Answer: The ions present in a given solution of silver nitrate are [tex]Ag^+,NO_3^-[/tex]
Explanation:
Silver nitrate is a strong electrolyte because it displaces into its ions in aqueous solution.
The chemical reaction for the ionization of silver nitrate solution follows the equation:
[tex]AgNO_3(aq.)\rightarrow Ag^+(aq.)+NO_3^-(aq.)[/tex]
By Stoichiometry of the reaction:
1 mole of silver nitrate solution ionizes into 1 mole of silver ions and 1 mole of nitrate ions.
Hence, the ions present in a given solution of silver nitrate are [tex]Ag^+,NO_3^-[/tex]
The chemical formula is[tex]\boxed{{\text{A}}{{\text{g}}^ + }{\text{,N}}{{\text{O}}_{\text{3}}}^ - }[/tex].
The phases of ions are[tex]\boxed{{\text{aqeuous phase}}}[/tex].
Further explanation:
Ionic compound:
Ionic compounds are those compounds formed from the ions of the species. Ions are the species that are formed due to the loss or gain of electrons. Cation forms by the loss of electrons and anion forms by the gain of electrons in a neutral atom.
Some of the properties of ionic compounds are as follows:
1. These are hard solids.
2. They have high melting and boiling points.
3. They are considered as good conductors of heat and electricity.
Ionic reaction:
Ionic reaction is a type of chemical reaction in which molecules in aqueous solution dissociate to form ions. In ionic reaction, the net charge is same on both sides.
[tex]{\text{AgN}}{{\text{O}}_{\text{3}}}[/tex]is a strong electrolyte and dissociates into ions in the aqueous solution. The reaction for dissociation of [tex]{\text{AgN}}{{\text{O}}_{\text{3}}}[/tex] solution is:
[tex]{\text{AgN}}{{\text{O}}_{\text{3}}}\left({aq}\right)\to{\text{A}}{{\text{g}}^+}\left({aq}\right)+{\text{N}}{{\text{O}}_{\text{3}}}^-\left({aq}\right)[/tex]
In this reaction, 1 mole of [tex]{\text{AgN}}{{\text{O}}_{\text{3}}}[/tex] dissociates to form 1 mole of [tex]{\text{A}}{{\text{g}}^+}[/tex] and 1 mole of [tex]{\text{N}}{{\text{O}}_{\text{3}}}^-[/tex].
Therefore, ions present in the solution of silver nitrate are [tex]{\text{A}}{{\text{g}}^+}[/tex], [tex]{\text{N}}{{\text{O}}_{\text{3}}}^-[/tex]. As ions are formed in solution only, so the phase of both the ions is aqueous phase.
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Answer details:
Grade: High School
Subject: Chemistry
Chapter: Chemical compound
Keywords: Ionic compound, aqueous solution, good conductor, high enthalpy, ions, dissociates, AgNO3, Ag+ and NO3-.
Sensitivity analysis is concerned with how certain changes affect
a. the feasible solution.
b. the degenerative solution.
c. the optimal solution.
d. the unconstrained solution.
Final answer:
Sensitivity analysis is concerned with how changes in variables or assumptions impact the optimal solution of a model, assisting in decision-making by evaluating the solution's robustness under different conditions. The correct option is C.
Explanation:
Sensitivity analysis is primarily concerned with understanding how changes in certain variables or assumptions affect the outcome of a model. Specifically, this type of analysis is focused on the impact of these changes on the optimal solution. It systematically alters key assumptions, computations, or input data, comparing the new results against the original model to assess the variance. This process is valuable in both analytical and computational approaches to solve constrained optimization problems. By exploring the comparative statics analysis, sensitivity analysis helps in determining how a firm, for instance, would respond to changes in one of its exogenous variables, holding all else constant (ceteris paribus).
In essence, sensitivity analysis serves as a critical tool in decision-making processes, assisting in evaluating the robustness and reliability of an optimal solution under varying conditions.
Why does naphthalene have a higher melting point than biphenyl?
Naphthalene has a higher melting point than biphenyl because naphthalene is a polar compound while biphenyl is a non-polar compound. Studies show that polar compounds have higher melting and boiling points than nonpolar compounds. It is because polar compounds have strong intermolecular forces.
Final answer:
Naphthalene has a higher melting point than biphenyl due to its compact structure with fused benzene rings, resulting in greater π-electron delocalization and stronger intermolecular forces. The fulfillment of Hückel's rule with its 10 π electrons also contributes to naphthalene's stability and higher melting point.
Explanation:
Naphthalene has a higher melting point than biphenyl because of its structural differences and the stronger intermolecular forces that result from these differences. Naphthalene is composed of two fused benzene rings, which means it has a more compact structure and a greater degree of π-electron delocalization than biphenyl, which consists of two benzene rings connected by a single bond.
The π-electron delocalization in naphthalene contributes to a greater stability and a higher degree of symmetry than biphenyl, which in turn leads to stronger intermolecular forces, namely London dispersion forces. Furthermore, naphthalene fulfills Hückel's rule with its 10 π electrons, which provides additional stability due to the filled bonding molecular orbitals. These factors result in a higher energy requirement to overcome the intermolecular forces in naphthalene, thereby giving it a higher melting point compared to biphenyl.
A deficiency of ADH in the body causes which disease
Calcium hydroxide reacts with carbon dioxide to form calcium carbonate (balanced equation given below). if you start with 155 ml of a 1.25 m solution of calcium hydroxide and add 10.0 g of carbon dioxide, how much calcium carbonate would be formed?
Which of the groups highlgihted in the periodic table in the periodic table?
The isotope of an atom containing 40 protons and 51 neutrons suddenly has two neutrons added to it.What isotope is created
The correct answer is
Zirconium-93
Since nothing else matches up with 40 protons and 51 neutrons
So your answer is
Zirconium-93
List two assumptions of the Kinetic Molecular Theory.
Answer :
These are 5 assumptions of the kinetic molecular theory.
The first assumption is that the gases are made up of the tiny or small particles. The small particles has undefined volume but has a defined volume.
The second assumption is that the gas particles are in the continuous, rapid and random motion.
The third assumption is that the there is no force of attraction between gas particles.
The fourth assumption is that the temperature of a gas particles depends on the average kinetic energy of the particles of the gas.
The fifth assumption is that the collisions between the particles of the gas are completely elastic. That means there is no loss or gain of the energy when the particles of the gas colloid.
A sample of propane (C3H8) has a mass of 0.47 g. The sample is burned in a bomb calorimeter that has a mass of 1.350 kg and a specific heat of 5.82 J/(g • °C). How much energy is released by the reaction if the temperature of the calorimeter rises by 2.87°C?
Use mc018-1.jpg.
7.85 kJ
10.6 kJ
22.5 kJ
47.9 kJ
Answer:
22.5kJ
Explanation:
your welcome
In the balanced equation for the reaction: xp4o6(s) + yh2o(l) → zh3po3(aq) if x equals 2, the coefficient z equals:
When balancing the equation given xP₄O₆ + yH₂O -> zH₃PO₃with x equals 2, we need 8 molecules of H₃PO₃ to balance the phosphorus atoms, making the coefficient z equal to 8.
The question asks about balancing the chemical equation xP₄O₆(s) + yH₂O(l) -----> zH₃PO₃(aq) with the given condition that x equals 2. To balance the equation, we need to ensure that the number of each type of atom is the same on both sides of the equation. When x equals 2, this implies we have 2 P₄O₆ units leading to 8 phosphorus atoms in total. Each H₃PO₃ molecule contains one phosphorus atom, so we would need 8 molecules of H₃PO₃ to balance the phosphorus atoms. Thus, the coefficient z would be 8 in a balanced equation.
Indicate which factors affect the rate of a reaction. select all that apply. temperature δs o keq δg o δh o ea concentration k catalysts
Is a ph = 7.00 solution acidic, basic, or neutral at 37 °c?
At 37°C, a solution with a pH of 7.00 is slightly basic, because the neutral pH at this temperature is around 6.31.
A solution with a pH of 7.00 is typically considered neutral at a standard temperature of 25°C. However, the pH scale is temperature-dependent, meaning the pH for neutrality changes with temperature. At 37°C, which is around the normal human body temperature, the neutral pH is not 7.00, but rather closer to 6.31 because the ionization constant of water (Kw) changes with temperature.
In the specific instance of a solution with a pH of 7.00 at 37°C, we would consider it to be slightly basic. This is because, at 37°C, the neutral pH is approximately 6.31, and any pH above this value represents a basic solution, while a pH below this value would indicate an acidic solution.
The k a for hypochlorous acid, hocl, is 3.0 × 10-8 at 25°c. calculate the pk b for hypochlorous anions.
Answer : The value of [tex]pK_b[/tex] for hypochlorous anion is, 6.47
Explanation :
As we know that,
[tex]pK_a+pK_b=pK_w\\\\pK_a+pK_b=14\\\\pK_b=14-pK_a\\\\pK_b=14-(-\log K_a)\\\\pK_b=14+\log (K_a)[/tex]
Now put the value of [tex]K_a[/tex] in this expression, we get the value of [tex]pK_b[/tex]
[tex]pK_b=14+\log (3.0\times 10^{-8})[/tex]
[tex]pK_b=14+\log 3-8[/tex]
[tex]pK_b=6.47[/tex]
Therefore, the value of [tex]pK_b[/tex] for hypochlorous anion is, 6.47
The difference between strong and weak acids is determined by the acid dissociation constant (Kₐ). As Kₐ rises, the acid dissociates more. Therefore, strong acids must dissociate more in water. On the other hand, a weak acid has a lower propensity to ionize and release a hydrogen ion, resulting in a less acidic solution.
The standard used to calculate a molecule's alkalinity is called pkb. It is employed to gauge fundamental strength. The base will be more powerful with a lower pKb value. It is akin to the base dissociation constant's negative logarithm, Kb.
The equation connecting pKa and pKb is:
pKa + pKb = pKw
pKa + pKb = 14
pKb = 14-pKa
pKb = 14 - (-log Ka)
pKb = 14 + log (3.0 × 10⁻⁸)
pKb = 14 - 7.52
pKb = 6.48
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In the electromagnetic spectrum, ________ frequencies, ________ wavenumbers, and ________ wavelengths are associated with high energy.
In the electromagnetic spectrum, high frequencies, high wavenumbers, and low wavelengths are associated with high energy.
What is electromagnetic spectrum?Electromagnetic spectrum is the range of frequencies of electromagnetic radiations and their respective wavelengths and photon energies.
Energy of a photon in electromagnetic spectrumThe energy of a single photon in an electromagnetic spectrum is calculated as;
E = hf
[tex]E = \frac{hc}{\lambda}[/tex]
where;
f is frequencyλ is the wavelengthRelationship between wavenumber and wavelength
[tex]n = \frac{1}{\lambda}[/tex]
Thus, in the electromagnetic spectrum, high frequencies, high wavenumbers, and low wavelengths are associated with high energy.
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When oxygen and aluminum form an ionic compound, what is the formula?
The correct answer is
D .al2O3
Explanation:
The offense in electronegativity is subject for the ionic bonds in aluminum and oxygen, Ionic bonds are created between cations and anions. A cation is formed when a metal ion spends a valence electron while an anion is produced when non-metal gains a valence electron. They both achieve a more stable electronic arrangement through this change.
2NH4Cl(s)+Ba(OH)2⋅8H2O(s)→2NH3(aq)+BaCl2(aq)+10H2O(l) The ΔH for this reaction is 54.8 kJ . How much energy would be absorbed if 24.7 g of NH4Cl reacts?
How much would the temperature of 275 g of water increase if 36.5 kj of heat were added?
Answer: The temperature increase will be 31.70°C.
Explanation:
To calculate the increase in the temperature of the system, we use the equation:
[tex]q=mc\Delta T[/tex]
where,
q = Heat absorbed = 36.5 kJ = 36500J
m = Mass of water = 275 g
c = Specific heat capacity of water = [tex]4.186J/g^oC[/tex]
[tex]\Delta T[/tex] = change in temperature = ? °C
Putting values in above equation, we get:
[tex]36500J=275\times 4.186J/g^oC\times \Delta T\\\\\Delta T=31.70^oC[/tex]
Hence, the temperature increase will be 31.70°C.
How many hydrogen atoms are in 8.90 mol of ammonium sulfide?
The number of hydrogen atoms in 8.90 mol of ammonium sulfide is 4.28×10²⁵ atoms.
What is Avogadro's constant?This is referred to as a proportionality factor which tells us about the number of constituent particles in a sample. The constant is 6.02ₓ 10²³.
Ammonium sulfide which is denoted as (NH4)₂S has 2 nitrogen, 8 hydrogen and 2 sulfur atoms present.
We were told that the amount of ammonium sulfide is 8.90mol.
Number of hydrogen atoms = 8/1 × 8.9 mol= 71.2 moles of H₂.
The number of Hydrogen atoms in 8.90 mol of ammonium sulfide is 71.2 moles ˣ 6.02ˣ 10²³ = 4.28 ˣ10²⁵ atoms.
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Is milkshake a solution or a mixture.
Given that 0.403 g of nitrogen combines with 0.0864 g of hydrogen and H is assigned an atomic mass of 1.00 amu calculate the atomic mass of nitrogen based on the formula NH.
Given,
Mass of nitrogen = 0.403 g
Mass of hydrogen = 0.0864 g
Atomic mass of H = 1 amu
Moles = mass / molar mass
Molar mass of H₂ = 1 x 2 = 2 g/mol
Moles of hydrogen = 0.0864 g / 2 g/mol = 0.0432 moles
Nitrogen combines with hydrogen hence the chemical equation is:
N₂ + 3H₂ → 2NH₃
As per the balanced chemical reaction, 3 moles of H₂ combines with 1 mole of N₂
or, 1 mole of H₂ combines with 1/3rd mole of N₂
Therefore, 0.0432 moles of H₂ will combine with (1/3 x 0.0432 moles of N₂)
Moles of N₂ = 0.0144 mol
Molar mass = mass / moles
Molar mass of N₂ = (0.043 g N₂) / (0.0144 mol N₂) = 2.986 g/mol of N₂
Atomic mass of N = 2.986/2 = 1.493 amu
A scientist observed a 5-mL sample of an unknown substance. It is a blue liquid with a density of 1.2 g/cm. the substance reacts with carbon dioxide. Lust each of the properties the scientist observed and whether it is a characteristic property of matter.
The scientist observed a blue liquid with a density of 1.2 g/cm³ that reacts with carbon dioxide. The blue color and reaction with carbon dioxide are characteristic properties of the substance, but density is not.
Explanation:The properties observed by the scientist are:
Blue color Density of 1.2 g/cm³ Reaction with carbon dioxide
The blue color and reaction with carbon dioxide are characteristic properties of the unknown substance.
However, density is not a characteristic property, as different substances can have the same density.
Polyatomic ions ______.
What is the magnitude of the dipole moment formed by separating a proton and an electron by 85 pm ?
The dipole moment (p) resulting from the separation of a proton and an electron by 85 pm is approximately 3.7 Debye. This is calculated using the formula p = (+e) * (85 x 10^-12 m), where e is the elementary charge.
The magnitude of the dipole moment formed by separating a proton and an electron by 85 pm is indeed approximately 3.7 D (Debye).
Dipole moment formula: The dipole moment (p) of a molecule is calculated as the product of the charge (q) separated by the distance (D) between the charges. In this case, the charges are the electron (-e) and the proton (+e), and the distance is 85 pm (picometers).
Plugging in values: e = 1.602 x 10^-19 C, D = 85 x 10^-12 m, and the distance needs to be converted to meters: 85 pm = 85 x 10^-12 m.
Calculation: p = (+e) * (85 x 10^-12 m) = 1.602 x 10^-19 C * 85 x 10^-12 m ≈ 3.7 x 10^-30 C⋅m.
Converting to Debye: Since the Debye unit (D) is a convenient unit for dipole moments, we convert the result: 3.7 x 10^-30 C⋅m ≈ 3.7 D.
Therefore, the magnitude of the dipole moment in this case is approximately 3.7 Debye.
The process of expanding air causes cooling, an adiabatic process where temperature changes without loss of heat.
Which of these molecules has the same number of shared electron pairs as unshared electron pairs? (a) hcl, (b) h2s, (c) pf3, (d) ccl2f2 (e) br2?
Let us check each molecule
a) HCl : the number of shared electron pairs is "one"
the number of unshared electron pairs is six [on chlorine]
b) H₂S : the number of shared electron pairs is "two" as there are two bonds of sulphur with two hydrogen atoms.
The number of valence electrons on sulphur are six, out of these two are involved in bonding and rest four are in the form of two unshared (lone pair) pair of electrons
So in H₂S it has the same number of shared electron pairs as unshared electron pairs
c) PF₃ : the shared pair of electrons are "three"
the number of unshared electron pairs is one on phosphorous.
d) CCl₂F₂ : there are total four shared pair of electrons on carbon and zero unshared electron pairs
e) Br₂ : only one shared electron pair and three unshared electron pairs
The molecule that has the same number of shared electron pairs as unshared electron pairs is H2S.
In a molecule, chemical bonds are formed when atoms share electrons. However, some atoms have unshared electron pairs on their valence shells. These unshared electron pairs are called lone pairs and are localized on one of the atoms in the bond.
In the molecule H2S. There are two lone pairs or unshared pairs on sulfur and there are two shared pairs of electrons in the molecule. Hence the molecule that has the same number of shared electron pairs as unshared electron pairs is H2S.
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write the balance equation for dehydration
of cyclohexanol
The balanced equation is written as;
C₆H₁₁OH (cyclohexanol) → C₆H₁₀(cyclohexene) + H₂O (water)
How to determine the equationThe balanced chemical equation for the dehydration of cyclohexanol C₆H₁₁OH to form cyclohexene (C6H10) is as follows:
C₆H₁₁OH (cyclohexanol) → C₆H₁₀(cyclohexene) + H₂O (water)
This equation represents the removal of a water molecule (H2O) from cyclohexanol to produce cyclohexene.
The process is typically carried out with the help of an acid catalyst, such as concentrated sulfuric acid (H₂SO₄).
The balanced equation shows that one molecule of cyclohexanol yields one molecule of cyclohexene and one molecule of water.
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The dehydration of cyclohexanol results in the formation of cyclohexene and water. This reaction is acid-catalyzed and proceeds through protonation, formation of a carbocation, and deprotonation steps. The balanced equation is C₆H₁₂O → C₆H₁₀ + H₂O.
Dehydration of Cyclohexanol
The process of dehydration involves the removal of water (H₂O) from a molecule. The dehydration of cyclohexanol (C₆H₁₂O) to form cyclohexene (C₆H₁₀) is an example of this type of reaction. This reaction is typically catalyzed by an acid such as phosphoric acid (H₃PO₄) or sulfuric acid (H₂SO₄).
Balanced Equation:C₆H₁₂O (cyclohexanol) → C₆H₁₀ (cyclohexene) + H₂O
The following is a step-by-step mechanism for the dehydration of cyclohexanol:Protonation: Cyclohexanol receives a proton (H⁺) from the acid catalyst, forming a protonated cyclohexanol.Formation of Carbocation: The protonated cyclohexanol loses a water molecule, forming a carbocation intermediate.Deprotonation: The carbocation loses a proton, resulting in the formation of cyclohexene.The final product, cyclohexene, is an alkene that results from the elimination of water from cyclohexanol.
A stream of air (21 mole% o2, the rest n2) flowing at a rate of 10.0 kg/h is mixed with a stream of co2. the co2 enters the mixer at a rate of 20:0 m3/h at 150°c and 1.5 bar. what is the mole percent of co2 in the product stream?
To determine the mole percent of CO2 in a stream of mixed gases, one would first calculate the moles of each gas. The mole percent of CO2 in this case can be calculated as approximately 73%.
Explanation:The mole percent of CO2 in the product stream can be calculated by determining the number of mols of each gas and then using these values to calculate the mole fractions. First, we need to calculate the number of mols for air and CO2 separately.
Initial air is given as 10.0 kg/h, and it is composed of 21 moles% O2 and the rest is N2. Given that the molar mass of O2 is approximately 32 g/mol and N2 is approximately 28 g/mol, this gives us a total of approximately 0.289 moles of air per second. Next, the number of moles of CO2 entering the mixer can be calculated using the ideal gas law formula PV=nRT. Assuming standard pressure for this equation, we get approximately 0.784 moles of CO2 per second.
Finally, the mole percent of CO2 in the product could be calculated as the number of moles of CO2 divided by the total number of moles (number of moles of CO2 + number of moles of air) multiplied by 100. Plugging in the values gives us approximately 73% mole percent of CO2 in the product.
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How many atoms are in 5g of Fe2O3
The chemical equation below shows the combustion of methane (CH4).
CH4 + 2O2 mc031-1.jpg CO2 + 2H2O
The molar mass of oxygen gas (O2) is 32.00 g/mol. The molar mass of carbon dioxide (CO2) is 44.01 g/mol. What mass of CO2, in grams, will form when 8.94 g O2 completely react?
3.25
6.15
13.0
53.0
Answer:
B
Explanation:
edg 2020
Name the type of reaction and give the coefficients needed to balance the following skeleton reaction: ___Mg + ___Fe2O3 → ___Fe + ___MgO
Mg + Fe2O3→ Fe +mgO
The coefficients needed to balance the reaction above is 3, 1,2,3
the reaction is a single replacement reaction/ single displacement reaction
The balanced equation is is therefore
= 3Mg + Fe2O3 → 2Fe + 3MgO
The equation above is balanced since it obey the law of mass conservation. that is the number of atom in side of reactant is equal to number of atoms in product side.for example there is 3 atoms of Mg in reactant side and 3 atoms of Mg in product side.The reaction is a single replacement reaction because Mg replaces Fe from its compound.
The given reaction is a redox reaction known as a single displacement or single replacement reaction. The coefficients needed to balance the equation are as follows:
2Mg + Fe₂O₃ → 2Fe + 3MgO
A single displacement reaction, also known as a single replacement reaction, is a type of chemical reaction in which an element or ion in a compound is replaced by another element. In this reaction, one element is displaced from its compound and takes the place of another element, resulting in the formation of a new compound. The general format of a single displacement reaction can be represented as:
A + BC → AC + B
Where A is the element that displaces B from the compound BC, leading to the formation of the new compound AC. This type of reaction is often observed in reactions involving metals and their salts, where a more reactive metal displaces a less reactive metal from its salt solution. The reactivity of the elements involved determines the feasibility and outcome of the reaction.
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Matt and Brad own a ice cream store and they believe they have the best ice cream in town. They invite ten of their closest friends to their ice cream shop, give them free ice cream, and then ask for their opinions. Brad and Matt encouraged their friends to try other ice cream shops, but they told them that they would have to buy the ice cream there. After a week, Matt and Brad took all the participants out to dinner and 90% of the "tasters" voted Matt and Brad's shop to be the best in town. Which of these would NOT lead to bias in this experiment?
A)Matt and Brad took the participants to dinner.
B)Only ten participants were used in the experiment.
C)Only friends were used in the experiment, and friends will quite often be nice to each other.
D)The "tasters" received free ice cream from Matt and Brad, but they had to pay for it at the other shops.