For quantum numbers, if n=5, what is the subshell of l=4? can l be bigger than 3?

Nuclide on the band of nuclear stability have atomic number 86 and 128 neutrons.

What is nuclear?
Utilizing nuclear reactions to generate electricity is known as nuclear power. Nuclear fission, nuclear decay, and nuclear fusion reactions can all provide nuclear energy. Currently, nuclear power plants use the fission of uranium and plutonium to generate the great majority of the world's electricity from nuclear sources. In specialised applications like radioisotope thermoelectric generators found in some space probes like Voyager 2, nuclear decay processes are employed. International research continues to centre on producing electricity via fusion technology. The majority of nuclear power facilities use thermal reactors with once-through fuel cycles and enriched uranium. When the proportion of neutron-absorbing atoms rises to a point where a chain reaction can no longer be sustained, which normally takes three years, fuel is removed.

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With no change in temperature or amount of gas, the pressure of ideal gas approximation is 4.83 atm.

We need to know about the ideal gas theory to solve this problem. The ideal gas is assumed that there is no interaction between particles in a gas. It can be determined by the equation

P . V = n . R . T

where P is pressure, V is volume, n is the number of moles gas, R is the ideal gas constant (8.31 J/mol.K) and T is temperature.

From the question above, we know that

V1 = 5.1 L

V2 = 9.29 L

P2 = 2.65

When the initial and final temperature is the same, we can use the ratio of pressure and volume as

P1 . V1 = P2 . V2

P1 . 5.1 = 2.65 . 9.29

P1 = 4.83 atm

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1. An artwork that shows the colors forms and textures of a real object is balance.

2. The quality of an artwork in which the elements are visually equal is balanced.

3. The rules artists use for arranging the elements of art in artworks include proportion, pattern, movement, contrast, emphasis, balance, variety, and unity are principles of design.

4. Having an identifiable object, but without details and with visual elements rearranged or simplified is Abstract.

5. The basic parts or things that make up works of art, including line, shape, color, value, form, texture, and space are elements of art.

The basic design is defined as creating a suitable configuration. Create shapes and placed works using artistic principles and elements such as lines points volumes planes and colors.

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Answer:

by the fertilizers that we use the soil or land to increase the fertility.

Explanation:

The solvent extraction could be done by the use of small amounts of solvent.

The term solvent extraction has to do with the procedure by which the solute that have been dissolved in a solvent can be recovered. It is usual that we could try to use a solvent in which a solute is soluble at high temperature but insoluble at low temperature. This is the process of solvent extraction.

We know that the efficiency of the solvent extraction could be achieved by the use of multiple or repeated extractions. This is best done using  small amounts of solvent.

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Assuming the collision factors are comparable, the reaction of which reaction energy profile will have the smallest rate constant is the reverse of reaction 2.

The rate constant depends on the transition state activation energy and temperature as shown in the formula in the lecture. Increasing the reaction temperature actually increases the kinetic energy and velocity of the molecules. Reaction rates and rate constants increase with increasing temperature.

Generalizing, the reaction rate doubles for every 10-degree increase in temperature. This is also called the temperature coefficient. The change in rate constant depends on the nature of the reaction and the concentration of the changing reactants. Rate constants are directly proportional to the concentration of a particular reactant. The rate constant does not change as the concentration of the reactants changes.

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In micrometers, the piece of aluminium foil is 0.8μm thick.

Aluminium foil paper or aluminium foil is basically flattened aluminium mainly used in packaging of food, cosmetics, drugs and other chemicals, and for cooking. Aluminium metal is preferred in making foil because of its inert nature and its resistance to tear and puncture, when compared to other metals.

The thickness of a piece of aluminium foil is way too thin to be measured using common measuring tools like a measuring tape or a ruler. It is mostly measured in micrometers. To convert from centimeters to micrometers, we multiply the value by 10,000. This is because there are 10,000 micrometers in one centimeter, hence:

                      1 centimeter = 10000 micrometers

                      8.0 x 10⁻⁵cm = xμm

 x = 8 x 10⁻⁵ x 10000

 x = 8 x 10⁻⁵ x 10⁴

Applying the laws of indices;

x = 8 x 10⁻⁵⁺⁴ = 8 x 10⁻¹ or 0.8

Therefore, the piece of aluminium 8 x 10⁻⁵cm thick is 0.8μm thick in micrometers.

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The maximum mass of ammonia that can be produced from this reaction is 17g

Mass is a measure of the amount of matter in a substance or an object

Here first the reaction is

3H₂ + N₂ → 2NH₃ so the correct reaction is

N₂ + 3H₂ → 2NH₃

So we have to find maximum mass of ammonia = ?

Molar mass of N₂ = 28.02 g/mol

Mass of N₂ =  7.0g

Mole N₂ = (7.0g/28.02 g/mol) =0.24 mol and

Molar mass of H₂ = 2.016 g/mol

Mass of H₂ =  21.0g

Mole H₂ = 21.0g/2.026 g/mol = 10.36 mol

So here 1 mole of N₂ reacts with 3 moles of H₂ to produce 2 moles of NH₃

So 0.24 mol×3 = 0.72 mol mol of H₂ to produce in the reaction

Therefore, 10.36 mol of H₂ react means 10.36 mol /3 = 3.45mol of N₂ to produce(2/3)×10.36 mol = 6.90mol of NH₃

But the amount of N₂ available for reaction with H₂ = 0.24mol

So, the N₂ is in excess of (0.24mol - 3.45) = 3.21mol and this will remain after the reaction

And  the amount of NH₃ produced = 6.90mol

Molar mass of NH3 = 17.03 g/mol

Therefore, mass of NH₃ produced = mole of NH₃ produced x molar mass of NH₃ = 6.90mol × 17.03 g/mol = 17g

The maximum mass of ammonia that can be produced from this reaction is 17g

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If oxygen and carbon dioxide act as ideal gases, then the volume of carbon dioxide produced is 0.5 L.

To calculate the volume of carbon dioxide produced, we need to write the balanced reaction equation for carbon monoxide combustion:

[tex]2CO + O_{2}[/tex] → [tex]2CO_{2}[/tex]

Assuming standard temperature and pressure and that all the gases involved act as ideal gases, 1 mole of gas will have a volume of 22.4 L

22.4 L : 1 mol = 250 mL : X

X = 1 mol * 0.25 L / 22.4 L = 0.0112 mol

Because 1 mol of oxygen produces 2 moles of carbon dioxide, then 0.0112 mol of oxygen produces 2 * 0.0112 mol = 0.0224 mol of carbon dioxide. The volume of carbon dioxide produced is:

0.0224 * 22.4 L = 0.5 L  

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The most basic atom in caffeine is marked Nitrogen.

Provided down is the structure of Caffeine is not acidic in fact it is basic, it will raise the pH of water to some degree . It is a weak base, so the free base will exist in equilibrium with its protonated counter part.

Due to its basicity, it will be more soluble in low pH aqueous solutions then in high pH solutions. This is because in low pH solutions, caffeine would exist completely as a protonated salt, making it more hydrophilic. Despite this, caffeine is very polar and is still quite soluble in water at higher pH levels.

Out of all the four nitrogen atoms, the most basic nitrogen atom is number 1 as it's lone pair is free for donation. The other nitrogen atoms have lone pair which  are involved in resonance in someway or the other.

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Column chromatography liquid-solid. Different types of chromatography techniques can be classified according to the physical states of the mobile and stationary phases.

Chemical analysis and chromatography are laboratory approaches for the separation of an aggregate into its additives. The aggregate is dissolved in a fluid solvent known as the cellular section, which includes it via a gadget on which a fabric called the stationary segment is constant.

Paper chromatography is a technique that's used to split low-molecular-mass compounds primarily based on their distribution between stationary segments and cellular sections. because of its low value and availability of diverse protocols for the separation of compounds, paper chromatography is considered an effective analytical tool.

Paper chromatography is an analytical method used to split colored chemical compounds or substances. it's far now ordinarily used as a teaching device, having been changed inside the laboratory by using other chromatography techniques along with skinny-layer chromatography.

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Depolymerization; Macromolecule-initiated cleavage; Thermal; Photochemical; Mechanochemical; Oxidative; Polymer-burning; Kinetics of cleaving Macromolecules when Chain Depolymerization is Negligible; Degradation in Polymer Recycling; Protection of Polymers Against Degradation.

Catalytic oxidation, hydrogenation, and pyrolysis are some of the methods that can be used to depolymerize lignins all the way down to phenilics.68 Little has been done to exploit these processes in the direction of monomers; instead, the products have been thought of in the context of fuels and commodity or fine chemicals.

Nevertheless, it does not seem improbable that certain degradation pathways followed by functionalization will become feasible in order to synthesize aromatic monomers with original structures that are not easily available from petrochemistry, such as vinyl phenols, p-methoxystyrene for polyaddition reactions, and difunctional aromatic compounds for polycondensations that lead to polyesters, degradation, etc.

Several of these potential uses for lignin-derived monomers have been thoroughly covered in two recent publications.

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The molecular formula of the given compound is [tex]MgSO_4.7H_2O[/tex]

The number of atoms in each element inside a single chemical molecule is expressed by the molecular formula. The definition of a molecular formula is the formula that shows the exact number of atoms in a molecule. The empirical formula is used to derive the Molecular Formula when the molar mass value is known. The molecular formula specifies the number of distinct types of atoms contained in a chemical molecule.

The ideal gas equation is:-

PV = nRT

Here,

Pressure, P = 24.8 atm

Volume, V = 2.00 L

Temperature, T = (120 + 273.15) K = 393.15 K

No. of moles, n =??

Molar gas constant, R= 0.082 Latm/molK

Putting the values in the above Equation,

n = PV / RT

n = 24.8 x 2 / 0.082 x 393.15

n = 1.54 moles

Now molecular weight of water = 18 g/mol

So, wt. of water produced = (1.54 × 18) g = 27.7 g [tex]H_2O[/tex]

Here [tex]MgSO_4. xH_2O[/tex] used = 54.2g

So, in 54.2 g, [tex]MgSO_4. xH_2O[/tex], [tex]H_2O[/tex] present = (54.2 - 27.7) g = 26.5g

Molar mass of [tex]MgSO_4[/tex] = 120.36 g/mol.

So,

Here in 26.534 g [tex]MgSO_4[/tex], water present 27.7g

So,

In 120.36g [tex]MgSO_4[/tex], water present = 27.7 / 26.5 x 120.36 = 125.8g

So, no. of moles of [tex]H_2O[/tex] = 125.8 / 18 = 6.98 = 7 moles

Therefore, with one mole of [tex]MgSO_4[/tex], water molecule present = 7 moles.

Result:

Thus, Molecular formula is [tex]MgSO_4.7H_2O[/tex]

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when 40. 0 g of ammonia and 50. 0 g of oxygen are mixed and allowed to react .1.57 moles is the theoretical yield of water and 1.87 moles in balanced chemical

= 1*14.01 + 3*1.008

= 17.034 g/mol

mass(NH3)= 40.0 g

use:

number of mol of NH3,

n = molar mass of ammonia  

=(40 g)/(17.03 g/mol)

= 2.348 mol

Molar mass of O2 = 32 g/mol

mass(O2)= 50.0 g

use:

number of mol of O2,

n = molar mass of oxygen

=(50 g)/(32 g/mol)

1.562 mol  or 1.57 mol

Balanced chemical equation is:

4 NH₃ + 5 O₂ -> 6 H₂O + 4NO

4 mol of NH3 reacts with 5 mol of oxygen  for 2.348 mol of NH3, 2.935 mol of O2 is required  But we have 1.562 mol of O2  so,  use O2 in next calculation

According to balanced equation  mol of H2O formed = (6/5)* moles of oxygen

= (6/5)*1.562  

= 1.875 mol

= 1.87 mol

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Answer:

there you go man

Explanation:

Answer:

Claim: The jump in ionization energy from I2 to I3 is the largest.

Evidence: You would have to search some up but the jump is from 1450.7 kj/mole to 7732.7 kj/mole. You could also say that magnesium has an electron configuration of [Ne] 3s2 and after removing the two outer valance electrons the next electrons being removed would be core electrons.

Reasoning: Core electrons need lots of energy to remove from the atom, while valance electrons are easy to remove. The 2nd electron removed is a valance electron, while the 3rd electron removed is a core electron. Thus, we should expect that the energy needed to remove a hard to remove electron (the 3rd electron) would be much more than the energy needed to remove the easy to remove electron (2nd) and we should expect a large jump of ionization energy from I2 to I3.

Answer:

5.00 L.

Explanation:

What is given?

Volume 1 (V1) = 4.37 L.

Temperature 1 (T1) = 37.12 °C + 273 = 310.12 K.

Temperature 2(T2) = 81.93 !°C + 273 = 354.93 K.

What do we need? Volume 2 (V2).

Step-by-step solution:

This is a Charles's Law problem. Charles's Law states that the volume of a given mass of gas varies directly with the absolute temperature of the gas when pressure is kept constant. The absolute temperature is temperature measured with the Kelvin scale.

The formula that we're going to use based on this law is:

Where V is volume and T is temperature.

We want to find volume 2 (V2), so let's solve for 'V2' and replace the given data that we have in the new formula, like this:

The new volume is 5.00 L.

Answer:

26

Explanation:

False, as Chlorine and chloramine are the major disinfectants used in public water systems.

What is the purpose of using chlorine to clean water sources?

Chlorine helps lessen the taste and odor of water while also eradicating harmful microorganisms including viruses, parasites, and bacteria. The slime bacteria, molds, and algae that frequently develop on the walls of water mains, in storage tanks, and in water supply reservoirs are also helped to get rid of by chlorine.

Chemical compounds with chlorine and ammonia are referred to as chloramines. The specific form of chloramine used to disinfect drinking water is known as monochloramine, and it is added to water at concentrations that are effective at killing bacteria while maintaining water safety.

Thus the two main disinfectants utilized in public water systems are chlorine and chloramine.

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Asexual reproduction results in two organisms with the same parent and the same DNA.

Asexual reproduction produces offspring which are genetically identical to the parent because the offspring are all clones, that is, identical copies of the original parent.

Asexual reproduction in animals occurs through various process such as fission, fragmentation, budding and parthenogenesis. A single individual can produce offspring asexually and large numbers of offspring can be produced quickly with asexual reproduction.

A new potato growing from an old potato can be an example of asexual reproduction. Variation is not possible or significantly reduced in asexual reproduction. Asexual reproduction results in offspring with the same combination of genetic information as the parents.

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Kinetic energy change is represented by a heat change in the heating curve. The letters which represents a change in kinetic energy are A,C,E.

It is a form of energy by virtue of the motion of molecules. Kinetic energy is directly proportional to mass and velocity of the moving object.

According to kinetic theory of gases, as the temperature increase, the molecules acquire more energy to move apart and thereby, the kinetic energy also increases.

For an endothermic process like, sublimation heat energy is absorbed and thus kinetic energy is increased. From the graph, it is clear that, the in step A to B and B to D as well as D to E are associated with a heat change.

Stages B and D are stable and therefore, A, C and E are associated with a change in kinetic energy.

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The answer is true. Industrial environments use special systems to eliminate noxious or toxic fumes.

What is meant by toxic fumes?

Hazardous air pollutants from sources like solvents, asbestos-containing building materials, and cigarette smoke can also be found in indoor air. The most well-known hazardous gases include phosgene, chlorine, nitrogen dioxide, and carbon monoxide. Emissions from coal-fired power plants and industrial gas refineries are the main sources of harmful air pollutants outside.

The absorption method is used to reduce gaseous pollution in industrial environments. These toxins come into touch with a liquid, like water. The liquid then absorbs the toxic fumes. The most popular equipment for reducing toxic fumes emissions includes cyclones, electrostatic precipitators, fabric filters, and wet scrubbers.

Therefore, toxic fumes are eliminated by industrial environments using special systems.

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Taking into account the definition of density, the volume that the white powder will occupy is 23.148 cc.

Density is defined as the property of matter, whether solid, liquid, or gas, that allows the amount of mass in a given volume of a substance to be measured.

The expression for the calculation of density is the quotient between the mass of a body and the volume it occupies, considering that that density is inversely proportional to volume:

density= mass÷ volume

In this case, you know that:

Replacing in the definition of density:

2.16 g/cc= 50 g÷ volume

Solving:

2.16 g/cc ×volume= 50 g

volume= 50 g÷ 2.16 g/cc

volume= 23.148 cc

In summary, the volume is 23.148 cc.

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A tanker car holds 34,500 US gallons mL does a tanker hold is 102.9×10²¹ ml

Gallon is the a united states unit of liquid capacity equal to four quarts and the tanker means a cargo ship fitted with tanks for carrying liquid in bulk

Here given data is

1 gallon = 3.79 liters

34, 500 gal = 34, 500 gal×1 gallon

34, 500 gal = 1.30×10²¹ ml

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The wavelength in nm of a wave that has a frequency of 2.22 x 10¹⁴ Hz is 1.35 × 10-⁶ m.

Wavelength is the length of a single cycle of a wave, as measured by the distance between one peak or trough of a wave and the next.

Wavelength is denoted by λ, and corresponds to the velocity of the wave divided by its frequency i.e. λ = v/f

According to this question, the frequency of a wave is given as 2.22 x 10¹⁴ Hz. The wavelength can be calculated as follows:

λ = 3 × 10⁸ ÷ 2.22 x 10¹⁴

λ = 1.35 × 10-⁶ m

Therefore, 1.35 × 10-⁶ m is the wavelength of the wave.

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The molecular formula of the compound is PCl₃ if the molecular mass of the compound is 137.32 g/mol.

An empirical formula can be described as a formula that tells about the relative ratios of different atoms in a compound.

The empirical formula for this compound containing phosphorus and chlorine can be calculated as follows;

As the compound is composed of 22.5% phosphorous and 77.5% chlorine, therefore;

Phosphorus = (22.5/100) × 137.32 = 0.225 × 137.32 = 30.897

Chlorine = (77.5/100) × 137.32 = 0.775 × 137.32 = 106.423

Now we can find the moles of each atom by using their molar mass as follows;

Phosphorus = 30.897 ÷ 30.97 = 0.998 moles

Chlorine = 106.423 ÷ 35.453 = 3.002 moles

Now dividing each mole value by the smallest determined number of moles (0.998) as follows;

Phosphorus = 0.998 / 0.998 = 1 mole

Chlorine = 3.002 / 0.998 = 3.008 ≈ 3 moles

Therefore the molecular formula of the compound will be PCl₃.

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Answer:

b

Explanation:

Answer:

CuI

Explanation:

Cu2+ + 2I− → CuI + 0.5 I2

Answer:

CuI2

Explanation:

valency of copper(II) is 2 and iodine is 1

The energy in photosynthesis is stored in the chemical bonds of the sugar molecules (option B).

Photosynthesis is the metabolic process by which green plants synthesize their own food (sugar) using energy from sunlight.

During photosynthesis, photoautotrophic organisms convert light energy into chemical energy by combining water and carbon dioxide into carbohydrates and waste oxygen using energy from the sun.

The carbohydrates produced is usually glucose sugar, which is capable of storing chemical energy in the bonds of its atoms. This energy is released during a catabolic process called cellular respiration.

Therefore, it can be said that chemical bonds are the storage locations for the energy synthesized during photosynthesis.

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There are 0.73900 moles and 4.449 x 10^23 atoms in a sample of gold that has a mass of 145.56 grams.

Using the formula below, determine the number of moles of gold in 145.56 grams of gold. (MM of gold = 196.96657 g/mol)

number of moles = mass/MM

number of moles = 145.56 g / 196.96657 g/mol

number of moles = 0.73900

Multiply the Avogadro's number to the number of moles to get the number of atoms in 145.56 grams of gold.

number of atoms = moles(Avogadro's number)

number of atoms = 0.73900 moles Au(6.02214076 × 10^23 atoms/mole)

number of atoms = 4.449 x 10^23

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