ions are removed from the solution by the formation of [tex]H_{2} Co_{3}[/tex], the solubility of [tex]PbCo_{3}[/tex] increases in acid solution.

[tex]PbCl_{2}[/tex] ⇒ [tex]Pb^{2+} + 2Cl^{-}[/tex]

[tex]2H^{+} + 2Cl^{-}[/tex] ⇒[tex]2HCl[/tex]

As [tex]Cl^{-}[/tex] ions are removed from the solution by the formation of HCl, the solubility of [tex]PbCl_{2}[/tex] increases in acid solution.

[tex]PbI_{2}[/tex] ⇒ [tex]Pb^{2+} + 2I^{-}[/tex]

[tex]2H^{+} + 2I^{-}[/tex] ⇒ [tex]2HI[/tex]

As [tex]I^{-}[/tex] are removed from the solution by the formation of [tex]HI[/tex], the solubility of [tex]PbI_{2}[/tex] increases in acid solution.

Thus from above we concluded that all the given salt of lead is more soluble in acid solution than in water.

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X(N03)2

Given: Consider a hypothetical atom x

molecular formula of calcium nitrate = Ca(NO3)2

formula of x chloride is xcl2

molecular formula for x nitrate = ?

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[tex]{ \red{ \tt{option \: (c)}}}[/tex]

Explanation:

One d orbital can hold 10 electrons.

The maximum number of electrons which can be hold by one d orbital is 10 electrons. It can hold less than 10 electrons in it's orbit but not more than 10 electrons. It's impossible to hold and never possible to hold more than 10 electrons in d orbital.

The chemical process of food breakdown is called digestion.

Based about how food is digested, mechanical digestion versus chemical digestion is the two main types of catabolism. The digestive system's four important processes are motility, digesting, absorption, as well as secretion.

Digestion enzymes break down food as it moves from the mouth through our digestive system, transforming it into more easily absorbed nutrients. Chemical digestion would be the term for this disintegration. Amino acids as well as reducing sugars undergo a chemical reaction when food is processed and cooked at a high temperature, creating various flavors and brown colors.

Therefore, the chemical process of food breakdown is called digestion.

Hence, the correct answer will be option (c).

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Answer:

43 g N₂

Explanation:

To find the mass of N₂ required, you need to (1) convert grams H₂ to moles H₂ (via molar mass), then (2) convert moles H₂ to moles N₂ (via mole-to-mole ratio from equation coefficients), and then (3) convert moles N₂ to grams N₂ (via molar mass). It is important to arrange the conversions in a way that allows for the cancellation of units. The final answer should have 2 sig figs to match the amount of sig figs of the given value.

Molar Mass (H₂): 2(1.008 g/mol)

Molar Mass (H₂): 2.016 g/mol

Molar Mass (N₂): 2(14.009 g/mol)

Molar Mass (N₂): 28.018 g/mol

1 N₂(g) + 3 H₂(g) -----> 2 NH₃(g)

9.3 g H₂           1 mole             1 mole N₂             28.018 g
--------------  x  ----------------  x  --------------------  x  ------------------  =  43 g N₂
                        2.016 g            3 moles H₂            1 mole

Ksp(the solubility product constant) = [Cu⁺] [I⁻]

So, the Ksp for Cui would be:

Ksp = (2.26 × 10⁻⁶) (2.26 × 10⁻⁶) = 5.11 x 10⁻¹²

Formula used:

K = [tex]K_{sp} = [A^+]^a [B^-]^b[/tex], where

Ksp = solubility product constant

A⁺    = cation in an aquious solution

B⁻ = anion in an aqueous solution

a, b = relative concentrations of a and b

The equilibrium constant for a solid material dissolving in an aqueous solution is the SOLUBILITY PRODUCT CONSTANT, Ksp. It stands for the degree of solute dissolution in solution. A substance's Ksp value increases with how soluble it is.

Take into account the general dissolving response (in aqueous solutions) below:

                           aA(s)⇔cC(aq)+dD(aq)

The molarities or concentrations of the products (cC and dD) must be multiplied in order to find the Ksp. Any product that has a coefficient in front of it must be raised to the power of that coefficient (and also multiply the concentration by that coefficient).

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There are some types of properties about the substance that you tested did you use to determine whether you thought it was an acid or base. Some are given below.

Substances that are used to determine whether a particular substance is an acid or  base are called indicator. The indicator is a dye that is weak an organic acid or base that changes color when it is added to an acid and base.

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The theoretical yield isopentyl acetate is of the 1.82 g

Now the theoretical yield is the yield of the product as obtained from the stoichiometry of the reaction. In this case, we know the reaction is 1:1.

Mass of  isopentyl alcohol = 0.810 g/mL * 1.5 mL = 1.215 g

Mass of acetic acid = 1.05 g/mL * 2 mL = 2.1 g

Number of moles of  isopentyl alcohol = 1.215 g/88 g/mol = 0.014 moles

Number of moles of acetic acid = 2.1 g /60 g/mol = 0.035 moles

Hence   isopentyl alcohol is the limiting reactant.

1 mole of   isopentyl alcohol yields 1 mole of isopentyl acetate

0.014 moles   isopentyl alcohol yields 0.014 moles of isopentyl acetate

Mass of of isopentyl acetate = 0.014 moles * 130 g/mol = 1.82 g

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The potassium hydroxide is an unsuitable medium because an aqueous solution medium is highly polar in nature, so there will be a high tendency for carbonation to be formed and prefer substitution reaction rather than an elimination reaction.

The potassium hydroxide is an unsuitable medium for effecting the base-promoted elimination due to the fact that alkoxide anions aren't only more basic than the pure hydroxyl group, but they may be also bulkier. The higher bulkiness makes it a worse nucleophile than hydroxyl and the higher basicity makes it better at E2 eliminations.

A substitution reaction is a form of Chemical reaction in which the functional group of 1 chemical compound is substituted by means of any other group or it's miles a reaction that involves the substitute of one atom or a molecule of a compound with another atom or molecule.

Carbonation is the chemical reaction of carbon dioxide to provide carbonates, bicarbonates, and carbonic acid. In chemistry, the term is sometimes used in place of carboxylation, which refers to the formation of carboxylic acids.

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The iron ion's charge is +2 in iron (II) sulfate, which is denoted by the symbol (II).

Information about iron (II) sulfate:

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Answer:

The correct answer is D. Stating the point of the text in a few brief statements.

Explanation:

The whole idea of a summary is to effectively restate the text by only focusing on the main points.

Hope this helps:) Good luck!

Myoglobin in red slow twitch muscle pulls the O2 off the blood. Your striated muscles, which include your cardiac muscles and skeletal muscles, contain the protein known as myoglobin. Its primary job is to give your muscles' cells oxygen (myocytes). Your body's cells require oxygen to function.

Myoglobin is harmful to the kidneys in large doses. Myoglobin can be released in large volumes into the blood stream in response to severe trauma or muscle injuries, which can harm the kidneys and eventually lead to renal failure. A globin and heme molecule combine to form the dark red protein known as myoglobin.

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Answer:

Au2O3

Explanation:

See attachment.

A gas bottle contains 8. 61×1023 oxygen molecules at a temperature of 359. 0 k then the thermal energy of the gas is 6.35KJ.

Thermal energy is the energy contained within a system which is responsible for its temperature. Heat is also termed as flow of thermal energy.

Thermal energy is directly proportional to the temperature. As temperature increase thermal energy increases.

Given,

temperature = 395K

Number of oxygen molecules= 8.61 × 10^(23)

Firstly we will calculate the number of moles = N/A

where A is the avagadro number = 6.022 × 10^(23)

number of moles = 8.61 × 10^(23)/6.022 ×10^(23)

number of moles = 1.42moles

Using the energy equation,

E = 3/2 × nRT

where R is the gas constant = 8.314J/molK

E = 3/2 × 1.42 × 8.314 × 359

= 6357.4J

= 6.35KJ

Thus, we found that the thermal energy of the gas is 6.35KJ.

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Emphysema can lead to respiratory acidosis acid/base disturbance.The compensated respiratory acidosis is typically the result of the chronic condition  , the slow nature of onset giving the kidney time to compensate.

If the primary acid-base disorder is from respiratory , then the kidneys will compensate. If the primary acid-base disorder is from metabolic cause, then the lungs will compensate.The respiratory compensation can be begin within minutes and becomes maximal in 12-24 hours

The respiratory acidosis occurs when breathing out does not get of enough [tex]CO_{2}[/tex] . The increased [tex]CO_{2}[/tex] that  remains results in overly acidic blood. This can results from respiratory problems.

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Answer:

I believe as sharing bit

Answer:

easement

Explanation:

This is the definition of 'easement' .

Answer:

2.5 moles ZnO

Explanation:

To find the amount of moles, you need to use a mole-to-mole ratio between ZnS and ZnO. The mole-to-mole is made up of the coefficients in the balanced equation.

4 ZnS + 6 O₂ -----> 4 ZnO + 4 SO₂

2.5 moles ZnS         4 moles ZnO
-----------------------  x  -----------------------  = 2.5 moles ZnO
                                  4 moles ZnS

**While the chemical equation is technically balanced, it does not exist in the smallest mole ratio as possible. Each coefficient can be divided by 2.**

2 ZnS + 3 O₂ -----> 2 ZnO + 2 SO₂

Balanced chemical equation is  -  3Fe2+ + NO3- + 4H+ → 3Fe3+ + NO + 2H2O

Fe2+ + NO3- + H+ → Fe3+ + NO3- + NO + H2O

Fe+22+ + N+5O-23- + H+1+ → Fe+33+ + N+5O-23- + N+2O-2 + H+12O

3Fe2+ + NO3- + 4H+ → 3Fe3+ + NO + 2H2O

A balanced chemical equation specifies the quantities of reactants and products required to meet the Law of Conservation of Mass. This signifies that there is the same number of each sort of atom on the left side of the equation as there are on the right side. The rule of a balanced chemical equation is used to determine if two weights put on opposing sides of the fulcrum will balance each other.

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The name of CuO is copper II oxide and its bond type is ionic or electrovalent bond.

An ionic or electrovalent bond is the type of chemical bond where two atoms or molecules are connected to each other by electrostatic attraction.

This electrostatic attraction is as a result of the transfer of electrons from the metallic element to the non-metal.

According to this question, CuO is a chemical compound consisting of two elements namely; copper and oxygen. The compound name is copper II oxide.

Copper as a metal transfers electrons to oxygen atoms, hence, an ionic bond is formed between the molecules.

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Out of the many tests that is used to determine the presence of cyclohexanol in a product is the Lucas test.

The Lucas test is a chemical reactant that is used to identify the presence and level of alcoholism in a given solution.  Cyclohexanol shows many chemical properties as do most substances, one of those property is the presence of an alcohol group.

The presence of this chemical group makes it possible to test for cyclohexanol using the Lucas test. The Lucas test will cause reactions in the presence of alcohol and convert alcohols into chloroalkanes, which is nearly insoluble in aquatic solutions.

From above, we concluded that a positive result will look like the solution separates into a cloudy chloroalkane-containing part on top of a much clearer layer.

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