Consider the following ionic
compounds and determine which
has the higher melting point.

A. BeCl₂

B.Al₂S3

The concentrations of all reactants and products at equilibrium are listed below.

Chemical equilibrium is the condition in which there is no net change in the amount of reactants or products during a reversible chemical reaction. The moment the products are produced in a reversible chemical reaction, they begin to interact with the initial reactants.

Equilibrium is characterized as a state of equilibrium or a stable situation in which conflicting forces balance one another out and no changes are taking place. In terms of economics, equilibrium occurs when supply and demand are equal. When you are composed and steady, you are in an equilibrium state.

H 2(g)​ +I 2(g)​ ⇌2HI (g)

​ K c​ = [HI] 2/[H 2​ ][I 2​ ] ​ =54.7

⇒[H 2​ ][I 2​ ]= ​ [HI 2 ]​ / K c

∵[HI]=0.5 mol litre^ −1 ;

∴[H 2​ ][I 2​ ]= 54.8[0.5]^2 ​ =4.56×10 −3

If HI is dissociated, there will be an equal concentration of H2 and I2 at equilibrium. Thus,

[H 2 ]=[I 2 ]

⇒[H 2 ] 2=4.56×10 −3

⇒[H 2 ]=0.068 mol litre ^−1

⇒[I 2​ ]=0.068 mol litre ^−1

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Question:

At 700 K, the equilibrium constant for the reaction;

H 2(g)​ +I 2(g)​ ⇌2HI

(g)​  is 54.8.If 0.5 mol litre −1  of HI (g)  is present at equilibrium at 700 K, what are the concentrations of H 2(g)  and I 2(g)​  assuming that we initially started with HI (g)  and allowed it to reach equilibrium at 700 K.

Answer: Chemical energy

Explanation:

Answer:

a

Explanation:

The orbital diagram of Mo+6 show the number of paired and unpaired electrons of the ion.

An orbital diagram is defined as the type of diagram that shows the paired and unpaired electrons of an element or an ion.

The given element is known as molybdenum (Mo) with the atomic number of 42.

The ionic molybdenum (Mo+6) contains only 36 electrons as 6 electrons has been donated out.The ion given = Mo+6

The orbital diagram is as follows:

1s²= ¶¶

2s²= ¶¶

2p⁶=¶¶ ¶¶ ¶¶

3s²= ¶¶

3p⁶= ¶¶ ¶¶ ¶¶

3d¹⁰= ¶¶ ¶¶ ¶¶ ¶¶ ¶¶

4s²= ¶¶

4p⁶= ¶¶ ¶¶ ¶¶

The symbol ¶ is used to show the number of electrons in each ground state of the given ion.

In order words, the summary of electronic configuration of Mo+6 =

1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶

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Pyrolysis is the most popular recycling method for recovering carbon fiber from composite trash because it essentially burns off the resin at high temperatures.

It has long been asserted that solvolysis, which dissolves the resin using a solvent, offers superior qualities.

The Cycle of Carbon

Plants absorb carbon from the atmosphere.

Animals and plants both absorb carbon.

Animals and vegetation release carbon into the soil.

Living beings release carbon into the atmosphere.

When fuels are burned, carbon is released from fossil fuels into the atmosphere.

Oceans receive carbon from the atmosphere.

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The pH of a solution obtained when 135mL of 0.616 M NaOH is diluted to 16.0 L with water is 2.28.

The pH of a solution is the degree of acidity or alkalinity of a solution.

The pH of a solution can be calculated by using the following equation;

pH = - log {H+}

However, the molarity or concentration of the NaOH solution must first be calculated as follows:

C₁V₁ = C₂V₂

Where;

135 × 0.616 = C × 16000

83.16 = 16000C

C = 0.0052M

pH of NaOH = - log {0.0052}

pH = 2.28

Therefore, the pH of the NaOH solution is 2.28.

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The difference that we can obtain for the calculation of the two step and the one step process is -150 J

In general, the study of heat is what we generally refer to as thermodynamics. Recall that heat has a number of visible effects on a substance such as the increase in the temperature of the substance as well as a change in the state of the substance.

With this in mind, let us try to obtain the heat for the two step process as well as in the one step process as we can see from the question that we have before us just above in this context.

For the first part of the two step process, the heat is obtained from;

q = p dV

q =  2.00 atm (2.95 L - 5.90) = -5.9 atm L or -598 J

For the second step of the two step process

q = 2.5 (2.36 L -  2.95) = -149 J

Total heat for the two step  process =  -598 J + (-149 J) = -747 J

The value of the heat from the one step process is obtained as;

q = 2.5(2.36 L  -  5.90L)

q = -897 J

Difference between q for the two-step process and q for the one-step process in joules;

-897 J - ( -747 J) = -150 J

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The balanced equation of the reaction could be written as; [tex]HN_{5} O_{3} + Mg ------ > MgO + HNO_{3}[/tex]

We know that in chemistry, the term reaction has to do with the combination of two or more species to give a product. Now the process of the reaction would alter the chemical composition of the reactants as we move on the way to get the ne substances called the products. There would be a breaking down of the bonds that holds the reactant molecules together and then there is a recombination of the atoms in a different way so as to obtain the products of the reaction. This is how a chemical reaction takes place in a given system.

In this case we have the oxidation of the compound called [tex]HN_{5} O_{3}[/tex]. In this case, the compound is actually being oxidized as we can see from the process that would be shown in the reaction equation accurately.

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The number of plants in the water  is the independent (testing) variable.

Anything that may vary or be altered is considered a variable. In other words, it is any factor in an experiment that may be modified, controlled for, or assessed.

Scientists cannot ascribe changes or discrepancies in outcomes to a single source when more than one variable is altered in an experiment. The outcomes may be directly ascribed to the independent variable by looking at and modifying one variable at a time.

In an experiment, the independent variable is a manipulated variable. It's termed "manipulated" because it can be changed. In other words, you may choose whether to raise or reduce it ahead of time.

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The conditions of the pressure and the temperature where all the phases coexists.

A phase diagram is a diagram that shows the point where all the phases of matter coexists at equilibrium. This phase digram consists of the melting-freezing line, sublimation-deposition line and the

The point where all these lines coexists in equilibrium or intersects is known as the triple point.

he triple point is as marked in the diagram below;

Answer: 34.951 g of KBr is the amount in 445mL of .660M KBr.

Explanation:  The solute is what is dissolved in the solvent.  In this case the solute is KBr.  The Molecular weight of KBr is 119.002g

Molarity  = n/V, so  .660 M = x moles/1L, so it's .660 moles/L.

.660 mol KBr x 119.002 g KBr/1 mole KBr = 78.541 grams of KBr in one mole of KBr.

78.541 g KBr/1 mol KBr = X g of KBr/0.445 L KBr   cross multiply and divide to get grams of KBr in 445mL (which is the same as 0.445 L

Therefore, 34.951 g of KBr is the amount in 445mL of .660M KBr.

Answer: D

Explanation: calcium chloride doesn't have any hydrogen bonds, it's most soluble in alcohol.

The milliliters of oxcarbazepine a child who weighs 52.6 pounds should be prescribed considering the medication is served as a suspension of 60.0 mg /ml is 3.53 ml.

the average dosage of oxcarbazepine = 9.00 mg/kg

1 pound = 0.454kg

weight of the child = 52.6 pounds = 23.58 kg

now, dosage of oxcarbazepine for 23.58 kg is = 9.00 mg/kg × 23.58 kg

                                                                              = 212 mg

it is given that prescribed medicine is  60 mg dose is present in 1 ml of solution . so,

212 mg of dose present in :

= (1 ml / 60 mg) × 212 mg

= 3.53 ml

Thus, The milliliters of oxcarbazepine a child who weighs 52.6 pounds should be prescribed considering the medication is served as a suspension of 60.0 mg /ml is 3.53 ml.

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The equilibrium constant Kp of the reaction is 0.334 .

The equilibrium constant Kp is calculated as follows;

Equation of reaction: 2A(g) + B(g) ⇄ 2 C(g)

Using an ICE table

         A                            B                        C

I      3.00 atm               1.00 atm               0.00 atm

C    - 2x atm                 - x atm                  + 2x atm

E    (3.00 - 2x) atm       (1.00 - x )atm        2x atm

Total pressure = 3.10 atm

Initial pressure of A = 3.00 atm

Initil pressure of B = 1.00 atm

(3.00 - 2x) atm + (1.00 - x ) + (0.00 + 2x) atm = 3.10 atm

4.00 - 2x atm = 3.10 atm

-2x atm = -0.90 atm

x = 0.45 atm

2x = 0.90 atm

C = 0.90 atm

B = 1.00 - 0.45 = 0.55 atm

A = 3.00 - 0.90 = 2.10 atm

Kp = [C]² / [A]² * [B]

Kp =  0.90² / 2.10² * 0.55

Kp = 0.334

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The pH of the buffer after adding HCl is 4.08.

The pH of a solution is the negative logarithm of the hydrogen ion concentration of the solution.

The pH of a buffer solution is calculated using the Henderson-Hasselbalch equation shown below:

pH = pKa + log (base/acid)

pKa of the acid is calculated as follows:

pKa = - log Ka

Ka of propanoic acid = 1.34 × 10⁻⁵

pKa = - log 1.34 × 10⁻⁵

pKa = 4.87

Initial moles of acid = 0.310 × 1.40 = 0.434

Initial moles of base = 0.111 × 1.40 = 0.155

0.073 mole of HCl is added to the buffer

moles of base after reacting with HCl = 0.155 - 0.073 = 0.082

moles of acid after addition of HCl = 0.434 + 0.073 = 0.507

The pH of the buffer after adding HCl will be:

pH = 4.87 + log(0.082/0.507)

pH = 4.87 - 0.79

pH = 4.08

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The electronic configuration of Lithium is 1s²2s¹.

The configuration notation allows scientists to clearly describe and record how electrons are positioned around an atom's nucleus. As a result, it is simpler to comprehend and anticipate how atoms will interact to create chemical bonds.

Lithium is the third element with a total of three electrons. We shall describe the lithium electron configuration with the first two electrons in the 1s orbital. Li's third electron is in the 2s orbital since there can only be two electrons in the 1s orbital. Therefore, Li's electron configuration will be 1s22s1.

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Based on the image above of Silver from the periodic table, the isotope that would be the most abundant is Ag-107.

Isotopes are atoms of the same element that differ from each other by their mass.

The difference in the mass of isotopes of elements is due to the difference in the number of neutrons in the nucleus.

The relative atomic mass of an element is the sum of the isotopic mass and relative abundances of the isotopes.

The relative atomic mass of an element is closer to the value of the isotope with the greatest relative abundance.

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Peter measured the height of a plant five times then the measurements is the least precise is 15.5 cm

Measurement precision is the numerically using measure of imprecision as that standard deviation then calculated from the result by carrying replicate measurement and here given measurements are 15.5 cm, 19.4 cm, 15.6 cm, 15.8 cm, 15.9 cm and in that measurements the least precise are 15.5 cm

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The concentration of hydrogen ions [H⁺] ions is 10⁻⁵ and hydroxide ions [OH⁻] ions is 10⁻⁹ in a solution of pH of 5. A) a solution that has a pH of 5 has more hydrogen ions than hydroxide ions.

C)when dealing with pH of 5, you are dealing with acid.

pH = - log [H⁺]

pH is given = 5

therefore,

5 = - log [H⁺]

[H⁺] = 10⁻⁵

now,  [H⁺]   [OH⁻] = 10⁻¹⁴

           10⁻⁵  [OH⁻] = 10⁻¹⁴

             [OH⁻] = 10⁻⁹

A solution that has pH below 7 is acidic solution with higher hydrogen ion concentration.

Thus, The concentration of hydrogen ions [H⁺] ions is 10⁻⁵ and hydroxide ions [OH⁻] ions is 10⁻⁹ in a solution of pH of 5. A) a solution that has a pH of 5 has more hydrogen ions than hydroxide ions.

C)when dealing with pH of 5, you are dealing with acid.

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The number of moles of oxygen produced if 353.7 KJ of heat energy is absorbed is 0.75 mole

The balanced equation for the reaction is given below:

6Fe₂O₃ --> 4Fe₃O₄ (s) + O₂ (g) ΔH = 471.6 KJ

Considering the equation,

6 moles of Fe₂O₃ produced 1 mole of O₂

Thus, we can say that:

When 471.6 KJ of heat were absorbed, 1 mole of O₂ was formed.

With the above, information, we can obtain the mole of O₂ formed when 353.7 KJ of heat is absorbed. Details below.

From the balanced equation above,

When 471.6 KJ of heat were absorbed, 1 mole of O₂ was formed

Therefore,

When 353.7 KJ of heat are absorbed = (353.7 KJ × 1 mole) / 471.6 KJ = 0.75 mole of O₂ is formed

Thus, we can conclude that the mole of oxygen formed is 0.75 mole

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Is it possible to predict whether a precipitate will likely be white or a color other than white based on the position of the cation's element in the periodic table then the precipitate is determined by qualitative analysis

Precipitation is the formation of a solid in a solution or inside another solid during a chemical reaction or by diffusion in a solid

Here the composition of relatively complex mixture of metal ion can be determined by using qualitative analysis then in group 1 there are insoluble chlorides in that most metal chloride salt are soluble in water and if no precipitate is form then this cation are not present in significant amount and when white precipitate is formed by the solution of AgNO₃ is added to an acidified unknown solution then white precipitate indicate that presence of Cl⁻ ions whereas all chromates are usually yellow orange or red precipitate

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Using the following equation:

Where M represents the concentration (Molarity), n represents the number of moles of solute and L represents the liters of solution.

If we replace the values of the problem:

To find the number of grams, what we do is to multiply by the molar mass of MgCl2, which is 95.211g:

Therefore, 72.26gMgCl2 are needed.

According to the given statement the volcano an eruption in the near future is confirmed.

The correct option is B.

An eruption occurs whenever lava and gas are expelled from a volcano, frequently in an explosive manner. The most hazardous sort of eruption is known as a "glowing landslide," which happens when freshly erupted lava rolls down a volcano's flanks. They can move faster and efficiently heats of 1,200 degrees F.

Due to the extreme heat found deep within the Earth, certain rocks gradually melt and condense into lava. Magna chambers are places where magma rises and collects because it is lighter than that of the solid rock around it. Eventually, some of the lava rushes through cracks and vents to the Earth's crust.

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The transformation of inputs into outputs is referred to as the production process.

A production process is a way to use economic resources, such as labor, expensive machinery, or land, to create goods and services for customers.

The transformation of inputs into outputs is referred to as the production process. The primary categories include mass, batch, job, just-in-time, and flexible manufacturing systems.

A production process is a method of delivering goods and services to clients while utilizing resources or economic inputs like labor, expensive machinery, or land.

Therefore, the correct answer is option A. analyze existing resources, such as water availability

The complete question is:

Society decides that it needs to produce more corn to feed the growing population. What must it do before it begins the production process?

A. analyze existing resources, such as water availability

B. determine how people will receive the surplus crops

C. study the profitability of increasing corn production

D. understand who is in a position of authority to produce more

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1. The final temperature is 768 Kelvin.

2. the final pressure is 29.1 atm

Temperature is described as a physical quantity that expresses the hotness of matter or radiation.

We will use the equations of the adiabatic process:

Pressure is described as the force applied perpendicular to the surface of an object per unit area over which that force is distributed.

P11 ^ = P22

P2 = P1 (12)^

1.00 atm = (1/ 0.09)^ 7/5

P2 = 29.1 atm.

2 = 1 (1/2)−1

T2 = = 293 K ( 1 / 0.09)^ (7/5)^−1

T2 = 768 kelvin

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Answer:

I don't know but I do know that you need grammarly.

Explanation:

This sentence is grammatically correct, but its wordy, and hard to read.

Answer:

45.2662%

Explanation:

The sum of the chemicals (sodium chloride) and (Baking powder) and (water) is 151.9, The Salt(sodium chloride) is 29.8 grams and as a percent is 0.298%. 151.9x0.298=45.2662%, happy to help any other time!

The net ionic equation for the reaction between aqueous (NH₄)₃PO₄ and aqueous  Zn(NO₃)₂ to form solid Zn₃(PO₄)₂ and aqueous NH₄NO₃ is:

Net ionic equations are equations that show only the reactant ions that are involved in the formation of a non-ionic product.

In a net ionic equation, the spectator ions or the ions which appear on both sides of the reaction are eliminated.

Considering the given reaction between aqueous (NH₄)₃PO₄ and aqueous  Zn(NO₃)₂ to form solid Zn₃(PO₄)₂ and aqueous NH₄NO₃:

The molecular equation is given below:

(NH₄)₃PO₄ (aq)  + Zn(NO₃)₂ (aq) ----> Zn₃(PO₄)₂ (s)  + NH₄NO₃ (aq)

The net ionic equation is:

PO₄³⁻ (aq)  + Zn²⁺ (aq) ----> Zn₃(PO₄)₂ (s)

The product  Zn₃(PO₄)₂ is insoluble and is obtained as a precipitate.

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Answer:

Thermal energy

Explanation:

The exhaust from a car that cannot be used is called thermal energy since it's impossible to reuse its energy.

The exhaust from a car contains thermal energy used.  Scientists often refer to thermal energy that cannot be used as waste energy.

Thermal energy is defined as a type of energy which is contained within a system which is responsible for temperature rise.Heat is a type of thermal energy.It is concerned with the first law of thermodynamics.

Thermal energy arises from friction and drag.It includes the internal energy or enthalpy of a body of matter and radiation.It is related to internal energy and heat .It arises when a substance whose molecules or atoms are vibrating faster.

These vibrating molecules and atoms collide and as a result of which heat is generated in a substance , more the collision of particles , higher is the thermal energy.

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