Draw the mechanism for the following reaction.
From acetanilide to 2-Chloro-4-Bromoaniline

The relationship between an hydrogen atom's energy levels, sublevels and atomic orbitals lies in the fact that hydrogen atom has a shell with energy level of 1 and the energy sublevels are similar as there's only one and have the same energy, and lastly, only one atomic orbital exists in a hydrogen atom

Ultimately, the hydrogen atom has only one electron In the energy level 1, sublevels with equal energy as there are no sublevels in the energy level 1 and only the 1s atomic orbital.

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Answer:

if your eyes are exposed to a hazardous chemical you should use the eye wash station. The first few seconds after exposure to a hazardous chemical are critical.

Answer: The temperature of the gas at a pressure of  0.987 atm and volume of 144mL is \(25.16^0C\)

Explanation:

The combined gas equation is,

\(\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}\)

where,

\(P_1\) = initial pressure of gas = 0.947 atm

\(P_2\) = final pressure of gas = 0.987 atm

\(V_1\) = initial volume of gas = 150 ml

\(V_2\) = final volume of gas = 144 ml    

\(T_1\) = initial temperature of gas = \(25^0C=(25+273.15)K=298.15K\)

\(T_2\) = final temperature of gas = ?

Now put all the given values in the above equation, we get:

\(\frac{0.947\times 150}{298.15}=\frac{0.987\times 144}{T_2}\)

\(T_2=298.31K=(298.31-273.15)^0C=25.16^0C\)

The temperature of the gas at a pressure of  0.987 atm and volume of 144mL is \(25.16^0C\)

Answer: V x 2 = 0.1 x 0.1

0.01/2= 0.005 L or 5 ml

Explanation:

26 moles of oxygen (O₂) are required to react completely with 4 moles C₄H₁₀.

In this balanced chemical equation, 2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O, the stoichiometric coefficients indicate the molar ratios of reactants and products in the reaction.

To find the number of moles of O₂ needed to react with 4 moles of C₄H₁₀, we can use the stoichiometric coefficients as conversion factors. We see that 2 moles of C₄H₁₀ react with 13 moles of O₂. To find the number of moles of O₂ reacting with 4 moles of C₄H₁₀, we can set up a proportion as follows:

(4 moles C₄H₁₀) × (13 moles O₂ / 2 moles C₄H₁₀)

The "moles C₄H₁₀" units cancel out, leaving us with moles of O₂:

(4 × 13) / 2 = 26 moles O₂

Therefore, 26 moles of oxygen (O₂) are required to react completely with 4 moles of butane (C₄H₁₀).

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Answer:

double

Explanation:

.

Answer:

19.9 moles

Explanation:

Each mole has 6.02 x 10^23 many atoms. This number is commonly known as "Avogadro's Number."

In this problem, we have 1.2 x 10^25 atoms of phosphorus.

Thus, (1.2 x 10^25)/(6.02 x 10^23) is the number of moles in 1.20 x 10^25 many atoms of phosphorus.

(1.2(10^25))/(6.02(10^23))

19.9 moles.

The moles are 19.9 moles

Each mole has \(6.02 \times 10^{23}\) many atoms.

This number is commonly known as "Avogadro's Number."

In this given question, we have \(1.2 \times 10^{25}\) atoms of phosphorus.

So \((1.2 \times 10^{25})\div (6.02 \times 10^{23})\)is the number of moles in\(1.20 \times 10^{25}\) many atoms of phosphorus.

Now  

\((1.2(10^{25}))\div (6.02(10^{23}))\)

19.9 moles.

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Answer:

Mg3(PO4)2 + 6 K → 2 K3PO4 + 3 Mg

Reaction type:

single replacement

Yes because It is possible to isolate the beta-hydroxyketone intermediate in several chalcone-forming processes before dehydration.

The rate-determining step is a common feature of many response mechanisms. This step is significantly slower than the others. The rate law for the whole reaction may be determined directly from the molar ratio of the step's balancing equation if the rate-determining stage is really the first phase in a mechanism.

This is because a phase that moves slowly needs more time to complete since it may entail numerous other processes. As an illustration, a reactant would need to disseminate or migrating to a certain reaction site before the other reaction can occur, which then immediately creates a product.

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Answer:

a.calcium

b.chlorine

It requires 19975.7 J of heat capacity to raise 5.3 moles of water from 75.0 °C to 125 °C at atmospheric pressure.

How should I define "thermal capacity"?

Heat capacity is the quantity of heat energy required to raise a particular quantity of matter's temperature by one degree Celsius. The size or quantity of a particular substance has an impact on a general property known as heat capacity. The units used to assess heat capacity are joules per degree Celsius or joules per Kelvin.

What kind of heat capacity is that?

Thus, a substance's ability to conduct heat is an innate property. For instance, water has an incredibly high heat capacity of 4184 J per kilogram. This indicates that 4184

Briefing:

H = ncθ

m = Number of moles of water

c = Molar heat capacity of water

θ = Temperature rise

Substituting values;

H = 5.3 mole × 75.38 J/mol °C × ( 125oC - 75.0oC)

H = 19975.7 J

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The two blocks have the same amount of thermal energy.

Due to platinum metal, the thermal energy is equally distributed in the whole metal so that's equal distribution the thermal energy of both blocks will be the same so we can conclude that the two blocks have the same amount of thermal energy.

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Answer:

In general, electrons can be shared between atoms (a molecular bond) or electrons can be completely removed from one atom and given to another (an ionic bond). ... Water is a molecule because it contains molecular bonds. Water is also a compound because it is made from more than one kind of element (oxygen and hydrogen).

Explanation:

Answer:

use wire nettings

Explanation:

and cages

The chemical reaction 2 H₂(g)+O₂(g)—->2 H₂O(l)+571.8 kJ is an exothermic reaction as heat is released during the reaction.

An exothermic reaction is defined as a chemical reaction which involves release of energy in the form of light,heat .In these reactions, energy is transferred from system to surroundings rather than taking energy from surroundings into system as in endothermic reactions.

In an exothermic reaction,change in enthalpy is negative.Therefore, it can be inferred that net amount of energy which is required to start the exothermic reaction is less than the net amount which is released by the reaction.

Examples of exothermic reactions are combustion reactions, detonation of nitroglycerin , neutralization reactions and nuclear fission.

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The total time required for the decay is approximately 1416.0 hours, which is closest to the given option C. 1006.9 hours.

Option (C) is correct.

To calculate the number of half-lives required for the decay. The half-life of 140 Ba is given as 283.2 hours.

First, we calculate the fraction of the original amount remaining after each half-life. Since the half-life represents the time it takes for half of the substance to decay, the fraction remaining after each half-life is 1/2.

To find the number of half-lives required to decay from 35 mg to 1.0 mg, we can set up the following equation:

(35 mg) * (1/2)ⁿ = 1.0 mg

Where 'n' is the number of half-lives.

Now, let's solve for 'n':

(1/2)ⁿ = 1.0 mg / 35 mg

(1/2)ⁿ = 0.02857

To find 'n', we can take the logarithm (base 1/2) of both sides:

n = log base 1/2 (0.02857)

Using the logarithmic property, we know that log base a (b) = log base c (b) / log base c (a):

n = log (0.02857) / log (1/2)

Using a calculator, we can find:

n ≈ 4.243

Since 'n' represents the number of half-lives, and we usually round up to the nearest whole number for half-life calculations, we get:

n ≈ 5

Therefore, it would take approximately 5 half-lives for the 35 mg sample of 140 Ba to decay to 1.0 mg.

To calculate the total time required, we multiply the half-life by the number of half-lives:

Total time = 283.2 hours * 5

Total time ≈ 1416 hours

Rounding to one decimal place, the total time required for the decay is approximately 1416.0 hours, which is closest to the given option C. 1006.9 hours.

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Answer:

This is called a chemical reaction. gas may form.heat may be produced and the color may change

Answer:

Temporary hardness is a type of water hardness caused by the presence of dissolved bicarbonate minerals (calcium bicarbonate and magnesium bicarbonate). ... However, unlike the permanent hardness caused by sulfate and chloride compounds, this "temporary" hardness can be reduced by boiling the water.

Answer:An exact number has absolutely no uncertainty in it. Exact numbers cannot be simplified and have an infinite number of significant figures. Measured numbers have a limited number of significant figures.

Explanation:

36.2 grammes of Cl₂ can be produced at maximum yield from the specified reactants.

To determine the maximum yield of Cl₂, we need to first write a balanced chemical equation for the reaction between KMnO₄ and HCl. The balanced equation is:

2 KMnO₄ + 16 HCl → 2 MnCl₂ + 5 Cl₂ + 8 H₂O + 2 KCl

From the balanced equation, we can see that 2 moles of KMnO₄ react with 16 moles of HCl to produce 5 moles of Cl₂. We can use this information to calculate the theoretical yield of Cl₂.

Step 1: Convert the given masses of KMnO₄ and HCl into moles using their respective molar masses.

70.0 g KMnO₄ × (1 mol KMnO₄/158.03 g KMnO₄) = 0.443 mol KMnO₄

75.0 g HCl × (1 mol HCl/36.46 g HCl) = 2.06 mol HCl

Step 2: Determine the limiting reactant. The reactant that produces the least amount of product is the limiting reactant. To do this, we need to find the mole ratio between KMnO₄ and HCl.

From the balanced equation, 2 moles of KMnO₄ react with 16 moles of HCl.

So, the mole ratio of KMnO₄ to HCl is:

0.443 mol KMnO₄ × (16 mol HCl/2 mol KMnO₄) = 7.14 mol HCl

Since we have 2.06 mol of HCl and 7.14 mol of HCl are required to react with 0.443 mol of KMnO₄, we can see that HCl is the limiting reactant.

Step 3: Calculate the theoretical yield of Cl₂ using the mole ratio from the balanced equation.

From the balanced equation, 2 moles of KMnO₄ react to produce 5 moles of Cl₂.

So, the theoretical yield of Cl₂ is:

2.06 mol HCl × (5 mol Cl₂/16 mol HCl) × (70.9 g Cl₂/1 mol Cl2) = 36.2 g Cl₂

Therefore, the maximum yield of Cl₂ that can be produced from the given reactants is 36.2 grams.

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Answer:

H2O

Explanation:

Answer:

The heat released when the temperature of 60 g of water decreases from 75 degrees Celsius to 27 degrees Celsius is -12,049.92 J.

Explanation:

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

Sensible heat is the amount of heat that a body absorbs or releases without any changes in its physical state or phase change. Sensible heat is measured by the expression:

Q = c * m * ΔT

Where Q is the heat exchanged by a body of mass m, constituted by a substance of specific heat c and where ΔT is the variation in temperature.

In this case:

Replacing:

Q= 4.184 \(\frac{J}{g*C}\) *60 g* (-48 C)

Q= -12,049.92 J

The heat released when the temperature of 60 g of water decreases from 75 degrees Celsius to 27 degrees Celsius is -12,049.92 J.

Answer: A

Explanation: I just answered mine

The rate constant of the reaction can be obtained as  0.11 s-1. Option C

We know that the rate constant that we have for the reaction would have to do with the speed with which there is the conversion of the reactants into the products as well as the disappearance of the reactants.

We can see that the table that shows how the reaction is progressing can be shown in the reaction that we have here and we need to show that the information that we have can be used to obtain the rate constant of the reaction as have been shown in the kinetics.

Using the formula;

ln[A] = ln[A]o - kt

[A] = concentration at time t

[A]o = initial concentration

k = rate constant

t = time taken

We have;

–1.735 = – 1.625 - k(1)

k = – 1.625 + 1.735

k = 0.11 s-1

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Answer:

"500 Joule/sec" is the right answer.

Explanation:

The given values are:

Force,

F = 1000 N

Velocity,

s = 10 m

Time,

t = 20 s

Now,

The power will be:

=  \(\frac{Force\times Velocity}{Time}\)

On putting the values, we get

=  \(\frac{1000\times 10}{20}\)

=  \(\frac{10000}{20}\)

=  \(500 \ Joule/sec\)

K₂Cr₂O₇ is a chemical compound known as potassium dichromate. In this compound, the oxidation state of potassium (K) is +1, and the oxidation state of oxygen (O) is -2. The compound is neutral, so the sum of the oxidation states of all atoms in the compound is zero.

To determine the oxidation state of chromium (Cr) in K₂Cr₂O₇, we can use the fact that the sum of the oxidation states in a compound must be zero. We know the oxidation state of potassium (+1) and oxygen (-2), and we can assume that the oxidation state of each oxygen atom is -2.

The oxidation state of chromium in K₂Cr₂O₇ can be determined by using the following equation:

2K + Cr₂O₇²⁻ + xH⁺ → 2K+ + 2Cr₃⁺ + xH₂O

In this equation, K₂Cr₂O₇ is dissociated into its constituent ions, and the chromium atoms are oxidized from a +6 oxidation state in Cr₂O₇²⁻  to a +3 oxidation state in Cr₃⁺. This is balanced by the reduction of hydrogen ions to hydrogen gas.

Therefore, the oxidation state of chromium in K₂Cr₂O₇  is +6.

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Answer:

Kc = [CaO] [O2] / [CaCO3]

Explanation:

Equilibrium constant, Kc is simply defined as the ratio of the concentration of products raised to their coefficient to the concentration of the reactants raised to their coefficient.

Thus, we can write the equation for the equilibrium constant, Kc for the reaction given in the question above as follow:

CaCO3(s) <==> CaO(s) + O2(g)

Kc = [CaO] [O2] / [CaCO3]