draw the 4 products that are produced in the following reaction. remember that the structure given is just one of 2 resonance structures. the other resonance structure has the pi bonds in the alternate positions. in reality the aromatic pi electrons are delocalized over all 6 carbons. in the same marvin editor dra

Answer:

The answer is option A.

its reactivity

I hope this helps you.

Answer:

A) Reactivity

Explanation:

Reactivity is one of the characteristics of a chemical property. The copper that turned color due to air, has a different chemical composition.

It wouldn't be flammability - even though it is a chemical property, but nothing is burning.

All the other answer choises: mass and volume are physical properties. Basically the PHYSICAL characteristics which doesn't change the composition.

Hope this helps!

In the context of atomic structure, an orbital and a sublevel both refer to the distribution of electrons around an atom's nucleus.

The key difference between an orbital and a sublevel is that the sublevel determines the shape and energy of the orbitals, while the orbital refers to the space in which the electron is found. The following is a more detailed explanation:

OrbitalThe region of space where an electron can be found at any given time is referred to as an orbital. Each orbital can hold a maximum of two electrons and can be characterized by four quantum numbers: n, l, m, and s. There are four types of orbitals based on the value of the orbital quantum number l: s, p, d, and f. The s orbital is spherical and has a value of l = 0,

while the p, d, and f orbitals are more complex and have values of l = 1, 2, and 3, respectively. SublevelA sublevel refers to a set of orbitals with the same value of l. Sublevels are denoted by the letters s, p, d, and f, which correspond to values of l = 0, 1, 2, and 3, respectively.

The number of sublevels in an energy level is equal to the value of the principal quantum number n. For example, the first energy level (n = 1) has only one sublevel (s), while the second energy level (n = 2) has two sublevels (s and p). The sublevel determines the shape and energy of the orbitals within it.

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Answer:

C

Explanation:

electronic waves transmits energy but mechanical waves require a medium in order to transport their energy from bgg one place to another.

Answer:

it is B.) Electromagnetic waves vibrate in two directions that are

Explanation:

stay safe 2021

Answer:

False

Explanation:

Answer:

False

Explanation:

The number of electrons determines the chemical properties.  

In this question, we need to find the value of pressure of a 15 grams sample of CO2 gas, and in order to find this value, we will be using the Ideal gas law formula, which is the following:

PV = nRT

Where:

P = pressure in atm

V = volume in liters, 20 Liters

n = number of moles

R = gas constant, 0.082

T = temperature in kelvin, 0°C = 273 K

The number of moles we need to find based on the mass in the question and based on the molar mass of CO2, 44g/mol:

44g = 1 mol

15g = x moles

44x = 15

x = 15/44

x = 0.34 moles of CO2 in 15 grams

Now we have the values to add to the formula:

P * 20 = 0.34 * 0.082 * 273

20P = 7.61

P = 7.61/20

P = 0.38 atm of pressure

The pressure will be 0.38 atm

They are extremely small infront of earth size.

Answer:

B. Wall applies equal reaction force on hand

Explanation:

This is newton's third law. You push something, that something pushes you back with same force. The direction is opposite, so if I push a wall, the wall pushes me back with same force just in opposite direction (so wall towards me). This is why option A is incorrect b/c it says force in same direction as wall. C and D talk about unequal force which is incorrect.

Answer:Wall applies equal reaction force on hand

Explanation:

Understanding the relationship between reactants and products in a reaction is crucial for understanding chemistry. That is what stoichiometry is.

It is a quantitative relationship between the mass (and thus the number of moles) of different products and reactants in a chemical reaction.

Chemical reactions must be balanced, or in other words, the products and reactants must both contain the same number of different atoms.

A chemical reaction cannot yield any knowledge about the relationship between its products and reactants if it is not balanced. In order to balance a chemical reaction, you should do so initially.

By placing coefficients in front of the reactants and products, we may balance processes. The stoichiometric coefficients are these values.

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Oxygen gas is an element.

White milky is an unclear description and cannot be classified without further information.

Oil & vinegar salad dressing is a heterogeneous mixture.

Calcium chloride road salt is a compound.

Oxygen gas (O2) is composed of only one type of atom, which makes it an element. Elements are pure substances that cannot be broken down into simpler substances by chemical means.

The description "white milky" is not clear enough to classify it as a specific substance. Without further information, it is not possible to determine its classification.

Oil & vinegar salad dressing is a mixture of oil and vinegar, which are two different substances. It is a heterogeneous mixture because the components are not uniformly distributed throughout the mixture. In salad dressing, you can see separate layers or droplets of oil and vinegar.

Calcium chloride road salt is a compound. It is composed of calcium (Ca) and chloride (Cl) ions combined together chemically. Compounds are substances that consist of two or more elements chemically bonded in fixed proportions. In this case, calcium chloride forms a compound used as a type of road salt.

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Answer:

11.2823 grams of NH3 are produced
Explanation:

No. of moles for H2 = 22.3/22.4 = 0.9955 moles

By calculating number of moles produced of NH3, by using ratios:

N2 + 3H2 → 2NH3
1    :   3    :    2
? : 0.9955:  ?

part value = 0.9955/3 = 0.33183
No. of moles for NH3 = 2 * 0.33183 = 0.6637 moles

mass of produced NH3 (Molar mass = 17 g/mol) = 0.6637*17 = 11.2823 grams

Considering the definition of isotopes and atomic mass of an element, the atomic mass of iron is 55.9012 amu.

An isotope is a form of a chemical element in which the atoms have the same number of protons, but a different number of neutrons.

The atomic mass of an element is the weighted average mass of its natural isotopes, considering the relative abundance of each of them.

In this case, you know iron has four isotopes:

Then, the atomic mass of iron can be calculated as:

atomic mass of iron= 53.9396 amu×0.0582 + 55.9349 amu×0.9166 + 56.9354 amu×0.0219 + 57.9333 amu×0.0033

atomic mass of iron= 55.9012 amu

Finally, the atomic mass in this case is 55.9012 amu.

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The volume of these objects can be found by water displacement. A volume of water sufficient to cover the object is placed in a graduated cylinder and the volume read. The object is added to the cylinder and the volume read again.

Answer:

Displacement is a method used for measuring the volume of an irregular solid and it is in cubic units.

The gas that does not bind to the porphyrin ring Fe (II) ion in myoglobin is option E) H2S. Myoglobin is a protein that is found in muscles and plays a crucial role in storing and transporting oxygen.

The heme group present in myoglobin contains an iron ion that is surrounded by a porphyrin ring. This iron ion is responsible for binding to oxygen and facilitating its transport. However, some gases like CO, NO, and O2 can also bind to this iron ion, which can have adverse effects on the body. Carbon monoxide CO and nitric oxide NO have a higher affinity for binding to the iron ion than oxygen, which can lead to oxygen deprivation in the body. In contrast, carbon dioxide CO2 can bind to a different site on the protein and assist in the release of oxygen. However, hydrogen sulfide H2S does not bind to the porphyrin ring Fe (II) ion in myoglobin and therefore does not interfere with oxygen transport.

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Answer:true

Explanation:

This statement is correct

Answer:

Mass of water == 1.71 g

Explanation:

Given data:

Initial temperature of water = 10°C

Final temperature of water = 50°C

Energy absorbed = 286 J

Mass of water = ?

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Specific heat capacity of water is 4.18 J/g.°C

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT =  50°C -  10°C

ΔT = 40°C

by putting  values,

286 J = m × 4.18 J/g.°C × 40°C

286 J = m × 167.2 J/g

m = 286 J / 167.2 J/g

m = 1.71 g

The dominant transport mechanism in the lake is diffusion. The water treatment plant has a limited time before it needs to start treating for manganese, and the minimum height above the lake bottom for the water intake to provide one year for designing and installing a manganese treatment system needs to be determined.

Dominant transport mechanism: Diffusion is the main transport mechanism in the lake. This means that manganese is gradually diffusing from the solid deposits at the lake bottom into the water column.

 t = (L^2) / (4D)

where t is the time in seconds, L is the distance from the bottom (1 ft or 30.48 cm), and D is the diffusion coefficient of manganese (6.88×10^(-6) cm^2/s).

Calculation Plugging in the values into the equation, we can calculate the time it takes for manganese to reach the water intake level.

  t = (30.48^2) / (4 × 6.88×10^(-6)) = 126,707 seconds

  Converting seconds to days: 126,707 seconds ÷ (24 hours/day × 3600 seconds/hour) ≈ 1.47 days

  Therefore, the water treatment plant has approximately 1.47 days before it needs to start treating for manganese.

Minimum intake height: To provide one year for designing and installing a manganese treatment system, the intake should be raised to a height where the time it takes for manganese to reach that level is one year.

  t = (L^2) / (4D)

  Rearranging the equation to solve for L:

  L = √(4Dt)

  Plugging in the values: L = √(4 × 6.88×10^(-6) cm^2/s × (1 year × 365 days/year × 24 hours/day × 3600 seconds/hour))

  L ≈ 49.65 cm or 0.163 ft

The minimum height above the lake bottom that the intake should be raised to is approximately 0.163 ft.

The dominant transport mechanism in the lake is diffusion, where manganese is slowly diffusing from the solid deposits into the water column. The water treatment plant has approximately 1.47 days before it needs to start treating for manganese to maintain concentrations below the detection limit. To provide one year for designing and installing a treatment system, the intake should be raised to a minimum height of approximately 0.163 ft above the lake bottom.

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The main answer to the question is option B (ii). This is because the boiling point of a compound depends on the strength of intermolecular forces between its molecules.

Option B (ii) has the highest boiling point because it is a polar molecule with hydrogen bonding between its molecules, which is the strongest intermolecular force. Option A (v) and option D (iv) are nonpolar molecules and have weaker intermolecular forces, resulting in lower boiling points. Option C (iii) has dipole-dipole forces but not hydrogen bonding, so its boiling point is higher than options A and D but lower than option B. Option E (i) is a nonpolar molecule with the lowest boiling point among all the options.
on which compound has the highest boiling point, I need the specific compound names or their chemical formulas corresponding to the given choices (a.v, b.ii, c.iii, d.iv, e.i). Please provide the compound information, and the main answer and an explanation.

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Alpha-D-glucopyranose in the chair conformation is a stable, six-membered ring structure with its hydroxyl groups and hydrogen atoms arranged in specific axial and equatorial positions to minimize steric hindrance and maximize stability.

The characteristics of alpha-D-glucopyranose in the chair conformation include the following:

1. Alpha-D-glucopyranose is a cyclic form of glucose, where the glucose molecule forms a six-membered ring structure with an oxygen atom as one of the members.
2. In the chair conformation, the six-membered ring adopts a stable and energetically favorable shape that resembles a chair.
3. The hydroxyl group on the anomeric carbon (C1) is in the axial position and points downward in the alpha-D-glucopyranose chair conformation.
4. The other hydroxyl groups and hydrogen atoms attached to the ring carbons are in alternating axial and equatorial positions, minimizing steric hindrance and maximizing stability.

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Based on the standard heat of formation of aluminium oxide, the heat of the reaction of the decomposition of aluminium oxide is +3339.6 kJ

The heat or enthalpy of a reaction is the amount of heat evolved or absorbed when reactant molecules when reactants form products.

Considering the given reaction:

The heat of formation of aluminum oxide is -1669.8 kJ/mol.

The heat of the reaction of the decomposition of aluminium oxide is calculated as follows:

Heat of reaction = Heat of formation of products - Heat of formation of reactants

Heat of reaction = {3 × ΔHf°O2 (g) + 2 × ΔHf° Al(s)} - 2 × ΔHf° Al2O3 (s)

Since the standard enthalpy of formation,ΔHf°, of an element in its most stable form is equal to zero.

ΔH°rxn = (3 × 0 + 2 × 0) - 2 × -1669.8 kJ/

ΔH°rxn = +3339.6 kJ

Therefore, the heat of the reaction of the decomposition of aluminium oxide is +3339.6 kJ

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The equilibrium concentrations of Pb²⁺ and Cl⁻ are 0.27 M and 2.43 x 10⁻² M

Reaction is a change in the physical or chemical state of a substance due to the interaction of the substance with another substance. It is an important process in chemistry, biology and physics. Common reactions involve the breaking and forming of chemical bonds and the release or absorption of energy. Reactions are usually accompanied by visible changes, such as color or formation of a gas. Reactions also play a role in everyday life, such as in digestion or photosynthesis.

We can calculate the equilibrium concentrations for Pb²⁺ and Cl⁻ by using the Ksp expression for PbCl₂:

Ksp = [Pb²⁺][Cl⁻]²First, we need to calculate the initial concentrations of Pb²⁺ and Cl-:

[Pb²⁺]initial = 0.27 M

[Cl-]initial = 1.3 M

Using the initial concentrations, we can calculate the equilibrium concentrations:

Ksp = [Pb²⁺+]eq[Cl⁻]²eq

[Pb²⁺]eq = Ksp / [Cl⁻]²eq

[Pb²⁺]eq = (1.6 × 10-5) / [Cl⁻]²eq

[Cl-]⁺²eq = (1.6 × 10-5) / [Pb²⁺]eq

[Cl⁻]²eq = (1.6 × 10-5) / (0.27)

[Cl⁻]²²eq = 5.93 × 10⁻⁴

[Cl⁻]eq = √5.93 × 10⁻⁴

[Cl⁻]eq = 2.43 × 10⁻² M

Therefore, the equilibrium concentrations of Pb²⁺and Cl⁻ are 0.27 M and 2.43 x 10⁻² M, respectively.

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The concentration of Cl- and Pb₂+ at equilibrium is 0.56 M and 0.056 M respectively.

To calculate the equilibrium concentrations of Pb₂+ and Cl-, we need to first determine the limiting reagent, which is the reactant that will be completely consumed in the reaction. In this case, Pb(NO₃)₂ is the limiting reagent as it has the smaller concentration.

The balanced equation for the reaction is Pb(NO₃)₂(aq) + 2KCl(aq) → PbCl₂(s) + 2KNO₃(aq).

Using stoichiometry, we can determine that all of the Pb(NO₃)₂ will react to form PbCl₂ and the remaining KCl will be in excess.

Thus, the concentration of Pb2+ will be equal to the initial concentration of Pb(NO₃)₂, which is 0.27 M.

To calculate the concentration of Cl-, we need to use the solubility product constant (Ksp) for PbCl₂, which is 1.6 x 10^-5. The equation for Ksp is Ksp = [Pb₂+][Cl-]². We know the concentration of Pb₂+ is 0.27 M, so we can rearrange the equation to solve for [Cl-].

Ksp = [Pb₂+][Cl-]²

1.6 x 10⁻⁵ = (0.27 M)(x)²

x = 0.56 M

Therefore, the concentration of Cl- at equilibrium is 0.56 M.

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The electron configuration of a potassium atom at ground state is 1s²2s²2p⁶3s²3p⁶4s¹. Therefore, option D is correct.

The electron configuration of an element can be explained as electrons being occupied in different energy levels of an atom of a specific element. In the electron configuration, the electrons are usually written as a superscript of atomic subshells. For example, the electron configuration of Helium can be represented as 1s²2s².

The sequence of completely filled subshells similar to neighboring the electronic configuration of a noble gas is represented by square brackets. The principal quantum number (n) will be used to denote the maximum number of electrons in an electron shell.

The total number of electrons occupied in the given electronic configuration  1s²2s²2p⁶3s²3p⁶4s¹  is 19. The atomic number of potassium is 19 therefore it is the configuration of potassium.

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Option c is correct which says both beryllium and chlorine form covalent bonds.

What are covalent bonds?

When the bonds between the atoms are formed via the mutual sharing of electrons are called covalent bonds.

The bonding between the beryllium chloride is covalent due to the following reasons:

• The beryllium atom has an ionization energy of 900kj/mol which is quite high. Therefore, it can not form cations which are necessary for ionic bonding.

• The beryllium atom has two electrons in its orbitals to share with chlorine atoms electrons.

Hence, this way the bonding between them is covalent and the correct answer is option c.

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The pH of the resulting solution is approximately 1.08. The pH of a solution can be calculated by determining the concentration of hydrogen ions (H+) in the solution.

To calculate the pH of the resulting solution, we need to determine the number of moles of NaOH and HCl used. We can then use the stoichiometry of the reaction to find the concentration of H+ in the final solution.

First, let's calculate the number of moles of NaOH used:
Volume of NaOH = 5.0 ml
Molarity of NaOH = 0.50 M

Using the formula: moles = volume (in liters) × molarity
moles of NaOH = (5.0 ml / 1000 ml/L) × 0.50 M = 0.0025 moles

Next, let's calculate the number of moles of HCl used:
Volume of HCl = 25.0 ml
Molarity of HCl = 0.10 M

moles of HCl = (25.0 ml / 1000 ml/L) × 0.10 M

= 0.0025 moles

Since NaOH and HCl react in a 1:1 ratio, the moles of H+ produced will be equal to the moles of HCl used. Therefore, the concentration of H+ in the final solution will be:

moles of H+ = moles of HCl

= 0.0025 moles

To calculate the concentration of H+ in the final solution, we need to determine the volume of the final solution. Since the volumes of NaOH and HCl are added together, the volume of the final solution is:

Volume of final solution = Volume of NaOH + Volume of HCl = 5.0 ml + 25.0 ml

= 30.0 ml

Converting the volume to liters:
Volume of final solution = 30.0 ml / 1000 ml/L

= 0.030 L

Now, we can calculate the concentration of H+ in the final solution:

Concentration of H+ = moles of H+ / Volume of final solution
Concentration of H+ = 0.0025 moles / 0.030 L ≈ 0.0833 M

Finally, we can calculate the pH of the resulting solution using the equation:

pH = -log[H+]
pH = -log(0.0833) ≈ 1.08

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Answer:

Approx. 20 moles of iron.

Explanation:

There are approx. 6.022 x 10.23 iron atoms per mole of iron. In this quantity, The number of iron atoms has a mass of

55.85 ⋅ g.

Answer: The mass percent of copper in copper chloride is 47.23 %.

Answer:

No

Explanation:

No, as sometimes objects with large masses are very light since they aren't dense.