Aqueous hydrobromic acid (HBr) will react with solid sodium hydroxide ( NaOH ) to produce aqueous sodium bromide (NaBr) and liquid water ( H,O ) Suppose 7.3 g of hydrobromic acid is mixed with 6.44 g of sodium hydroxide. Calculate the maximum mass of sodium bromide that could be profuced by the chemleal reaction, Round your answer to 2 significant sigits. Aqueous hydrobromic acd (HBr) will react with solid sodium hydroxide ( NaOH) to produce aqueous sodium bromide (NaBr) and liquid water (H.O). Suppose 7.3 g of hydrobromic acid is mixed with 6.44 g of sodium hydroxide. Calculate the maximum mass of sodium bromide that couid be produced by the chemical reaction. Round your answer to 2 significant digits.

The molarity of the given solution is 0.0214 M.a. The molar mass of NaHSO4 is 120.06 g/mol No. of moles of NaHSO4 = (100 g) / (120.06 g/mol)= 0.832 mol The volume of the solution is 3 L.Molarity = (0.832 mol) / (3 L) = 0.277 MThe molarity of the given solution is 0.277 M.

b. The molar mass of KNO3 is 101.11 g/molNo. of moles of KNO3 = (250 g) / (101.11 g/mol)= 2.47 mol

The volume of the solution is 250 mL = 0.25 L.Molarity = (2.47 mol) / (0.25 L) = 9.88 MThe molarity of the given solution is 9.88 M.

c. The molar mass of NH4OH is 35.05 g/molNo. of moles of NH4OH = (75 mg) / (35.05 g/mol)= 0.00214 molThe volume of the solution is 100 mL = 0.1 L.Molarity = (0.00214 mol) / (0.1 L) = 0.0214 M

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Answer:

Ok, here is your answer

Explanation:

The given redox reaction in basic solution is:

MnO4- + C2O42- + OH- → MnO2 + CO32- + H2O

Step 1: Separate the reaction into two half-reactions

MnO4- → MnO2

C2O42- → CO32-

Step 2: Balance the atoms in each half-reaction

MnO4- → MnO2

Balance O: MnO4- → MnO2 + 2H2O

Balance H: MnO4- + 4H+ → MnO2 + 2H2O

Balance charge: MnO4- + 4H+ + 3e- → MnO2 + 2H2O

C2O42- → CO32-

Balance C: C2O42- → 2CO32-

Balance charge: C2O42- + 2OH- → 2CO32- + H2O + 2e-

Step 3: Balance electrons by multiplying half-reactions by appropriate coefficients

MnO4- + 4H+ + 3e- → MnO2 + 2H2O (Multiply by 2)

2C2O42- + 4OH- → 4CO32- + 2H2O + 4e-

Step 4: Add the two half-reactions together and cancel out common terms

2MnO4- + 8H+ + 6e- + 4C2O42- + 8OH- → 2MnO2 + 4CO32- + 4H2O + 6e-

Simplify the equation by canceling out the electrons

2MnO4- + 8H+ + 4C2O42- + 8OH- → 2MnO2 + 4CO32- + 4H2O

Step 5: Check that atoms and charges are balanced in the balanced equation

Atoms: Balance all atoms

Charge: 2(-1) + 8(+1) + 4(-2) + 8(-1) = 0

Therefore, the balanced redox reaction in basic solution is:

2MnO4- + 8H+ + 4C2O42- + 8OH- → 2MnO2 + 4CO32- + 4H2O

Malonates must bond at active site on an enzyme, and are considered enzyme inhibitor.

Malonate is a dicarboxylic acid with three carbons. It is well known as a succinate dehydrogenase competitive inhibitor.

It naturally occurs in biological systems, such as developing rat brains and legumes, indicating that it may be crucial for symbiotic nitrogen metabolism and brain growth.

Malonate ions, which closely resemble succinate ions in structure, prevent succinate dehydrogenase from completing the conversion. The malonate ions' similar shapes enable them to connect to the active site, but the absence of the CH2-CH2 link in the middle of the ion prevents any further reaction from occurring.

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In the photoelectron spectrum, the unknown element's electron configuration can be identified.

The unknown element's electron configuration is the arrangement of its electrons in shells and subshells around its nucleus.

A photoelectron spectrum is used to investigate the electronic structure of atoms and molecules.

Photoelectron spectroscopy involves irradiating a sample with photons and detecting the emitted photoelectrons. A photoelectron spectrum graph is used to depict the energies of the photoelectrons emitted from an atom as a result of the irradiation of a high-energy photon.

The photoelectron spectrum of the unknown element is shown in the figure. The energy levels are listed in eV on the x-axis, while the y-axis depicts the photoelectron counts.

Below is the unknown element's electron configuration:

Electron configuration: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶ .

The electron configuration of the unknown element is derived from the photoelectron spectrum.

The element's electron configuration is derived by comparing the binding energy levels of the photoelectrons to the known energies of the orbitals of the atom.

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The complete question is-

A) Based on the photoelectron spectrum, identify the unknown element and write its electron configuration. B) Consider the element in the periodic table that is directly to the right of the element identified in part (a). Would the 1s peak of this element appear to the left of, right of, or in the same position as the 1s peak of the element in part (a)? Explain your reasoning.

While drying the NaCl, the liquid boiled and some splattered out of the evaporating dish, causing the experimental mass to be lower. Hence option C is the correct answer.

Given data, Mass of evaporating dish

#1: 38.120 g Mass of evaporating dish #1 and original sample: 39.070 g Mass of evaporating dish #1 and sample after subliming NH4Cl: 38.944 g

(i) Mass of original sample = Mass of evaporating dish and sample after subliming NH4Cl - Mass of evaporating dish #1 Mass of original sample

= 38.944 g - 38.120 g

= 0.824 g

(ii) Mass of NH4Cl(g)

= Mass of evaporating dish and original sample - Mass of evaporating dish and sample after subliming NH4Cl Mass of NH4Cl(g)

= 39.070 g - 38.944 g

= 0.126 g

(iii) Percent by mass of NH4Cl(%)

= (mass of NH4Cl(g) / Mass of original sample) x 100% Percent by mass of NH4Cl(%)

= (0.126 g / 0.824 g) x 100%

= 15.291%

(iv) Mass of evaporating dish #2: Not given Mass of watch glass: Not given Mass of evaporating dish #2, watch glass, and NaCl: Not given

(v) Mass of NaCl(g)

= Mass of evaporating dish and NaCl - Mass of evaporating dish #2 - Mass of watch glass Mass of NaCl(g)

= (38.360 g - 38.120 g) - 20.000 g

= 0.240 g

(vi) Percent by mass of NaCl(%)

= (mass of NaCl(g) / Mass of original sample) x 100% Percent by mass of NaCl(%)

= (0.240 g / 0.824 g) x 100%

= 29.126%.

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The given values are:q = -41 J (negative sign indicates that the heat is released by the system)w = 28 JΔE = q + w= (-41 J) + 28 J= -13 J

Therefore, the answer is -13 J.

The element that has the largest first ionization energy among Ne, P, Zn, Cl, and K is Ne.

The first ionization energy (IE1) is defined as the amount of energy required to remove one mole of an electron from one mole of a gaseous element to form one mole of gaseous cation with a positive charge of 1.

The first ionization energy of an atom is determined by the nuclear charge and the atomic radius.

The nuclear charge is the number of protons in the nucleus, which determines the number of electrons, and the atomic radius is the distance between the nucleus and the outermost shell where the valence electrons are located.

The element with the highest first ionization energy would have a high nuclear charge and a small atomic radius. Among the given elements, the element that satisfies this condition is neon (Ne).

Therefore, the answer is Ne.10.

The formula for the calculation of ΔE is:ΔE

= q + w

where ΔE represents the change in internal energy of a system, q is the heat absorbed or released by the system, and w is the work done on or by the system.

The given values are:q

= -41 J (negative sign indicates that the heat is released by the system)w

= 28 JΔE

= q + w

= (-41 J) + 28 J

= -13 J

Therefore, the answer is -13 J.

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The drink that contains 2 dashes of bitters, 3/4 oz. of orange juice, 3/4 oz. of dry vermouth, and 3/4 oz. of gin is called a Satan's Whiskers cocktail. It is a classic cocktail known for its balanced flavors and is enjoyed by cocktail enthusiasts around the world.

The drink that contains the given ingredients of 2 dashes of bitters, 3/4 oz. of orange juice, 3/4 oz. of dry vermouth, and 3/4 oz. of gin is known as a "Satan's Whiskers" cocktail. The Satan's Whiskers is a classic cocktail that comes in two variations: straight and curled. The recipe you provided corresponds to the "straight" variation.

To make a Satan's Whiskers cocktail, you will need the following ingredients:

- 2 dashes of bitters (such as Angostura or orange bitters)

- 3/4 oz. of orange juice

- 3/4 oz. of dry vermouth

- 3/4 oz. of gin

To prepare the cocktail, follow these steps:

1. Fill a cocktail shaker with ice.

2. Add 2 dashes of bitters to the shaker.

3. Pour in 3/4 oz. of orange juice.

4. Add 3/4 oz. of dry vermouth.

5. Finally, pour in 3/4 oz. of gin.

6. Shake the ingredients vigorously for about 15 seconds to combine and chill the drink.

7. Strain the mixture into a chilled cocktail glass.

The Satan's Whiskers cocktail is known for its complex and balanced flavors. The bitters add depth and complexity, while the orange juice provides a refreshing citrusy note. The dry vermouth contributes herbal and slightly bitter flavors, and the gin brings a distinct botanical character to the drink. The combination of these ingredients creates a unique and enjoyable cocktail experience.

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The Lewis dot structure is given below in the image.

Lewis dot structure, often referred to as electron dot structure or Lewis structure, is a diagram that represents a molecule or an ion and displays how its atoms and valence electrons are arranged.

Each atom is represented by its chemical symbol in a Lewis dot structure, and the valence electrons are shown as dots or dashes. The sign is surrounded by dots, each of which stands for a valence electron.

In order to establish a stable electron configuration with eight valence electrons, it is necessary to distribute the valence electrons in a fashion that satisfies the octet rule, which stipulates that atoms typically gain, lose, or share electrons. The total number of valence electrons for all the atoms must be known in order to draw a Lewis dot structure.

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Buckminsterfullerene, also known as C60 or buckyball, is a unique and fascinating molecule in the field of chemistry.

It was first discovered in 1985 by a team of scientists led by Richard Smalley, Robert Curl, and Harold Kroto, who were awarded the Nobel Prize in Chemistry in 1996 for their discovery.

Buckminsterfullerene is a carbon allotrope composed of 60 carbon atoms arranged in a hollow sphere resembling a soccer ball. Its name is derived from its resemblance to the geodesic dome designs created by architect Buckminster Fuller.

One of the remarkable aspects of buckminsterfullerene is its symmetrical structure, which confers extraordinary stability. Its structure allows for the distribution of strain throughout the molecule, making it highly resistant to chemical reactions and providing exceptional thermal and mechanical stability.

Buckminsterfullerene exhibits a range of unique properties that have attracted significant scientific interest. It is an excellent electron acceptor and can undergo various chemical reactions due to its high reactivity. Its electronic properties have applications in organic electronics, photovoltaics, and molecular electronics.

Moreover, buckminsterfullerene has shown potential in various fields, including medicine, material science, and nanotechnology. Its hollow structure can encapsulate other atoms or molecules, making it useful for drug delivery systems.

In summary, buckminsterfullerene is a fascinating carbon molecule with a distinctive structure and exceptional properties. Its discovery has opened up new avenues for research and applications in chemistry, physics, materials science, and other interdisciplinary fields.

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a)  The volumetric flow rate of air entering the furnace is approximately 20.78 [tex]m^3/h.[/tex]

b) the rate of heat transfer from the furnace is approximately 15,600 kJ/h.

To solve this problem, we need to apply the principles of stoichiometry and energy balance. Let's break it down step by step:

a.)  To determine the volumetric flow rate of air, we'll use the stoichiometry of the combustion reaction. Methane ([tex]CH_4[/tex]) burns completely with air according to the following balanced equation:

[tex]CH_4[/tex]+ 2 ( [tex]O_2[/tex]+ 3.76 [tex]N_2[/tex]) -> [tex]CO_2[/tex]+ 2 [tex]H_2O[/tex] + 7.52 [tex]N_2[/tex]

Since we're given that the methane flow rate is 27 m^3/h, we can set up the equation:

27 [tex]m^3/h.[/tex] [tex]CH_4[/tex]* (2 + 3.76) = Air flow rate * 7.52

Simplifying, we find:

27 * 5.76 = Air flow rate * 7.52

Air flow rate = (27 * 5.76) / 7.52 ≈ 20.78 m^3/h

Therefore, the volumetric flow rate of air entering the furnace is approximately 20.78 [tex]m^3/h.[/tex].

b. To determine the rate of heat transfer from the furnace, we'll use the energy balance equation. The energy balance can be expressed as follows:

Q = m_air * Cp_air * (T_exit_air - T_enter_air)

Where:

Q is the rate of heat transfer (in kW),

m_air is the mass flow rate of air (in kg/h),

Cp_air is the specific heat capacity of air (assumed constant at around 1.005 kJ/kg·°C),

T_exit_air is the exit temperature of air (427°C),

T_enter_air is the entering temperature of air (127°C).

To convert the volumetric flow rate of air to mass flow rate, we'll need to consider the density of air at the given conditions. At 127°C and 1 atm, the density of air is approximately 0.941 kg/m^3.

m_air = Air flow rate * Density_air = 20.78 m^3/h * 0.941 kg/m^3 = 19.53 kg/h

Now we can substitute the values into the energy balance equation:

Q = 19.53 kg/h * 1.005 kJ/kg·°C * (427°C - 127°C) = 15,600 kJ/h

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In a three body atmospheric chemical reaction, the third molecule (M) functions as a collision partner to remove excess energy produced by the reaction and allow it to proceed. The most common third molecules in the atmosphere are nitrogen (N2), oxygen (O2), and argon (Ar).

When a third body (M) collides with two reacting molecules (A and B), it absorbs the excess energy created during the reaction and redistributes it in a random fashion. Because the third body (M) removes excess energy from the reaction, it is sometimes referred to as a collisional quencher or stabilizer.

The most prevalent third body molecules in the Earth's atmosphere are nitrogen (N2), oxygen (O2), and argon (Ar). The reaction rate is also influenced by the pressure and temperature of the atmosphere.

At a higher pressure, the reaction rate increases while at a lower pressure, the reaction rate decreases. Additionally, the reaction rate is faster at a higher temperature and slower at a lower temperature.

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Given the following chemical equation for the reaction of Cs3PO4 and AgNO3,

Cs3PO4 (aq) + 3AgNO3 (aq) → 3Ag3PO4 (s) + 3CsNO3 (aq)

If we break down this chemical equation into the ionic equation, it becomes:

Cs+3 (aq) + 3PO43- (aq) + 3Ag+ (aq) + 3NO3- (aq) → 3Ag3PO4 (s) + 3Cs+ (aq) + 3NO3- (aq)

The ionic equation above depicts the reaction of Cs3PO4 and AgNO3. This reaction results in the formation of a solid silver phosphate, Ag3PO4. The complete ionic equation indicates all of the ions involved in the reaction, whether they are aqueous or solid. While the spectator ions are those that do not participate in the reaction, they are present as both reactants and products in the reaction mixture. Spectator ions include Cs+ and NO3-. Thus, the net ionic equation is

Ag+ (aq) + PO43- (aq) → Ag3PO4 (s)

The chemical equation that is balanced completely is

3Ag+(aq) + PO43- (aq) → Ag3PO4(s).

The reaction occurs in the following manner:

Cesium phosphate (Cs3PO4) reacts with silver nitrate (AgNO3) in an aqueous solution to produce silver phosphate (Ag3PO4) and aqueous sodium nitrate (CsNO3).

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the concentrations of KI, (NH4)2S2O8, and Na2S2O3 are 0.020 ,  0.030 ,  0.000175 M. Therefore, 6.73% of the initial (NH4)2S2O8 had reacted when the blue color appears.

Part a

K+I-   + (NH4)2S2O8 → K+ + S4O6-2 + N2↑ + 4H2O

The stoichiometry of the reaction above can be utilized to determine the concentrations of KI, (NH4)2S2O8, and Na2S2O3 before any reaction has occurred.

[KI] = 0.040 M × 20.00 mL ÷ 40.00 mL

[KI]  = 0.020

M[NH4)2S2O8] = 0.060 M × 20.00 mL ÷ 40.00 mL

M[NH4)2S2O8] = 0.030

M[Na2S2O3] = 0.00070 M × 10.00 mL ÷ 40.00 mL

M[Na2S2O3] = 0.000175 M

Part b

(NH4)2S2O8 + 2KI → I2↓ + (NH4)2SO4 + K2S2O8

The iodine that formed produced a blue color with starch.

The extent of the reaction that produced the blue color is proportional to the amount of iodine produced, which is proportional to the amount of (NH4)2S2O8 reacted.

KI was present in excess, which resulted in a negligible change in concentration throughout the reaction.

Assume that the amount of (NH4)2S2O8 that reacted, x, was minor compared to its initial amount, and therefore the concentration of KI remained unchanged.

[(NH4)2S2O8]0 − x = (NH4)2S2O8,

initial ⇒ x/(NH4)2S2O8,

initial = 0.0673 = 6.73%

correct Question:

Assume that you mixed 20.00 mL of 0.040MKI with 20.00 mL of 0.060M(NH₄) 2S₂O₈, 10.00 mL of 0.00070MNa 2S₂O₃, and a few drops of starch. The point of mixing sets time =0.

(a) Calculate the concentrations of the three species KI,(NH 4) 2S₂ O₈, and Na 2S₂O₃

​after mixing but before any reaction has occurred. (1 mark) Hint: your calculated [KI] should equal 0.016M.

(b) The basis of the "Method of Initial Rates" used in this experiment, is that the concentrations of reagents are essentially unchanged during the measurement time period. Calculate the % of the initial (NH₄) 2 S₂O₈

that has reacted when the blue color appears.

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The 3d orbital experiences the most shielding from both the 3s and 3p orbitals, leading to the highest energy among the three orbitals.

In multielectron atoms, electron shielding refers to the repulsion between electrons in different energy levels.

This repulsion leads to energy differences among the 3s, 3p, and 3d orbitals. The 3s orbital experiences the least shielding because it is closer to the nucleus and shielded by fewer electrons.

Consequently, it has the lowest energy. The 3p orbital is shielded by both the 3s and 3d orbitals, resulting in higher energy.

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The mass of isopropanol is given as 42.7 g. The molar mass of isopropanol can be calculated as:

Molar mass (C3H8O) = 12.01 × 3 + 1.01 × 8 + 16.00 = 60.09 g/mol

The number of moles of isopropanol can be calculated as:

Number of moles = mass/molar mass = 42.7/60.09 = 0.7111 mol

Using the coefficients in the balanced chemical equation for the combustion of isopropanol:

C3H8O + 5 O2 → 4 H2O + 3 CO2

We can see that there are 4 H atoms in every molecule of isopropanol.

The total number of H atoms in 0.7111 mol of isopropanol can be calculated as:

Number of H atoms = 4 × Avogadro's number × number of moles

= 4 × 6.022 × 1023 × 0.7111= 1.712 × 1024

Therefore, there are 1.712 × 1024 H atoms in 42.7 g of isopropanol (C3H8O) in scientific notation.

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The percent yield of water is 98.07%.Given: 34.6 g of H2O, 52.56 g of hexane (C6H14), and 315.2 g of oxygen gas (O2)Reacting hexane with oxygen gas gives CO2 and H2O.

The balanced chemical reaction for the given reaction is as follows:

2C6H14(l) + 19O2(g) → 14CO2(g) + 14H2O(l)

Molar mass of hexane (C6H14) = 6(12.01 g/mol) + 14(1.01 g/mol) = 86.18 g/mol.

Mass of 52.56 g of hexane is given, we will find the number of moles of hexane. n(hexane) = (52.56 g) / (86.18 g/mol) = 0.609 mol

Molar mass of oxygen (O2) = 2(16.00 g/mol) = 32.00 g/mol. Number of moles of oxygen can be calculated as follows:

n(O2) = (315.2 g) / (32.00 g/mol) = 9.85 mol

Mole ratio of H2O to hexane is 7:2.

Therefore, the number of moles of water can be calculated as follows:

n(H2O) = (7/2) × n(hexane) = (7/2) × 0.609 = 2.126 mol

Mass of water that should be produced based on the number of moles of hexane consumed is given by multiplying the number of moles of hexane by the molar mass of water (18.02 g/mol).

Mass of water that should be produced = (0.609 mol) × (7/2) × (18.02 g/mol) = 35.28 gPercent yield of water can be calculated as follows:

Percent yield = (Actual yield / Theoretical yield) × 100We are given the actual yield of water.

Therefore, the percent yield can be calculated as follows:

Percent yield = (34.6 g / 35.28 g) × 100 = 98.07%

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The answer is that 0.070 milliliters is equivalent to 0.070 deciliters. The missing part of the equation is to determine what value should be multiplied by 0.070 mL to convert it to deciliters (dL).

In this case, 1 deciliter (dL) is equivalent to 100 milliliters (mL). Therefore, to convert mL to dL, the student needs to multiply the given measurement of 0.070 mL by the conversion factor of 1 dL/100 mL.

To calculate the result, the student would set up the equation as follows:

(0.070 mL) * (1 dL/100 mL) = ? dL

Now, let's explain the answer. The conversion factor of 1 dL/100 mL is derived from the relationship between milliliters and deciliters. Since 1 deciliter is equal to 100 milliliters, we express this relationship as 1 dL/100 mL. When multiplying 0.070 mL by this conversion factor, the milliliters cancel out, leaving us with the result in deciliters. The calculation would be:

0.070 mL * (1 dL/100 mL) = 0.070 dL

Therefore, the answer is that 0.070 milliliters is equivalent to 0.070 deciliters.

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The empirical formula of the given mineral hausmannite that is a compound of manganese-55 and oxygen-16 is: Mn₃O₄

The parameters in the given question are:

Percentage of Manganese (Mn) is: 72%

Percentage of Oxygen (O) is:  100 – 72 = 28%

Molar mass of Mn is 55 and Molar Mass of Oxygen is 16. Thus:

Ratio of Mn = 72 / 55 = 1.309

Ratio of O = 28 / 16 = 1.75

Divide by the smallest to get:

Mn = 1.309 / 1.309 = 1

O = 1.75 / 1.309 = 1.34

Multiply by 3 to express in whole number

Mn = 1 × 3 = 3

O = 1.34 × 3 ≈ 4

Thus, the empirical formula is: Mn₃O₄

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Complete Question is:

The mineral hausmannite is a compound of manganese-55 and oxygen-16. If 72% of the mass of hausmannite is due to manganese, what is the empirical formula of Hausmannite? socratic.org

Modelling of block copolymers produces porous nanostructured carbons with easily accessible nitrogen, improving their chemical (electrical) performance for catalytic and energy storage applications.

Mass copolymer modelling refers to a method of creating porous nanostructured carbon atoms with easily accessible nitrogen, thereby improving their chemical (electrical) performance. In this process, a bulk copolymer is used as a template, guiding the formation of carbon materials with specific pore structures.

The resulting porous carbon material provides a high surface area and exposes nitrogen atoms that can participate in various chemical reactions, making the material advantageous for applications such as storage devices. energy storage or catalyst.

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The steady-state approximation is a technique for obtaining the rate laws of reactions that have at least one fast and at least one slow step. The technique's goal is to determine the rate law based on the rate-limiting step.

The steady-state approximation assumes that the rate of formation of an unstable intermediate or its consumption rate is approximately equal. The rate of change of the intermediate's concentration is negligible after a brief moment.To derive the rate law for dissociative substitution of a generic metal carbonyl (LmM-CO) with an incoming ligand L, follow the steps below:Consider the following reaction: LmM-CO + L ⇌ LmM-L + COAt this point, we need to make an assumption that the rate of dissociative substitution (k1) is much slower than the rate of ligand association (k-1) and the rate of CO rebinding (k2).k1 << k-1, k2Using the steady-state approximation, we will find an expression for the intermediate, LmM-CO.

Let x be the concentration of the intermediate LmM-CO;

therefore,x = [LmM-CO]d[x]/dt = 0 since the concentration of the intermediate does not change significantly at any point in time.

d[x]/dt = k-1([L][LmM-CO] - [LmM-L][CO]) - k2([LmM-CO] - [LmM-L][CO]) + k1([LmM-L][CO] - [LmM-CO][L])=0

Now we solve for [LmM-CO] and simplify the equation by assuming that

[CO] ≈ [LmM-CO]. [LmM-CO] = [L][LmM-L]k-1 + k2[LmM-L] - k1[L]

Rearranging the above equation,

LmM-CO + L ⇌ LmM-L + CO, rate law = k[L][LmM-CO]/([L][LmM-L]k-1 + k2[LmM-L] + k1)

which is the same as equation 4.29 in Crabtree.

Hence we have derived the rate law using the steady-state approximation, which is given by equation 4.29.

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To make dilutions for the spectrophotometer experiment, you will need to use the formula: C1V1 = C2V2 C1 represents the initial concentration of the stock solution, V1 represents the initial volume of the stock solution, C2 represents the desired concentration of the diluted solution, V2 represents the final volume of the diluted solution.


To make the dilutions, you will need to determine the desired concentration for each diluted solution. Let's say you want to make five dilutions. You will start with a stock solution, which has a known concentration. For each dilution, you will use the formula C1V1 = C2V2 to calculate the volumes required. First, you will select the volume of the stock solution you want to use (V1).

Then, you will select the desired concentration for the diluted solution (C2). Next, you will calculate the volume of the diluted solution needed (V2). For example, if you want to dilute the stock solution by a factor of 10, you would divide the initial concentration (C1) by 10 to get the desired concentration (C2). Finally, using the formula C1V1 = C2V2, you would solve for V2. Once you have the volume of the diluted solution, you can add the appropriate amount of solvent to reach the desired volume. Repeat this process for each dilution, adjusting the desired concentration and volumes accordingly.

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Answer:

The pH scale measures acidity of a substance. known as potential of hydrogen, it varies from 0 to 14 with 7 being the pH value of a neutral solution. Below 7 shows the substance is acidic in nature and above 7 is alkaline in nature. pH 0-3 are considered strong acids while pH 4-6 are weak acids. pH 8-10 are weak alkalines and pH 11-14 are strong alkalines. This is a general trend and there may be exeptions especially if the substance has a negative pH. However, it would not be covered likely unless you are doing university chemistry.

A substance with a higher specific heat value will be more resistant to temperature changes. The specific heat of a substance is the amount of heat energy required to raise the temperature of a given amount of the substance by a certain amount.

The higher the specific heat value, the more heat energy is needed to raise the temperature of the substance. In the given statement, it is mentioned that water has a high specific heat due to the hydrogen bonding between water molecules. This means that it takes more heat energy to raise the temperature of water compared to other substances like ethyl alcohol or benzene.

Therefore, a substance with a higher specific heat value, like water in this case, will be more resistant to temperature changes. This means that it will take longer for the temperature of water to change compared to substances with lower specific heat values.

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The molar mass of Ec₃H₅O₃  is 148.42 grams/mole. Molar mass, also known as molecular weight, is the mass of a substance (usually a chemical compound) divided by the amount of substance present, expressed in grams per mole (g/mol).

To find the molar mass of Ec₃H₅O₃, calculate the total molar mass of each element in the compound.

The molar mass of Ec (C₂H₃O₂) is 31.79 grams/mole, as given.

The molar mass of H (hydrogen) is 1.01 grams/mole.

The molar mass of O (oxygen) is 16.00 grams/mole.

Calculate the molar mass of Ec₃H₅O₃ :

Molar mass of Ec₃H₅O₃ = (3 × molar mass of Ec) + (5 × molar mass of H) + (3 × molar mass of O)

Molar mass of Ec₃H₅O₃  = (3 × 31.79) + (5 × 1.01) + (3 × 16.00)

Molar mass of Ec₃H₅O₃  = 95.37 + 5.05 + 48.00

Molar mass of Ec₃H₅O₃ = 148.42 grams/mole

Therefore, the molar mass of Ec₃H₅O₃  is 148.42 grams/mole.

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Latin was the language of learning at medieval and renaissance universities.

After about the 6th century, Latin ceased to be the mother tongue of peoples and nations. Nevertheless, knowledge and use of Latin persisted, partly because most of the Germanic peoples who settled in areas that were once part of the Western Roman Empire lacked a written culture. Therefore, Latin continued to be used for official documents. Of course, Latin was also the language of the Roman Church and its administration.

Latin maintained its role as the primary language for communicating the liberal arts and sciences from the Middle Ages through the Renaissance. Latin was the language of instruction and discussion in the schools and colleges established in the Middle Ages.

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The tonicity of a solution refers to its ability to cause a change in the shape or size of cells by altering the water content.

In this case, since the membrane is impermeable to glucose but permeable to water, the glucose molecules cannot pass through the membrane, while water molecules can. Since the solution is made of 0.3M glucose, it means that the concentration of glucose in the solution is 0.3 moles per liter.

When blood is added, the impermeable membrane prevents glucose molecules from passing through, but water molecules can move freely. The presence of a higher concentration of glucose inside the membrane than in the blood creates a hypertonic environment. This causes water to move from the blood (where the concentration of solutes is lower) into the solution, via osmosis.

As a result, the solution will become more diluted as water enters it, causing it to expand and potentially change the shape or size of the cells.

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Cascade showing splitting of Hc with other protons Multiplet, indicating the relative intensities and correct spacing of the peaks within the multiplet for Hc would look like:

The split multiplet for Hc with accurate relative intensities and spacing of peaks.

The answer to the question is as follows:Problem 3 (10 pts) Draw the splitting cascade for Hc​ given the coupling constants shown below.

Accurately draw the resulting multiplet for Hc​ indicating the relative intensities and correct spacing of the peaks within the multiplet. Jbc​

=16 Hz Jcd​

=8 Hz Jca

​=2 HzGiven coupling constants are Jbc​

=16 Hz, Jcd​

=8 Hz, and Jca

​=2 Hz.Let the proton Hc​ be coupled to Ha​, Hb​ and Hd​.
Since Hc is coupled to Hb and Hd, the triplet will appear twice, one for each coupling.Ha, Hb, and Hd are not coupled to each other, therefore each will show up as a singlet.T

he splitting tree would look like.Cascade showing splitting of Hc with other protons Multiplet, indicating the relative intensities and correct spacing of the peaks within the multiplet for Hc would look like:

The split multiplet for Hc with accurate relative intensities and spacing of peaks.

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Approximately 0.331 ml of the creosol solution needs to be mixed with water to prepare 50 ml of a 1:150 creosol solution.

To prepare a 50 ml solution of creosol with a concentration of 1:150, we need to calculate the amount of 4reosol solution and water required.

A 1:150 solution means that there is 1 part of creosol for every 150 parts of the total solution. This ratio can be represented as a fraction: 1/150.

Let's assume x ml of the 4reosol solution is required. Since the total volume is 50 ml, the volume of water needed would be 50 - x ml.

According to the ratio, the concentration of creosol can be calculated as follows:

(1 part creosol) / (1 part creosol + 150 parts total solution) = x ml / 50 ml

Simplifying the equation:

1 / (1 + 150) = x / 50

1 / 151 = x / 50

Cross-multiplying:

x = (1 / 151) * 50

x ≈ 0.331 ml

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We are adding all the numbers together, we must make sure that our answer has the same number of significant figures as the number with the least significant figures in the addition,

which is two.

To calculate the value of

2.210 cm + 12.5 cm + 176.0 cm + 318 cm,

we can add the numbers together as shown below:

2.210 cm+12.5 cm+176.0 cm+318 cm

= 508.71 cm (rounded to two significant figures)

Therefore, the sum of 2.210 cm, 12.5 cm, 176.0 cm and 318 cm is 508.71 cm, rounded to two significant figures.

Note that we rounded the answer to two significant figures because 2.210 cm has only three significant figures.

We are adding all the numbers together, we must make sure that our answer has the same number of significant figures as the number with the least significant figures in the addition, which is two.

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Thus, the mass spectrum of 3-Methyl-4-phenyl-2-butanone showed the following positive fragment ions at M/Z: 162, 147, 43, and 91.

The mass spectrum of 3-Methyl-4-phenyl-2-butanone showed the following positive fragment ions at M/Z: 162, 147, 43, and 91.

The positive fragment ions corresponding to each mass are as follows:

At m/z = 162, the ion corresponds to the loss of a CO (28) unit from the parent molecule.

The positive fragment ion structure for m/z = 162 is shown below:

At m/z = 147, the ion corresponds to the loss of a CH3CH2CH2 (44) unit from the parent molecule.

The positive fragment ion structure for m/z = 147 is shown below:

At m/z = 43, the ion corresponds to the loss of a C7H7COCH3 (119) unit from the parent molecule.

The positive fragment ion structure for m/z = 43 is shown below:

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