Calculate the volume of 0. 875 mol/dm3 NaOH solution needed to make up a 100. 0 ml of a diluted solution with a concentration of 0. 235 mol/dm3 NaOH

The mass of thallium formed by the passage of 7,514 amps for 4.52 hours through the electrolytic cell is 225.1 g.

To answer this question, we need to use Faraday's law of electrolysis, which states that the mass of a substance formed at an electrode during electrolysis is directly proportional to the total charge passed through the cell and the molar mass of the substance.

The total charge passed through the cell can be calculated as follows:

total charge = current x time = 7,514 amps x 4.52 hours x 3600 seconds/hour = 1.09 x \(10^8\) C

The molar mass of thallium is 204.38 g/mol. Using Faraday's law, we can calculate the mass of thallium formed as:

mass of Tl = (total charge / Faraday's constant) x (1 mol Tl / 1 Faraday) x (204.38 g Tl / 1 mol Tl)

where Faraday's constant is 96,485 C/mol.

Substituting the values, we get:

mass of Tl = (1.09 x \(10^8\) C / 96,485 C/mol) x (1 mol Tl / 1 Faraday) x (204.38 g Tl / 1 mol Tl)

mass of Tl = 225.1 g

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The total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

To calculate the total charge that flows while the battery is being charged, we can use the relationship between electrical energy, potential difference, and charge.

The electrical energy (E) stored in the battery is given as 64 mega Jules (64 MJ). The potential difference (V) provided by the battery is 330 volts. We know that the energy (E) is equal to the product of the potential difference (V) and the charge (Q):

E = V * Q

Since the charging process is 100% efficient, all the electrical energy supplied is stored in the battery. Therefore, we can rearrange the equation to solve for the charge (Q):

Q = E / V

Substituting the given values, we have:

Q = 64 MJ / 330 V

To perform the calculation, we need to convert mega Jules (MJ) to joules (J) since the SI unit of energy is joules. One mega Joule is equal to 1 million joules:

Q = (64 * 10^6 J) / 330 V

Calculating the division:

Q ≈ 193,939.39 Coulombs

Therefore, the total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

This value represents the quantity of electric charge transferred during the charging process, and it indicates the amount of electricity that enters the battery.

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Answer:

Increased temperature often leads to an increase in the kinetic energy of the reacting particles, which can help to overcome the activation energy needed to initiate the reaction.

The missing parts in the table is given below

An atom is composed of a centrally placed nucleus (containing protons and neutrons) and a cloud of electrons revolving round it.

Mass number (number of nucleon) = Proton + Neutron

Charge = Proton – Electron

i. Determination of the nucleon number

Nucleon number = Proton + Neutron

Nucleon number = 11 + 12

Nucleon number = 12

ii. Determination of the symbol

We'll begin by determining the charge of the particle. This is illustrated below:

Charge = Proton – Electron

Charge = 11 – 10

Charge = +1

From the periodic table, the element with proton number of 11 is sodium, Na. Since the particle B has a charge of +1, the symbol of particle of B is Na⁺

i. Determination of the number of electrons

Charge = Proton – Electron

–2 = 8 – Electron

Collect like terms

–2 – 8 = – Electron

– 10 = – Electron

Electron = 10

ii. Determination of the nucleon number

Nucleon number = Proton + Neutron

Nucleon number = 8 + 8

Nucleon number = 16

i. Determination of the number of protons

Charge = Proton – Electron

3 = Proton – 10

Collect like terms

3 + 10 = Proton

Proton = 13

ii. Determination of the number of neutrons

Nucleon number = Proton + Neutron

28 = 13 + Neutron

Collect like terms

28 – 13 = Neutron

Neutron = 15

Complete question

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Some of the properties of carbon that make it possible for millions of carbon compounds to occur naturally include:

Carbon compounds are compounds that are composed mainly of carbon bonded to other elements.

Carbon compounds may be organic or inorganic in nature.

Carbon due to some of its unique properties is responsible for the existence of many compounds in living organisms known as organic compounds.

Some of the unique properties of carbon include:

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Total heat generated by 2 mole of TiO2(s) is 4.963kJ.

The amount of heat released in the reaction of 2.89 mol of TiO2(s) can be calculated using the following equation: q = nCΔT, where n is the number of moles, C is the specific heat capacity of TiO2, and ΔT is the change in temperature.

The specific heat capacity of TiO2 is 683. 697. J/kgK. and the change in temperature is is 25k. By plugging in the values and converting J to kJ,

q = 2.89 * 25 * 683.697

=> 4963.35

In brief, the amount of heat released by 2.89 mol of TiO2(s) is 4.963kJ.

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Complete question :

determine how much heat (in kj) of 2.89 mol of tio2(s) with a temperature difference of 25k

The hybrid orbitals used by the bolded atom in acetone (CH₃COCH₃) are sp2 (Option B).

Hybrid orbitals result when atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. The wave functions combine through a process called hybridisation. The central carbon atom is bonded to three other atoms: two carbon atoms and one oxygen atom. It has a double bond with the oxygen atom and single bond with the two carbon atoms. This arrangement corresponds to a trigonal planar geometry, which means the hybrid orbitals used by the central carbon atom in acetone are sp2.

Thus, the correct option is B (sp2).

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According to stoichiometry of the given chemical equation and mole concept, 215.28 g  of oxygen are needed to react with 8.97 moles of iron.

It is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.

Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.As 4 moles of iron react with 3 moles of oxygen thus, 8.97 moles will react with 8.97×3/4=6.72 moles of oxygen which is 6.72×32=215.28 g of oxygen.

Thus,215.28 g  of oxygen are needed to react with 8.97 moles of iron.

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The remaining mass of radioactive elements with 60 years of half-life is 1000 particles.

We need to know about the half-life of the radioactive elements to solve this problem. The radioactive element will decay over time and follow the equation

N = No(1/2)^(t/t'')

where N is the final quantity, No is the initial quantity, λ is the decaying constant, t is time and t'' is the half-life of a radioactive element.

From the question above, we know that

t'' = 60 years

No = 2000 particles

t = 60 years

Calculate the remaining mass

N = No(1/2)^(t/t'')

N = 2000 x (1 / 2)^(60 / 60)

N = 1000 particles

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Explanation:

0 is the odd one...............

and rest are metals and they lose electron and 0 gain electron and is non metal

Taking into account the definition of frecuency, the statement "The number of waves that pass a point in 1 second" describes the frequency of a wave.

Frequency is the number of vibrations that occur in a unit of time. Its unit is s⁻¹ or hertz (Hz).

In other words, the frequency in wave phenomena, such as sound, electromagnetic waves (such as radio or light), electrical signals or other waves, expresses the number of times the phenomenon is repeated per unit of time. For example, if a wave repeats ten times per second, it means that it has a frequency of ten cycles per second.

Finally, the statement "The number of waves that pass a point in 1 second" describes the frequency of a wave.

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Water molecules are held to one another by hydrogen bonding.

The oxygen atom has a slightly negative charge, and the hydrogen atoms have a slightly positive charge, making water molecules polar, or having an unequal distribution of electrons. This polarity enables a hydrogen bond to form between two neighboring water molecules by attracting the hydrogen atoms of one water molecule to the oxygen atom of the latter. Although each of these bonds is weak, they are strong enough to hold the molecules of water together, giving the water its cohesive qualities. Additionally, hydrogen bonding explains why water has a low surface tension and a high boiling temperature, and why ice floats on water.

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The correct answer is 0.15.

We are aware that there is 0.05 mol of an unidentified hydrocarbon we will refer to as "X" and that its burning produces 6.6 g of carbon dioxide and 3.6 g of water.

These quantities might be converted to moles by applying the following formula:

amount= mass/ relative atomic mass

Thus, the following equation may be written for H2O: moles = 3.6 / 18 = 0.2 and for CO2: moles = 6.6 / 44 = 0.15.

0.05X + x'O2 = 0.15CO2 + 0.2H2O

This may be made simpler by dividing through by 0.05 (this step is likely to be the most helpful to you), resulting in:

1 x + x O2 = 3 co2 + 4 H2O

The hydrocarbon must have been the source of all the carbon in the carbon dioxide and all the hydrogen in the water.

Accordingly, 4 x 2 = 8 moles of H and 3 x 1 = 3 moles of C.

There are 3/1 = 3 Cs and 8/1 = 8 Hs in one X molecule.

This clearly identifies C3H8 or propane as the hydrocarbon X (dividing by 1 seems unnecessary, but it illustrates the process to use if there were more than one mol of X in the first equation).

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Answer:

standard carbon atom

Explanation:

Answer:

Explanation:

This is an isotope of carbon, more specifically, carbon-14. Carbon 14 has 6 protons, making the element carbon, and eight neutrons since 14-6 = 8.

A 1 liter volumetric flask can be filled with distilled water until it reaches the graduation mark, 58.44 g of NaCl and this amount of salt can be used to create a 1M solution of the salt.

In this case, we must determine the volume of the solution as well as the mass of sodium chloride (NaCl) required to make a 1 molar solution of the salt.

The molarity formula,  

Molarity=Moles of Solute Volume of Solution, must be used.

The whole solution, in steps:

The moles of NaCl must first be determined. The solution has a 1 M molarity and a 1 L volume.

As a result, moles of NaCl may be computed as,

1 liter of solution equals 1 mole of NaCl.

1 M x 1 L equals 1 mol of NaCl.

In light of this, there is one mol of NaCl in the solution.

Using the quantity of NaCl's moles, we must now determine the mass of NaCl.

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58.44 g/mol is the molar mass of sodium chloride, which has a molecular weight of 1 mol.

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So, to create a 1 M solution, we'll need 58.44 g of NaCl.

We will now talk about making a NaCl solution at a single molar strength.

A 1 liter volumetric flask can be filled with distilled water until it reaches the graduation mark, 58.44 g of NaCl and this amount of salt can be used to create a 1M solution of the salt.

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The equation that can be used to find the pressure of the gas when the volume is changed is P(v) = 500/v.

An inverted container filled with water can be used to collect the gas produced during a chemical reaction and estimate its volume. Water is forced out of the container by the gas, and the amount of liquid expended serves as a gauge for the gas's volume.

Boyle's law, which states that the volume of a given quantity of gas held at constant temperature is inversely proportional to the pressure under which it is measured, encapsulates this principle.

p(v) = pressure of a gas

v = volume of the gas

P(v) varies inversely with v

let k = constant of proportionality

P(v) = k/v

If P(v) = 25 kg/cm² and v = 200cm²

Therefore,

P(v) = k/v

25 = k / 200

25 × 200 = k

k = 5,000

substitute the value of k into the equation

So, P(v) = 500/v

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The preparation of bases involves several methods that are used to create substances with basic or alkaline properties are Reaction of metal with water, Reaction of metal oxide with water, Neutralization reaction, Ammonia gas dissolving in water and Partial neutralization of a strong base with a weak acid.

Reaction of metal with water: Certain metals, such as sodium or potassium, react with water to form hydroxides. For example, sodium reacts with water to produce sodium hydroxide (NaOH).

Reaction of metal oxide with water: Metal oxides, such as calcium oxide (CaO) or magnesium oxide (MgO), can be added to water to form metal hydroxides. This process is known as hydration. For instance, when calcium oxide reacts with water, it forms calcium hydroxide (Ca(OH)2).

Neutralization reaction: Bases can be prepared by neutralizing an acid with an appropriate alkaline substance. This involves combining an acid with a base to form water and a salt. For example, mixing hydrochloric acid (HCl) with sodium hydroxide (NaOH) results in the formation of water and sodium chloride (NaCl).

Ammonia gas dissolving in water: Ammonia gas (NH3) can dissolve in water to form ammonium hydroxide (NH4OH), which is a weak base.

Partial neutralization of a strong base with a weak acid: Mixing a strong base, such as sodium hydroxide (NaOH), with a weak acid, like acetic acid (CH3COOH), results in the formation of a base with a lesser degree of alkalinity.

These methods are utilized in laboratories, industries, and various applications where bases are required, such as in the production of cleaning agents, pharmaceuticals, and chemical reactions. Each method has its own advantages and specific applications depending on the desired base and its properties.

The question was incomplete. find the full content below:

What are the various methods involved in the preparation of bases?

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1. B, the energy associated with the motion of an object

2. C, 12.4 g/mL

3. C, 5

1) B) Kinetic energy is energy associated with the motion of an object.

2) B) Density equals mass divided by volume: 1.38 g/mL

3) C) There are 5 significant figures in 20.300

4) A) 80 is the atomic number for mercury on the periodic table.

5) E) The formula for copper (II) sulfate pentahydrate is CuSO4•5H2O

So in summary:

• Kinetic energy is the energy of a moving object due to its motion.

• Density is calculated by dividing an object's mass by its volume.

• Significant figures refer to the known precision of a measurement based on the digits reported.

• Atomic symbols represent elements on the periodic table.

• Chemical formulas use symbols of the elements to show the proportions of atoms in a compound.

Reaction 1 is nuclear fusion

Reaction 2 is nuclear fission

Nuclear fission is the process in which the nucleus of an atom is split into two or more smaller nuclei while Nuclear fusion, on the other hand, is the process in which two or more atomic nuclei combine to form a larger nucleus.

In reaction 1, there is the combination of hydrogen nuclei while in reaction 2 we have the breaking apart of a uranium nuclei. This is fission and fusion reactions respectively.

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0.67 moles of glucose are dissolved in 250 mL of a 2.67 M solution.

Thus, The name "glucose" is derived from the Greek word for "sweet." Your body uses this particular sort of sugar, which it obtains from the food you consume, as fuel.

It is referred to as blood glucose or blood sugar when it passes through your bloodstream to reach your cells. The hormone insulin transports glucose from the blood into the cells for use as fuel and storage. Blood glucose levels are higher in diabetics than in healthy people.

Either their cells don't react to insulin as insulin should or they don't have enough insulin to get it through. Long-term high blood glucose levels can harm your kidneys, eyes, and other organs.

Thus, 0.67 moles of glucose are dissolved in 250 mL of a 2.67 M solution.

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Answer:

no. of protons=8

no. of neutrons=8

no. of electrons=10

Explanation:

Answer:

the deep ocean

Explanation:

goog   le

The layer which is closest to the surface is least dense.

The ocean can be divided into three main layers:

The surface layer (also known as the epipelagic zone), which extends from the surface to about 200 meters deep and is the warmest and lightest layer.

The mesopelagic zone (or twilight zone), which extends from 200 to 1000 meters deep and is characterized by limited light and declining temperatures.

The bathypelagic zone (or midnight zone), which extends from 1000 to 4000 meters deep and is the coldest, darkest, and most pressure-filled layer.

Below the bathypelagic zone lies the abyssopelagic zone, which extends from 4000 to the ocean floor and is characterized by near-constant darkness and extremely cold temperatures.

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Each illustration shows a practical application of magnets to a problem.

They support documents on a refrigerator.

They are employed to seal the freezer's door and lid.

From a combination, they can remove magnetic objects.

With a magnet, all of the issues on the list can be resolved. We can use a magnet on the refrigerator to display a photo or holiday card. When the magnets inside the freezer are close to one another and are attracted to one another, the door is sealed shut and keeps our food cold. If metallic objects are present in a mixture, the magnet can be used to separate those items based on their magnetic characteristics. These are straightforward issues with a straightforward resolution: magnets!

Students are introduced to the main steps in the engineering design process during the presentation. They then read through a scenario in which middle school student Marisol struggles to keep their locker organized in discussion groups.

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Propanal and acetone are the IUPAC names for the chemical.

Propanal, commonly known as propanaldehyde, is an aldehyde with one double bond and one oxygen atom.

Acetone is a ketone compound. R2CO is the functional group of ketones.

Thus, Propanal and acetone are the IUPAC names for the chemical.

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Answer:

In the same phase

Explanation:

Because when you make a solution you have to keep them in the same phase or you will oof.