complete ionic equations are equations that show blank.target 1 of 3 net ionic equations are equations that show .target 2 of 3 molecular equations are equations that show blank.T/F

Answers

Answer 1

The formula represents dissociated free ions as dissolved ionic compounds. An illustration is AgNO3(aq) + NaCl(aq) = AgCl(s) + NaNO3 (aq).

How may a whole ionic equation be converted into a net ionic equation?

We only need to take out the spectator ions in order to formulate the net ionic equation. We are left with the net ionic equation after removing the spectator ions! The net ionic equation can be obtained by repeating this procedure for any reaction.

What does a total reaction mean?

When a reaction reaches equilibrium, or when the concentrations of the reactants and products stop changing, it is said to be "finished." The answer becomes more straightforward if the equilibrium constant is large: the reaction is complete when the concentration of a reactant reaches zero.

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Related Questions

similarities between nuclear and chemical reaction​

Answers

Answer:

In both nuclear and chemical reactions, reactants combine to give a product.

A chemist was decomposing ammonium hydroxide using the apparatus given above to form two products A and B. Product A was in
gaseous form and was collected in the test tube attached to the right limb of the U tube. Product B was in liquid form and was absorbed
by calcium oxide in the U tube during the experiment
Which of the following options correctly lists Product A and Product B respectively?

Answers

Based on the information provided, it can be concluded that Product A is in Gaseous Form while product B is in Liquid Form.

What happen when ammonium hydroxide is decomposed?

When ammonium hydroxide (NH4OH) is decomposed, it undergoes a chemical reaction that results in the formation of two products: nitrogen gas (N2) and water (H2O). The chemical equation for the decomposition of ammonium hydroxide is:

2NH4OH → N2 + 2H2O + heat

What type of reaction is decomposition of ammonium hydroxide?

This reaction is an exothermic reaction, meaning that heat is released during the reaction. The heat can be used to drive the reaction forward, but it also needs to be controlled to prevent the reaction from becoming too energetic and damaging the equipment.

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What was the law Marie Curie discovered through her experiment?

Answers

The connection between temperature and magnesium is now known as Curie’s law.

The law that Marie Curie discovered through her experiment was Law of Radioactive Decay. The correct option is b.

The Law of Radioactive Decay was discovered as a result of Marie Curie's ground-breaking radiation experiments. She noticed that as some materials spontaneously disintegrate over time, radiation is released from them.

The law was developed as a result of the constant rate of decay. According to the Law of Radioactive Decay, a material's radioactive decay rate is proportional to how much of the radioactive substance is present.

This discovery transformed how we think about atomic structure, opened the door for more developments in nuclear physics, and brought Marie Curie the 1903 Nobel Prize in Physics.

Thus, the correct option is b.

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Your question seems incomplete, the probable complete question is:

What was the law Marie Curie discovered through her experiment?

a) Law of Conservation of Energy

b) Law of Radioactive Decay

c) Law of Universal Gravitation

d) Law of Electromagnetic Induction

You are given wither the pH or pOH of a solution. Calculate the other and identify whether the solution is acidic, basic, or neutral.

Answers

In a given situation, the formula; pH = 14 - pOH can be used to obtain the if the solution is  acidic, basic, or neutral.

How do you calculate the pH?

We know that the pH of a solution has to do with the concentration of the hydrogen ions that we have in that solution while the pOH of the solution has to do with the concentration of the hydroxide ions in the solutions.

If we have said this, it is worthy of note that we can be able to obtain the pH or the pOH of a solution is either of them has been given and we can be able to that by the use of simple formula that can be able to yield for us any of the parameters that have not been given in the question that we have as shown above.

Using the formula;

pH = 14 - pOH can give either the pH or the pOH of the solution.

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Be sure to answer all parts. A chemist mixes solid AgCl, CuCl2, and MgCl2 in enough water to give a final volume of 50.0 mL. (a) With ions shown as spheres and solvent molecules omitted for clarity, which of the following best represents the resulting mixture? Scene A Scene B Scene C Scene D (b) If each sphere represents 3.2 × 10−3 mol of ions, what is the total concentration of dissolved (separated) ions? M ions (c) What is the total mass of solid?

Answers

There are two types of mixture, one is homogeneous mixture and other is heterogeneous mixture. Therefore, the correct option is option A among all the given options.

What is mixture?

When two or more compounds are combined but each ingredient retains its chemical identity, the result is referred to as a mixture. In other words, there is no chemical interaction between the parts of a combination. According to how consistent they are and how well the components' particle sizes match up, mixtures are categorized.

Out of AgCl, CuCl[tex]_2[/tex] and MgCl[tex]_2[/tex], CuCl[tex]_2[/tex] and MgCl[tex]_2[/tex] are soluble in water while AgCl is soluble in water. So, molecules of AgCl will settled down in the mixture. The correct representation of mixture is A.

Therefore, the correct option is option A.

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Explain the principles behind an acid-base titration. What is an indicator?

Answers

An acid–base titration is a method of quantitative analysis for determining the concentration of an acid or base by exactly neutralizing it with a standard solution of base or acid having known concentration. A pH indicator is used to monitor the progress of the acid–base reaction.

There is no change in the concentration of the reactants or the products.

When a reversible process reaches equilibrium,

The forward reaction rate is the same as the backward reaction rate.

The quantity of product being formed is therefore equal to the quantity of reactant being formed in a given amount of time.

Therefore, for a reversible reaction at equilibrium, both the reactant concentration and the product concentration are constant.

Indicators can be used to roughly determine the equivalence point of an acid-base titration as this colour shift only happens over a narrow pH range.

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The principle behind the acid-base titration is that at the equivalence point , is where the no. of moles of the OH⁻ and H⁺ is equals. . indicator is the dye that color depends on the acidity or the basicity of solution.

The principles in which the acid - base titration is based on is that at the equivalence point the number of the moles of the OH⁻  ions and the number of moles of the  H⁺ both are equals. in the neutralization reactions the acid and the base will react and form the salt and the water.

An indicator is the dye or the chemical substances the will indicates the nature of the acidic and the basic solution.

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Consider the nuclear equation below.

Which is the missing value that will balance the equation?

Answers

The balanced nuclear equation is as follows;

²²₁₁Na ---> ²²₁₀Ne + ⁰₋₁β

The correct answer is -1; option A.

What are nuclear equations?

Nuclear equations are equations that show the changes that occur in the nucleus of atoms of elements.

The various types of nuclear reactions such as radiation decay, nuclear fusion, and nuclear fission are all represented by nuclear equations, which show the reactants and products. Atomic mass and proton number are conserved in nuclear reactions, as opposed to chemical equations, which demonstrate that the number of distinct elements is conserved in a reaction.

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what is the pH of 0.093 M KNO2

Answers

The pH of your solution is 8.06.

In a reaction, 2-methylbutan-1-ol is oxidised by potassium dichromate. Write equations for the two oxidation steps of this reaction and then name and draw (as displayed
formula) the two products of this reaction.

Answers

The oxidation of 2-methylbutan-1-ol (also known as isobutyl alcohol) by potassium dichromate is a two-step process. In the first step, the alcohol is oxidized to an aldehyde:

2-methylbutan-1-ol + K₂Cr₂O₇ + H₂SO₄ (oxidising agent) → 2-methylbutanal + K₂SO₄ + Cr₂(SO₄)3 + H₂O

In the second step, the aldehyde is further oxidized to a carboxylic acid:

2-methylbutanal + K₂Cr₂O₇ + H₂SO₄ (oxidizing agent) → 2-methylbutanoic acid +  K₂SO₄ + Cr₂(SO₄)3 + H₂O

The first product is 2-methylbutanal, the structural formula of which is

H₃C-C(H)(OH)-CH₃

The second product is 2-methylbutanoic acid, the structural formula of which is

H₃C-C(H)(COOH)-CH₃

What is the reaction about?

In the first step of the reaction, 2-methylbutan-1-ol is oxidized to 2-methylbutanal by potassium dichromate (K₂Cr₂O₇) in the presence of sulfuric acid (H₂SO₄) as a catalyst.

The sulfuric acid catalyzes the breakdown of potassium dichromate into its active form, chromic acid (H₂CrO₄), which is the actual oxidizing agent in this reaction.

In the second step, the aldehyde produced in the first step is further oxidized to a carboxylic acid by the same reagents (K₂Cr₂O₇ and (H₂SO₄), this time the aldehyde is oxidized by the chromic acid to form the carboxylic acid.

In the second step, the aldehyde group (C=O) is oxidized to a carboxyl group (COOH) and a hydrogen atom is lost from the adjacent carbon atom. This results in the formation of the carboxylic acid.

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Consider the following balanced reaction between hydrogen and nitrogen to form ammonia:
3H2(g)+N2(g)→2NH3(g)
How many moles of NH3 can be produced from 30.0 mol of H2 and excess N2 ?

Express the number of moles to three significant figures.

Answers

Taking into account the reaction stoichiometry, 20.0 moles of NH₃ can be produced from 30.0 mol of H₂ and excess N₂.

Reaction stoichiometry

In first place, the balanced reaction is:

3 H₂ + N₂  → 2 NH₃

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

H₂: 3 molesN₂: 1 moleNH₃: 2 moles

Moles of NH₃ formed

The following rule of three can be applied: if by reaction stoichiometry 3 moles of H₂ form 2 moles of NH₃, 30 moles of H₂ form how many moles of NH₃?

moles of NH₃= (30 moles of H₂×2 moles of NH₃)÷ 3 moles of H₂

moles of NH₃= 20 moles

Finally, 20.0 moles of NH₃ can be produced.

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QUESTION 1
An ion is formed when
O a. electrons are shared
b. electrons remain in place
c. neutrons are added to the nucleus
O d. electrons are gained or lost

Answers

An ion is formed electrons are gained or lost.

What is electron ?

An electron might be attached to an atom or be free. The subatomic particle known as an electron is negatively charged (not bound). In an atom, protons, neutrons, and an electron that is bound to an atom make up the three primary particle kinds. A proton, a neutron, and an electron make up an atom's nucleus.

What is ion ?

Ions are electrically charged particles that can be produced by either removing electrons from neutral atoms to produce positive ions or adding electrons to neutral atoms to produce negative ions.

Therefore, An ion is formed electrons are gained or lost.

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1. A passenger elevator travels from the first floor to the 60th floor, a distance
of 210 m, in 35 s. What is the elevator's speed?

Answers

To solve this we must be knowing each and every concept behind speed. Therefore, 6m/s  is the elevator's speed when  elevator travels from the first floor to the 60th floor, a distance of 210 m, in 35 s.

What is speed?

Speed may be defined as the distance traveled by an item in the amount of time it requires to travel that distance. In other words, it measures how rapidly an item travels but does not provide direction. The term "velocity" refers to the combination of direction and speed.

The Scientific unit system is most typically used to express speed. Rate is given in metres per second, or m/s, since distance is defined in metres as well as time is recorded in seconds.

Mathematically,

speed=distance/time

Distance=210m

Time=35s

Substituting all the given values in the above equation, we get

speed= 210/35

           =6m/s

Therefore, 6m/s  is the elevator's speed.

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State, in terms of chemical bonds, what occurs when a chemical reaction has taken place:

Answers

When a chemical reaction takes place, chemical bonds between atoms or molecules are broken and new bonds are formed. This results in the formation of new substances with different chemical and physical properties than the reactants. The breaking and formation of chemical bonds involve the transfer or sharing of electrons between atoms or molecules, which alters the distribution of electrons in the reactants and products. The process of chemical reactions is governed by the laws of thermodynamics and kinetics, ensuring that the reactions are energetically favorable and can occur at specific rates.

What mass of solid La(I03)3 (663.6 g/mol) is formed when 50.0 mL of 0.250 M La³+ are mixed
with 75.0 mL of 0.302 M I03?

Answers

Answer:

To solve this problem, you need to use the mole ratios between the reactants to calculate how many moles of each reactant are used. The mole ratio between La³+ and La(I03)3 is 1:1 because there is one mole of La³+ for every mole of La(I03)3 that is produced. Similarly, the mole ratio between I03 and La(I03)3 is 3:1 because there are 3 moles of I03 for every mole of La(I03)3.

Using these mole ratios, you can calculate how many moles of each reactant are used in the reaction. First, you need to convert the volumes of the reactants to moles using their concentrations. The number of moles of La³+ is given by:

n(La³+) = (50.0 mL) * (0.250 M) = 12.5 moles

The number of moles of I03 is given by:

n(I03) = (75.0 mL) * (0.302 M) = 22.6 moles

Since the mole ratio between La³+ and La(I03)3 is 1:1, the number of moles of La(I03)3 produced is equal to the number of moles of La³+ used, which is 12.5 moles. The mass of La(I03)3 produced is then given by:

m(La(I03)3) = (12.5 moles) * (663.6 g/mol) = 8292.0 g

So, a mass of 8292.0 g of La(I03)3 is formed when 50.0 mL of 0.250 M La³+ are mixed with 75.0 mL of 0.302 M I03.

Explanation:

Carbon reacts with four Hydrogen's to form methane through ionic bonding. Each hydrogen donates one electron to Carbon therefore having a filled outer shell with 8 electrons.
True
False

Lithium has an oxidation of +1, and Fluorine an oxidation of -1, therefore if they reacted they would only need one atom of each to become stable.

Question 4 options:
True
False

If Magnesium and chlorine reacted, it would require two Magnesium and one chlorine to become stable.

Question 5 options:
True
False

If Calcium reacts with Nitrogen, the proper ratio of atoms to become stable would be 3 calcium's and two Nitrogen's.

Question 6 options:
True
False

When water forms, two hydrogen atoms covalently bond with one oxygen atom, and Hydrogen through this electron sharing takes on the electron configuration of helium (duet), and oxygen takes on the electron configuration of Neon (Octet).

Question 7 options:
True
False

Answers

There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, the given statement is false.

What is chemical Compound?

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

Carbon reacts with four Hydrogen's to form methane through covalent bonding. Each hydrogen donates one electron to Carbon therefore having a filled outer shell with 8 electrons.

Therefore, the given statement is false.

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How many atoms of potassium make up 5.37 moles?

Answers

For every mole of potassium, there are 6.022 1023 potassium atoms. 6.0221023 K atoms make up one mole of KOH, which has one mole of K in it.

How do you find atoms in a mole?12 grammes of pure carbon-12 weigh exactly one mole, which is equal to 6.022 x 1023 atoms in that amount of carbon. • Avogadro's Number is the number of particles in a mole (6.0221421 x 1023).A substance's volume is measured in moles, which are 6.022 x 1023 units (such as atoms, molecules, or ions). Avogadro's number or Avogadro's constant is the quantity 6.022 1023. You can convert between particle mass and number using the idea of a mole. Sal Khan invented it.You may write this equation as follows: Number of Atoms or Molecules = (Number of Moles)*(6.022*1023) the link between a gramme and an atomic mass unit (amu).

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For every mole of potassium, there are 6.022 1023 potassium atoms. 6.0221023 K atoms make up one mole of KOH, which has one mole of K in it.

How do you find atoms in a mole?

12 grammes of pure carbon-12 weigh exactly one mole, which is equal to 6.022 x 1023 atoms in that amount of carbon. • Avogadro's Number is the number of particles in a mole (6.0221421 x 1023).

A substance's volume is measured in moles, which are 6.022 x 1023 units (such as atoms, molecules, or ions). Avogadro's number or Avogadro's constant is the quantity 6.022 1023. You can convert between particle mass and number using the idea of a mole. Sal Khan invented it.

You may write this equation as follows: Number of Atoms or Molecules = (Number of Moles)*(6.022*1023) the link between a gramme and an atomic mass unit (amu).

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Some properties of substance X are listed. ●It conducts electricity when molten. ●It has a high melting point. ●It burns in oxygen and the product dissolves in water to give a solution with pH 11. what is X? A a covalent compound B a macromolecule C a metal D an ionic compound​

Answers

An ionic compound is one that dissolves in water to produce a solution with a pH of 11, has a high melting point, conducts electricity when molten, and burns in oxygen.

What are ionic compounds, exactly?

Positively charged ions, which are sometimes called as cations, and negatively charged ions, also called as anions together constitute an ionic compound, which are neutral substances. The name of the cation is written first, followed by the name of the anion, in case of binary ionic compounds (ionic compounds that only contain two types of elements).

What is the difference between covalent and ionic compounds?

An atom can establish bonds with other atoms in two main ways: covalent and ionic. Sharing of electrons between two or more atoms is involved in case of covalent bonding. When two or more ions come together, they can form ionic bonds that are held together by charge differences.

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Glide: a new approach for rapid, accurate docking and scoring. 1. Method and assessment of docking accuracy.

Answers

Glide is a new approach for rapid and accurate docking and scoring developed by Schrödinger, Inc.

It is based on a force field-based scoring function and uses a hierarchical search algorithm to generate a set of docking poses. Glide is designed to be used in a wide range of applications, such as virtual screening, lead optimization, and drug design. It has been assessed to have excellent accuracy and precision when compared to other docking methods.

Glide is a fast and accurate docking and scoring approach developed by Schrödinger, Inc. It is based on a force field-based scoring function and uses a hierarchical search algorithm to generate a set of docking poses.

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the products formed from the reaction of halogenoalkane + ethanolic aqueous silver nitrate​

Answers

Answer:

Silver nitrate solution can be used to find out which halogen is present in a suspected halogenoalkane. The most effective way is to do a substitution reaction which turns the halogen into a halide ion, and then to test for that ion with silver nitrate solution

Sulfur dioxide gas, a form of smog, is formed when sulfur burms with oxygen from the air. How many liters of sulfur dioxide gas would be released at STP if we burned 2.50 moles of sulfur with plenty of oxygen? ​

Answers

Answer:

The amount of sulfur dioxide gas released at STP would be 22.4 liters, which is calculated using the ideal gas law: PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the universal gas constant, and T is temperature. In this case, n = 2.50 moles, R = 0.0821 L·atm/mol·K, T = 273 K (0°C), and P = 1 atm. Thus, V = (2.50 mol)(0.0821 L·atm/mol·K)(273 K)/(1 atm) = 22.4 L.

Explanation:

Account for the low reactivity of chlorobenzene toward Ag+

Answers

The resonance structures that result form the reaction of chlorobenzene toward Ag^+ are unstable hence the low reactivity.

Why is there low reactivity?

Let us recall that the kind of reaction that is going to occur here is the nucleophilic reaction. The implication of that is that the center that is going to be attacked is a center that is positive.

We now have to look at the structure of the chlorobenzene as we can see from the structures of the resonance of the compound that have been shown in the image attached.

The resonance structures that are formed by the compound are not stable and such the attacked does not lead to the production of chemical species that are stable and this is why the reactivity of the chlorobenzene towards the sliver ion is low.

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In the reaction of ammonia (NH3) with oxygen (O) to produce water and nitric oxide (NO), how many moles of water are produced when 4.3 moles of ammonia are
reacted?

Answers

4.3 moles of water are produced when 4.3 moles of ammonia are reacted.

What are Moles?

Moles are a unit of measurement used in chemistry to measure the number of atoms or molecules in a given sample of a substance. The mole is defined as the amount of a substance that contains 6.02 x 10^23 of molecules or atoms. This number is known as Avogadro's number.

The reaction for the production of water and nitric oxide from ammonia and oxygen is as follows:

NH3 + O2 → H2O + NO

In order to calculate the number of moles of water produced when 4.3 moles of ammonia are reacted, we need to use the mole ratio between the reactants and the products. The mole ratio for this reaction is 1:1:1, meaning that one mole of ammonia reacts with one mole of oxygen to produce one mole of water and one mole of nitric oxide.

Therefore, 4.3 moles of ammonia will react with 4.3 moles of oxygen to produce 4.3 moles of water and 4.3 moles of nitric oxide.

Hence, 4.3 moles of water are produced when 4.3 moles of ammonia are reacted.

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A company is designing a new cell phone. They need a solid material that conducts electricity and can be made into a thin wire.

Which material would best fit their needs?

Answers

Answer:

Copper

Explanation:

Copper has excellent electrical conductivity, as well as malleability and ductility, making it easy to form into thin wires. Hope this helps!

Put in order how to process film: Below is a sequence of events. Place them in the order they should occur, number 1 being the first item. Select the step number from the drop down next to each item. Items to order: 1 Wetting agent 2. Presoak 3. Stop bath 4. Fixer 5. Final wash 6. First wash 7. Fixer removal 8. Developer Wetting agent 1 Presoak 1 Stop bath 1 Fixer 1 Final wash 1 First wash 1 Fixer removal 1 Developer

Answers

The sequence of events used to process film in film photography s:

Stop bathWetting agentPresoakFixerFirst washFixer removalDeveloperFinal wash

How Does Film Photography Work?

The practice of shooting pictures on the thin, clear plastic strips we refer to as film is known as film photography. The contrast and resolution of a photograph are determined by the gelatin emulsion that is coated on one side of the film strip. This emulsion contains tiny silver halide crystals.

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Answer:

Processing film starts with you loading a film reel and putting it in a light tight tank.

You will then do these steps in order for set times: water presoak, developer, stop bath, fixer, first wash, fixer remover, final wash, wetting agent, and then finally drying your film.

Explanation:

Took the test.

The equation AX + BY → AY + BX is the general equation for what kind of reaction?

A. synthesis reaction
B. decomposition reaction
C. single displacement reaction
D. double displacement reaction

Answers

Answer:

D. double displacement reaction

Socraticorg

D is going to be the correct answer for this question. Have a great day

The element with an outer electron configuration of ns2np4
with the highest ionization energy.

Answers

Answer:

The unknown element has a smaller ionization energy than Fluorine.

Explanation:

The unknown element has six valence electrons which means that it belongs to Group 6A of the periodic table.

How many kilojoules of heat will be released when exactly 1 mole of iron, Fe, is burned to form Fe2O3 (s) at standard state conditions? (Use Appendix G in text.)
412 kJ
824 kJ
1650 kJ

Answers

The heat of formation, or enthalpy of formation, of a compound, can be found in a reference such as the appendix of a textbook or a thermochemistry table. The heat of the formation of Fe2O3(s) is -824 kJ/mol. It represents the heat change that occurs when one mole of Fe2O3 is formed from its elements under standard state conditions. So the answer is 824 kJ will be released.

The heat of formation, also known as enthalpy of formation, is the heat energy change that occurs when a substance is formed from its element under standard state conditions. It is usually expressed in kJ/mol.

When we are dealing with the combustion of a substance, this value is used to determine how much heat is released or absorbed in the process. In this case, the substance is iron and we need to form Fe2O3.

To find the amount of heat released, we can use the heat of formation value of Fe2O3, which is -824 kJ/mol.

Since the value is negative, this means that 824 kJ of heat is released when 1 mole of Fe is burned to form Fe2O3 under standard state conditions.

It is also important to note that these values are usually provided at a specific temperature, usually at 25 degrees Celsius, and standard pressure.

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If the ionization constant of water, Kw, at 40°C is 2.92×10^-14, then what is the hydronium ion concentration for a neutral solution?.
Thank you

Answers

The concentration of the hydronium ion is 1.71 * 10^-8 M.

What is the hydronium concentration?

Let us call to mind the fact that the acidity of a solution has to do with the degree or the concentration of the hydronium ions that can be found in the solution.

Now, we know that;

Kw = [tex][H_{3} O^+] [OH^-][/tex]

Since the concentration of the hydronium ion is equal to the concentration of the hydroxide ion, we now have;

2.92×10^-14 = [tex][H_{3} O^+]^{2}[/tex]

[tex][H_{3} O^+][/tex] = √2.92×10^-14

[tex][H_{3} O^+][/tex] = 1.71 * 10^-8 M

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Express the equilibrium constant for the following reaction.
6Na(s)+6H₂O(l)+⥂6NaOH (aq) +₃H₂(g)
K= [ Na ]⁶ [ H₂O ]⁶ / [ NaOH ]⁶ [ H₂ ] ³
K = [ H₂ ] [ NaOH ]⁻²
K = [ NaOH ] ¹/²[ H₂ ] / [ Na] ¹/² [ H₂O ]¹/²
K = [ NaOH ]⁶ [ H₂O ] ³ / [ Na ]⁶ [ H₂O ]⁶
K = [ H₂ ] ³ [ NaOH ]⁶

Answers

The equilibrium constant for the given reaction is:

K = [H₂]³[NaOH]⁶ (last option)

How do I determine the equilibrium constant?

We know that equilibrium constant is defined as the ratio of the concentration of products raised to their coefficient to the ratio of the concentration of reactants raised to their coefficients.

However, equilibrium constant expression does not contains certain phases of a reaction. These includes:

Solid reatantsSolid productsLiquid or solvent reactantsLiquid or solvent products

Also, equilibrium constant expression must contain the following if they appear in the reaction:

Gasous reactantsGasous productsAqueous reactantsAqueous products.

With the above information, we can obtain the equilibrium constant for the given reaction as follow:

6Na(s) + 6H₂O(l)+⥂6NaOH (aq) + 3H₂(g)

Equilibrium constant, K = [H₂]³[NaOH]⁶

Thus, we can conclude that the correct answer to the question is:

K = [H₂]³[NaOH]⁶ (last option)

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A farmer prepared 100 g of an aqueous solution of KNO3 in which the mole fraction of KNO, was 0.1. Calculate the amount of KNO3 dissolved. (Atomic masses are: K= 39.1 amu, N = 14 amu and O = 16 amu). ​

Answers

The amount of [tex]KNO_3[/tex] dissolved would be 1011 grams.

Mole fraction

The mole fraction of a component of a substance is the ratio of the mole of the component relative to the mole of the whole substance.

Thus, for a mole fraction of KNO to be 0.1, it means 1 mole of KNO relative to 10 moles of KNO3.

In other words, the number of moles of [tex]KNO_3[/tex] dissolved is 10 moles.

Recall that: mole = mass/molar mass, and mass = mole x molar mass

Molar mass of [tex]KNO_3[/tex] = 39.1 + 14 + (16 x 3) = 101.1 g/mol

Mass of 10 moles of [tex]KNO_3[/tex] = 10 x 101.1

                                             = 1011 grams

In other words, the amount of [tex]KNO_3[/tex] dissolved is 1011 grams.

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