electrons may be in more than one orbital at once, due to the general possibility of superposition of quantum state

Answer:

11no:4.9%

Explanation:

4.9% bones are there in the human body in hips and legs

Answer: "homogenous mixture." out of these 2

brine, salt water, particularly a highly concentrated water solution of common salt (sodium chloride).

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The calculated kinetic energy is 10.2 J

Measurements have been made of the cross section for the elastic scattering of electrons with energies lower than 10.2 eV by free hydrogen atoms. The signal from the electrons that were scattered by the beam appeared at the modulation frequency and at a predetermined phase, allowing for their identification. The ratio of the hydrogen atoms and the molecule's cross sections was directly measured, and absolute values for the atomic cross section were calculated using the absolute molecular cross-section.

The experimental findings support the theory.

Electron energy in the ground state is 0.13.6

In the second energy level, 3.4

Total energy level difference = 10.2

Thus, kinetic energy equals 10.2.

Therefore, we are aware that some electron kinetic energy was transmitted to the hydrogen atom during an elastic collision.

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The SI unit for expressing the mass of a block of Au is gram with SI unit symbol g.

SI unit is a measurement unit which is universally accepted system. It is used for technical and scientific work.

The gram is the unit of mass in the International systems of units, SI. Gram is equal to 1/1000th of a kilogram.

Mass is used to measure an objects's weight. Most common units to express mass in metric system is gram and kilogram. The standard unit of mass in SI system is kilogram (Kg). The reason to use kilogram is because gram is a small amount.

Although, in case of Au, the SI unit to express mass of Au is g.

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468 KJ of electrical energy is converted to light and thermal energy by a 130 w light bulb in one day.

Electrical energy is produced when electrically charged particles move, producing energy. Electrical energy is a general term that describes the energy that has been transformed from electric potential energy. Electric current and electric potential are given by an electrical circuit that serves as the source of this energy (e.g., provided by an electric power utility). This electric potential energy stops being electric potential energy after it has been changed into another form of energy.

P = 130W  is the lightbulb's power.

Within an hour, we must locate the electrical energy that the lightbulb generated. We are aware that the amount of electrical energy generated per unit of time is what provides electricity.

1 hour equals 3600 seconds.

p=E/T

E= p * T

E= 130 * 3600

E= 468000 joule

E = 468 kJ

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The bohr radius theoretically is the equal distance an electron can approach the nucleus in the hydrogen atom.

Bohr radius named after by Niels Bohr because Niels Bohr proposed the bohr model of an atom. Bohr radius is the mean radius of the orbit of an electron around the nucleus of a hydrogen atom at its ground state and is approximately equal to 5.29177×10⁻11 . the Bohr radius approximately equal to the most probable distance between the nucleus and the electron in a hydrogen atom in its ground state. so theoretically distance an electron is equal approach the nucleus in the hydrogen atom.

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Relative conductance is the ability of a specific conductor to carry electrons as compared to the ability of a copper  conductor to carry electrons.

The relative conductance (g'X) of a given ionic species is the conductance for that single ion divided by the total conductance for all of the ionic species (i.e., g'X = gX/g Total). The flow of free electrons in the form of an electric current is referred to as conduction. The inverse of resistivity is conductivity. That is 1/ and has a siemens per meter, or S/m, value. From zero (for a perfect insulator) to infinity, conductivity is possible (for a perfect conductor). A super conductor has nearly no ohmic resistance and limitless conductance

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The mass expression for the system is K= (aH₂)² × aO₂ / (aH₂O)² = 5.31× 10⁻¹⁰.

First, we have to write a balanced chemical equation, i.e

2H₂O(g) ⇄2H₂(g)+O₂(g)

Now, from the above equation we can write mass action expression,

K= (aH₂)² × aO₂ / (aH₂O)² = 5.31× 10⁻¹⁰.

The mass action law provides simple method to write the expression for the equilibrium constant of any reaction. it is a universal law and applicable to all chemical reactions.

The ratio of the concentrations of the reactants and products is known as Equillibrium constant. It is represented as (K).

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Barium hydroxide is a strong diprotic base and phosphoric acid is a weak triprotic acid. Therefore the balanced acid-base reaction requires a 3:2 molar ratio:

First we find the moles of barium hydroxide reactant:

Volume of barium hydroxide (given) = V1=0.0300 L

Molarity of barium hydroxide (given) = C1=0.15 M

Moles of barium hydroxide = n1=V1×C1=0.0045 mol

For neutralization we require 2/3 the moles for phosphoric acid:

Moles of phosphoric acid = n2=23×0.0045 mol=0.0030 mol

Volume of phosphoric acid (given) = V2=0.0500 L

Molarity of phosphoric acid = n2V2=0.0030 mol/0.0500 L=0.060M

What is Neutralization Reaction?

3Ba(OH)2+2H3PO4→Ba3(PO4)2+6H2O

Conjugate base and acid are the results of the reaction between a Bronsted acid (proton donor) and a Bronsted base (proton acceptor). When both of these reactants have been completely consumed, leaving only the product species, a neutralisation reaction takes place. The stoichiometry of the balanced acid-base reaction equation is used to determine the ratio of molar amounts needed for neutralisation.

Therefore,

If 30.0 ml of 0.15 m ba(oh)2 was needed to neutralize 50.0 ml of an h3po4 solution. what is the concentration of the original h3po4 solution?

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Thermal equilibrium is established after a while as a result of heat transfer between the water and the air in the room.

Option B is correct

What is Thermal equilibrium?

If there is no net transfer of thermal energy when two physical systems are connected by a heat-permeable route, then they are in thermal equilibrium. Thermal equilibrium is in accordance with the first law of thermodynamics.

When a system's internal temperature is both uniformly distributed and stable over time, it is considered to be in thermal equilibrium with itself. Systems that are in thermal equilibrium are always in systems that are in thermodynamic equilibrium, while the reverse is not always true.

The two systems may reach thermal equilibrium without achieving thermodynamic equilibrium if the connection between them allows the transfer of energy as a "change in internal energy" but not the transfer of matter or energy as work.

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true, I'm not 100% sure if it's true though

The density of the chocolate, given the data is 11.15 g/cm³

The density of a substance is simply defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as

Density = mass / volume

The following data were obtained from the question:

The density of the chocolate can be obtained as follow:

Density = mass / volume

Density of chocolate = 633.6 / 568.176

Density of chocolate = 11.15 g/cm³

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The weight of carbon that combines with 16 g of oxygen in the formation of CO2 is 12 g.

The law of multiple proportions was given by Dalton in 1803.

According to this law, when two elements combine to form more than one compound, the masses of one element that combine with a fixed amount of another element, are in the ratio of whole numbers.

For example,

hydrogen combines with oxygen to produce two compounds, water(H₂O) and hydrogen peroxide(H₂O₂).

Hydrogen + Oxygen ⇒ Water

   2 g               16 g         18 g

Hydrogen + Oxygen ⇒ Hydrogen Peroxide

    2g               32 g                 34 g

Similarly, carbon also reacts with oxygen to form two different compounds, carbon dioxide(CO₂) and carbon monoxide(CO).

Carbon + Oxygen ⇒ Carbon Dioxide

 12 g          32 g                44 g

Carbon+ Oxygen  ⇒  Carbon Monoxide

 12 g           16 g                28 g

Thus, the weight of carbon that combines with 16 g of oxygen in the formation of CO₂ is 12 g.

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Re absorption of H[tex]CO_{3}[/tex] and excretion of H+ restores acid-base balance through the renal control mechanisms.

What is renal mechanism?

The renal system consists of the kidney, ureters, and therefore the urethra. the general function of the system filters approximately 200 liters of fluid a day from renal blood flow which allows for toxins, metabolic waste products, and excess ion to be excreted while keeping essential substances within the blood

Why is renal function important?

Renal function is important for homeostasis. The kidneys play important pleiotropic roles including removal of metabolic waste products and maintenance of water–electrolyte balance and vital sign . Early diagnosis of renal dysfunction and institution of appropriate therapy are vital to survival.

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the best choice of reagent to perform the following transformation is H₂O and H₂SO₄

In chemistry , the term "reagent" denotes a chemical ingredient, this will also be stated as an "Orko". this is often typically found in a compound. (a compound or mixture, typically of inorganic or small organic molecules) introduced to cause the specified transformation of an organic substance.Reagents could also be compounds or mixtures. In chemistry , most are small organic molecules or inorganic compounds.

Reactant: Reactants are the starting materials that undergo changes during a reaction .

Reagent: Reagents are the compounds that are added to a system so as to cause a chemical reaction.

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The acceleration of the rocket would be 150 m/s^2.

Initial velocity, u=1000 m/s

Final velocity, v=2500 m/s

Time taken, t=10 seconds.

According to equation of motion,

v=u+at

2500=1000+10a

2500-1000=10a

1500=10a

a=150 m/s^2.

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I have 82 ml of a solution with a molarity of 5.3 m nabr. We can make 395.1 ml ,1.1M  NaBr solution from 82 ml of 5.3 M NaBr solution.

What is molarity?

The number of moles of solute per litre of solution is known as molarity or molar concentration, and it may be determined using the equation: To convert between the mass or moles of solute and the volume of the solution, utilise molar concentration.

The ratio of the moles of the solute whose molarity needs to be calculated is multiplied by the volume of solvent needed to dissolve the supplied solute.

Molarity (M) = moles of solute ÷ liters of solution

I have 82 ml (= 0.082 liter)  of a solution with a molarity 5.3 M NaBr. Here the moles of solute is-

        5.3 = Moles of solute ÷ 0.082

Or,   Moles of solute =  0.4346 moles

Now if we dilute the 82 ml, 5.3 M NaBr solution to make a new solution with a molarity of 1.1 M , the total volume of the new solution will be-

       1.1 = 0.4346 ÷ liters of solution

Or,   liters of solution = 0.3951

0.3951 liters = 395.1 ml

So,  we can make 395.1 ml ,1.1M  NaBr solution from 82 ml of 5.3 M NaBr solution.

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To make pizza dough, Luca combines 50 ml of milk for every 250 ml of flour. 150 ml of milk does combine with 750 ml of flour.

calculation :

[tex]\frac{50}{250}[/tex] × 750

= 150 ml

Is pizza dough just bread dough?

The distinction between Pizza and Bread dough is Pizza dough is made with a more elevated protein flour other than that they both use the exact ingredients, yeast, flour, salt, and water. Let the dough grow before freezing, then split the dough into your preferred pizza portions, put it in airtight freezer bags and freeze.

Pizza dough is made up with five basic ingredients flour, salt, yeast, oil, and water.

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The bonding expected for each material is covalent ,ionic and metallic bonds .

About bonds :

The force of attraction that leads to holding of atoms or ions together in a molecule or crystal is said be bonding. Bond formation can happen by either attraction or transfer of electrons. There are single, double, and triple bonds. There are many sorts of bonding namely:

Covalent (sharing of electrons takes place).

Ionic (transfer of electrons takes place)

Metallic (ionized atoms of metals and therefore the sea of electrons around them).

Brass (a copper-zinc alloy)

Brass is an alloy of metal that's copper and zinc. Hence, the metallic bonding is present within the brass.

Rubber

It is a polymer whose monomer unit is isoprene, which may be a covalent compound. The isoprene units are attached in repeated units to make rubber by covalent bonding.

Barium sulfide ()

Due to the large electronegativity difference between barium and sulfur, barium sulfide is an ionic compound. Thus, ionic bonding is present in barium sulfide.

Solid xenon

Only xenon atoms are present in solid xenon which are interacted by weak Van der Waal's interactions.

Bronze

Bronze is an alloy of metal that's copper and tin. Hence, the metallic bonding is present within the brass.

Nylon

It is a polymer whose monomer unit is caprolactam, which may be a covalent compound. The caprolactam units are attached in repeated units to make nylon by covalent bonding.

Aluminum phosphide ()

Aluminum phosphide may be a covalent compound and thus involves covalent bonding.

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If one or more nucleotide pairs are deleted from a DNA strand, this is known as a frameshift mutation.

An indel (insertions or deletions) of a number of nucleotides in a DNA sequence that is not divisible by three results in a frameshift mutation, also known as a framing error or reading frame shift. The triplet structure of gene expression by codons means that an insertion or deletion might alter the reading frame (the arrangement of the codons), leading to a translation that is entirely different from the original. A frameshift mutation is different from a single-nucleotide polymorphism, in which a nucleotide is substituted rather than inserted or deleted, and the protein is more altered the sooner in the sequence the deletion or insertion occurs.

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To get 85g of nickel, 0.304 kilogram of the ore must be mined.

27.9% of what = 85g

0.279 * x = 85

x = 304.6g = 0.304kg

What is ore?

Ore is a naturally occurring rock or silt that has one or more precious minerals in it that may be extracted, processed, and sold for a profit. Metals are the most common valuable minerals found in ore. To remove the valuable metals or minerals from ore, it is mined from the earth and then processed or refined, frequently by smelting.

An ore is a naturally occurring collection of minerals from which metals can be profitably extracted. Originally, the term "ore" solely referred to metallic minerals, but today it also refers to nonmetallic materials that have been deposited in rock after it has formed.

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The pH of this buffer after adding 2.5 ml of 10m KOH to the solution is 7.73

The HOCl/KOCl buffer has a pKa of 7.46. We can use the H-H equation to determine the pH of this buffer:

[tex]pH = log\frac{ [A^{-} ] }{[HA]} + pKa[/tex]

[tex]pH = 7.46 + log\frac{[KOCl] }{ [HOCl]}[/tex]

Where [] represents the molarity (or moles) of each compound.

Initial HClO and NaClO moles:

 HOCl :-0.500L * (0.12mol / L) = 0.06 moles  HOCl

 KOCl:- 0.500L * (0.080mol / L) =0.04 moles KOCl

HOCl now reacts with KOH to form KOCl:

[tex]HOCl + KOH[/tex]→ [tex]KOCl[/tex] + [tex]H_{2} O[/tex]

The moles of KOH in the reaction are as follows:

[tex]2.5x10^{-3} L * (10mol/L)=0.025 moles KOH[/tex]

That is, 0.025 moles of HOCl are consumed and 0.025 moles of KOCl are produced after the reaction.

Following the reaction, moles are:

The final moles:

HOCl:- 0.06mol - 0.025mol = 0.035mol HOCl

KOCl :-0.04mol + 0.025mol = 0.065mol KOCl

Replacing in the H-H equation:

[tex]pH = 7.46 + log\frac{ [0.065mol] }{ [0.035mol]}[/tex]

pH = 7.73

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A cell containing 97% h₂o is placed into a 90% h₂o  solution. the solution is to the cell and there the size of the cell will shrink .

             Solute + Solvent = Solution

The cell will cremate because the water in the solution will gets released and there the state of equilibrium exists and that can be determined as Hypertonic solution.

A liquid that has a higher concentration of dissolved particles than regular cells and blood do, like salt and other electrolytes. For instance, wounds are soaked in hypertonic liquids.

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The mass upon volume take the measure of the substance is known to be its density.

As we know the formula of density is:

density = mass / volume. ------ (1)

Mercury is a heavy silver colored element.

Also called as a quicksilver , it's formula is Hg.

Mercury's atomic number is 80.

According to question,

It is given in the question,

Mass of mercury ( Hg) = 537.0537.0 g

Volume of mercury (Hg)  = 39.9939.99 ml

Now putting the given values in formula (1)

density = 537.0537.0 / 39.9939.99

​density = 13.42 g/ml

Hence, the density of mercury is 13.42 g/m

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The answer would be mantle rocks i.e., the partial melting of mantle rocks will yield basaltic magma, diorite granite peridotile rhyolite andesite.

The mantle rocks are partially melted because the mantle is comprises of many various kinds of minerals, it does not melt accordingly. As minerals with lesser melting points converted into liquid magma, those with inflated melting points endure as solid crystals. This method is called as partial melting.

The properties that aim partial melting Rocks is because of decompression, heat input, or addition of a flux.

Mantle rocks are also known as semi molten rocks , generally silicates are found there.

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The chemical formula for octane is: ch3ch26ch3 114073 is the molar mass of octane.

The molar mass of a chemical compound is determined in chemistry by dividing the mass of a sample of that compound by the quantity of that compound, which is the number of moles in that sample, measured in moles. A substance's molar mass is a bulk attribute rather than a molecular one. The compound's molar mass is an average over multiple samples, each of which will likely have a different mass because of the existence of isotopes.

The molar mass is most frequently calculated from the standard atomic weights, making it a terrestrial average and a function of the relative abundance of the constituent atoms' isotopes on Earth. The molar mass is suitable for converting between a substance's mass and a quantity.

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If solution of Co(NO3)3 and KOH are mixed then following reaction will occur:

Co(NO₃)₃ + KOH → Co(OH)₃ + KNO₃

let us balance the equation:

Co(NO₃)₃ +3 KOH → Co(OH)₃ +3 KNO₃

Now we will split strong electrolyte into ions:

Co³⁺ + 3NO₃⁻ + 3K⁺ + 3OH⁻ = Co(OH)₃  +   3K⁺ + 3NO₃⁻

So the net ionic equation will be

Co³⁺  + 3OH⁻ = Co(OH)₃  

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2 precipitation reactions will occur.

A "chemical reaction occurring in an aqueous solution when two ionic bonds combine, yielding the creation of an insoluble salt" is what is meant by the term "precipitation reaction." Precipitates are the insoluble salts created during precipitation reactions. Precipitation reactions are often double displacement events that result in the formation of the precipitate, a solid form of residue.

The creation of insoluble salts that precipitate out of the solution results from these reactions when two or more solutions with various salt concentrations are mixed. The chemical reaction between potassium chloride and silver nitrate, in which solid silver chloride is precipitated out, is one of the greatest examples of precipitation reactions. This is the precipitation reaction's byproduct, the insoluble salt.

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The thermal energy of solid state is the least and the thermal energy for gaseous state is maximum.

Any substance that is present around us exists in three states i.e, solid, liquid and gas.

The two major factors that affect the state of the substance are thermal energy and intermolecular interactions. These factors are shown in the adjoining image.

When energy in the form of heat is provided to ice, it first converts into liquid water and finally into steam. This conversion has been shown in the graph present in the adjoining diagram.

As energy is added to it, the solid state has the lowest energy, the energy of the liquid state is more than the solid state and the maximum energy is of gaseous state.

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