A sample of ideal gas occupies 208ml at 36. 2 degree celsius and 704 torr what is the volume at stp

The balanced chemical reaction for the synthesis of hydrogen with nitrogen is for the production of ammonia. This process is called Haber process. Option D is the correct answer.

The Haber process is a chemical process that is used to produce ammonia (NH₃) from nitrogen (N₂) and hydrogen (H₂) gases. The process was developed by German chemist Fritz Haber in 1909 and is also known as the Haber-Bosch process.

The process involves the reaction of nitrogen and hydrogen in the presence of an iron catalyst and high pressure and temperature. The reaction is exothermic, releasing a large amount of heat. The Haber process is represented by the given balanced equation:

N₂ + 3H₂ → 2NH₃

The ammonia produced by the Haber process is a key component in the production of fertilizers and is also used in the manufacture of a wide range of other products, including explosives, dyes, and cleaning agents.

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The layers of the sun can be seen in the image attached.

The sun is composed of several layers, including:

Core: The innermost layer of the sun where nuclear fusion takes place. The temperature in the core is about 15 million degrees Celsius.

Radiative Zone: This layer is between the core and the convection zone. Energy produced in the core is transported through the radiative zone by photons.

Convection Zone: The outermost layer of the sun's interior where hot gas rises and cooler gas sinks. The energy produced in the core is carried to the surface by convection.

Photosphere: The visible surface of the sun where most of the sun's light is emitted. The temperature of the photosphere is around 5,500 degrees Celsius.

Chromosphere: A thin layer above the photosphere that emits a reddish glow during solar eclipses. The temperature of the chromosphere ranges from 4,000 to 10,000 degrees Celsius.

Corona: The outermost layer of the sun's atmosphere, extending millions of kilometers into space. The temperature of the corona is extremely high, around 1 to 3 million degrees Celsius.

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Answer : The molar mass of magnesium is 24.305 g/mol

To calculate the mass of magnesium that participated in the chemical reaction, you need to know the number of moles of magnesium and the molar mass of magnesium. The molar mass of magnesium is 24.305 g/mol. Multiply the number of moles of magnesium by the molar mass of magnesium to calculate the mass of magnesium that participated in the chemical reaction.  

For example, if you were given that the number of moles of magnesium is 0.25 moles, then you can calculate the mass of magnesium by multiplying 0.25 moles by 24.305 g/mol. This gives a result of 6.076 g of magnesium that participated in the chemical reaction.

To sum up, calculating the mass of magnesium that participated in the chemical reaction requires knowing the number of moles of magnesium and the molar mass of magnesium. The molar mass of magnesium is 24.305 g/mol, and you can calculate the mass of magnesium that participated in the chemical reaction by multiplying the number of moles of magnesium by the molar mass of magnesium.

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One common reaction that produces carbon dioxide in organic chemistry workup is the reaction between sodium bicarbonate (NaHCO₃) and an acid.

When an acidic solution is added to a mixture containing sodium bicarbonate, carbon dioxide gas is produced as a result of the following reaction:

NaHCO₃ + H+ → Na+ + CO₂ + H₂O

The carbon dioxide gas will then bubble out of the mixture and can be collected in a separate container or released into the air.

In a separatory funnel workup, this reaction may be used to remove excess acid from an organic reaction mixture. The mixture is first extracted with a suitable organic solvent, and then an aqueous solution of sodium bicarbonate is added to the separatory funnel. The acidic components in the mixture will react with the sodium bicarbonate to produce carbon dioxide, which will bubble out of the mixture and can be released through the stopcock

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In order to make a solution that is 1.5ppm in fluoride ion using sodium fluoride (NaF), 750L of water needs to be added to 0.22g of NaF.

Mass of NaF (g) = Concentration of F (ppm) x Volume of Water (L) / 1,000,000.

NaF mass = 1.5ppm x 750L / 1,000,000.

Since the atomic weight of NaF is 41.99, 0.22g is equivalent to 0.00518mol NaF.

The molarity (M) of the solution,

Molarity (M) = Moles of Solute (mol) / Volume of Solution (L)

Molarity 0.00518mol / 750L = 0.000068M.

Therefore, 0.22g of NaF should be added to 750L of water to make a solution that is 1.5ppm in fluoride ion.

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0.1503 grams is the approximate mass of the CCl4 sample.

We can use Avogadro's number to solve this problem:

1 mole of any substance contains 6.02 x 10^23 particles

Therefore, the number of moles of CCl4 in the sample is:

5.90 x 10^20 particles / 6.02 x 10^23 particles per mole = 0.000978 moles

The molar mass of CCl4 is approximately 153.82 g/mol. Therefore, the mass of the sample is:

0.000978 moles * 153.82 g/mol = 0.1503 g

Therefore, the mass of the sample of CCl4 with 5.90 x 10^20 particles is approximately 0.1503 grams.

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At STP, one mole (6.02 × [tex]10^{23}[/tex] representative particles) of any gas occupies a volume of 22.4 L . A mole of any gas occupies 22.4 L at standard temperature and pressure (0°C and 1 atm).

A.

i had this question and i got it right

Answer: If a sample has 50 atoms of 87Rb and 50 atoms of Sr, it has gone through the equivalent of 77.7 billion years in half-lives.

In order to answer this question, we need to know the half-lives of both 87Rb and Sr. The half-life of 87Rb is 48.8 billion years and the half-life of Sr is 28.9 billion years.

Therefore, the sample has gone through the equivalent of (50/50) x 48.8 billion years, or 48.8 billion years, of 87Rb's half-life.

It has also gone through (50/50) x 28.9 billion years, or 28.9 billion years, of Sr's half-life. In total, the sample has gone through the equivalent of 77.7 billion years in half-lives.

In summary, if a sample has 50 atoms of 87Rb and 50 atoms of Sr, it has gone through the equivalent of 77.7 billion years in half-lives.


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In this laboratory, the following three acids are used: Hydrochloric acid (HCl) with a formula of HCl, Sulfuric acid (H2SO4) with a formula of H2SO4, and Nitric acid (HNO3) with a formula of HNO3.Acids are known to be oxidizing agents, meaning that they are capable of accepting electrons to reduce other species.

Strong acids are those that completely dissociate into their constituent ions in aqueous solution. Hydrochloric acid, sulfuric acid, and nitric acid are all strong acids.

Here are the acids used during this laboratory: Acid Formula Name Strong or weak? Oxidizing or not?  

1. (HCL)Hydrochloric acid Strong (Yes) 2. (H2SO4) Sulfuric acid Strong (Yes) 3. (HNO3) Nitric acid Strong (Yes) Acids are used in various laboratory experiments due to their unique chemical and physical properties.

They are used as reactants in many chemical reactions, as solvents for various compounds, and as catalysts for several reactions, among other applications.

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The minimum photon energy required to eject an electron from the ground state of a doubly ionized lithium is 8.62 eV.

This is due to the fact that ionization energy of doubly ionized lithium is 8.62 eV, which means that the minimum amount of energy required to remove an electron from the atom is 8.62 eV.

This is the amount of energy that the incoming photon must have in order to eject an electron from the ground state of a doubly ionized lithium atom.

In other words, the photon must possess at least 8.62 eV of energy to remove the electron from the atom.

This is why a photon with energy of 8.62 eV or more is required to eject an electron from the ground state of a doubly ionized lithium atom.

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The metal hydride reducing agent used in this experiment is sodium borohydride (NaBH₄).

If catalytic hydrogenation with H2 were used, the product would be an alkane with a double bond reduced to a single bond.

Sodium borohydride (NaBH₄) is a strong reducing agent capable of reducing aldehydes and ketones to their corresponding alcohols. It works by donating protons to the carbon-oxygen double bond, leading to the formation of an alkoxide intermediate.

The alkoxide is then reduced to the corresponding alcohol by hydrogen transfer from the hydride ion. Catalytic hydrogenation with H₂ will reduce the double bond to a single bond, producing an alkane product.

This process is used to produce a range of organic products in the laboratory, and is a very useful tool in organic synthesis.

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The number of mole present in 87 grams of potassium bromide, KBr is 0.731 mole

We'll begin our calculation by obtaining the molar mass of potassium bromide, KBr. Details below:

Molar mass of potassium bromide, KBr = K + Br

Molar mass of potassium bromide, KBr = 39 + 80

Molar mass of potassium bromide, KBr = 119 g/ mol

Finally, we shall determine the number of mole present. Details below:

Mole = mass / molar mass

Mole of potassium bromide, KBr = 87/ 119

Mole of potassium bromide, KBr = 0.731 mole

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Complete question:

How many moles are in 87g of potassium bromide?

Answer:  The edge length of the unit cell for tungsten is 0.548 nm.

Tungsten has a radius of 141 pm and crystallizes in a body-centered cubic structure.

The edge length of the unit cell can be calculated as follows:

Edge length of a body-centered cubic unit cell

(a) = √3 × 4r/3, where r is the radius of the atom.

Given, tungsten has a radius of 141 pm.

Thus, a = √3 × 4 × 141 pm / 3

= √3 × 564 pm / 3

= 1.417 × 10^-7 m / pm × √3 × 564

= 0.316 nm × 1.732

= 0.548 nm

The edge length of the unit cell for tungsten is 0.548 nm.

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Chlorine (Cl) is a nonmetal, meaning it has the tendency to gain electrons to achieve the electron configuration of a noble gas. The noble gas electron configuration of the nearest noble gas, argon (Ar), is 1s2 2s2 2p6 3s2 3p6, with a total of 18 electrons.

Chlorine has 7 valence electrons, meaning it needs 1 more electron to achieve a stable noble gas electron configuration. Therefore, chlorine wants to gain 1 electron to achieve a stable noble gas configuration.

In terms of bonding, chlorine can either gain 1 electron to form an anion with a 1- charge or it can share electrons with another atom to form a covalent bond. Chlorine most commonly forms a single covalent bond with another atom, such as hydrogen, to form hydrogen chloride (HCl). In this case, both atoms share electrons to form a stable molecule.

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The atomic weight of the element is 1.79 × 10-22 grams

The atomic weight of an element is the average mass of its atoms relative to the mass of an atom of carbon-12, which is defined as 12.0000 atomic mass units (amu).

Since the element has only one stable isotope, its atomic weight is equal to the mass of a single atom of the element in amu.

Converting the given mass of a single atom from grams to amu:

1.79 x 10^-22 g x (1 amu / 1.66054 x 10^-24 g) = 1.079 amu

Therefore, the atomic weight of the element is 1.079 amu.

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The substances that is going to end up with the highest temperature in the list is water.

Heat capacity is the amount of heat energy required to raise the temperature of a substance by one degree Celsius or one Kelvin. It is a measure of the substance's ability to store heat. The greater the heat capacity of a substance, the more heat energy it can absorb before its temperature rises significantly.

When heat is added to a substance, the temperature of the substance increases. The amount by which the temperature increases depends on the amount of heat added and the heat capacity of the substance.

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The nucleotide sequence of an organism's genome, that of a virus, extrachromosomal DNA, or other genetic components can change permanently in a process known as mutation.

Any alteration to a cell's DNA sequence. Mistakes in cell division can result in mutations, as can exposure to environmental DNA-damaging substances.

Gene mutations can be divided into two categories: small-scale mutations and large-scale mutations.

Appearance Alteration is the capacity to modify another person's skin, hair, and vocal chords (also known as adaptive appearance manifestation).

The genes that encode our pigment's sensitivity to color can multiply themselves throughout time. The additional copies are susceptible to mutations that change the range of wavelengths they can absorb.

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The student obtained an optically active product after exposing r-1-bromo-2-propanol to sodium hydroxide. The proton NMR of the product is also provided.

The structure of the compound that the student isolated is:CH3 – CH (OH) – CH2 – Br

In the given compound r-1-bromo-2-propanol, the bromine atom is attached to the first carbon atom. When this compound is treated with sodium hydroxide, the hydroxide ion attacks the carbon atom attached to the bromine atom and forms a negatively charged oxygen atom.This negatively charged oxygen atom further attracts the proton of the adjacent carbon atom (second carbon atom). After the transfer of a proton, the negatively charged oxygen atom gets neutralized and an alkoxide ion is formed. This alkoxide ion further attacks the third carbon atom and the compound is formed.In the compound obtained, there is no plane of symmetry or center of symmetry. This makes the compound optically active.

Further, the proton NMR shows the presence of a singlet at chemical shift 1.1 ppm due to the presence of three equivalent methyl groups. The presence of a broad singlet at chemical shift 3.7 ppm is due to the presence of –OH group. The singlet at chemical shift 4.2 ppm is due to the presence of –CH2 group.The structure of the compound that the student isolated is CH3 – CH (OH) – CH2 – Br.

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Answer:

To convert molecules of C2H2 to grams, we need to use the molar mass of C2H2, which is 26.04 g/mol.

First, we need to calculate the number of moles in 7.41 x 10^24 molecules of C2H2:

7.41 x 10^24 molecules / 6.022 x 10^23 molecules/mol = 12.31 mol

Then, we can use the formula:

mass = moles x molar mass

mass = 12.31 mol x 26.04 g/mol = 320.4624 g

Therefore, 7.41 x 10^24 molecules of C2H2 is equivalent to 320.4624 grams.

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The limiting reactant is Sulphur,  according to the chemical reaction given in the question.

Let's take the balanced chemical reaction in the question

2S + 3O₂ + 4NaOH → 2Na₂SO₄ + 2H₂O

Here,

We have to identify the limiting reactant when 2.0 g of sulfur reacts with 3.0 g of oxygen and 4.0 g of sodium hydroxide.

First, we need to calculate the moles of each substance, and then we can find out the limiting reactant.

Let's do it one by one.

Mole of sulphur (S) = 2 g/32 g/mol = 0.0625 moles

Moles of Oxygen (O2) = 3 g/32 g/mol = 0.09375 moles

Moles of Sodium Hydroxide(NaOH) = 4g/40g/mol = 0.1 moles

Now, we have to compare the number of moles of each substance to find out the limiting reactant.

Here we can see that the number of moles of sulphur (S) is the least among all the reactants, i.e., 0.0625 moles.

Hence, the limiting reactant is sulfur (S).

Therefore, the correct answer is "sulphur."

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The process of turning metallic slabs or ingots into useful shapes is known as "hot working" or "hot forming".

Hot working is a metalworking process where metals are shaped when they are above their recrystallization temperature. This process is usually done after a metal has been solidified from its molten state. It involves the application of force to change the shape of the metal, usually by compressing, drawing, forging, or extruding.

The temperature used during hot working can vary depending on the type of metal, but typically it must be at least half of the metal's melting point temperature. By hot working, the metal can be formed into various shapes, including thin sheets, rods, and tubes.

In the hot working process, the metal is heated until it reaches the recrystallization temperature and then deformed by mechanical means, such as hammering or rolling. The metal is then cooled down, either slowly or rapidly, depending on the required properties of the metal. Rapid cooling will increase the strength of the metal but also make it brittle, while slower cooling will give the metal more ductility. During cooling, some of the metal grains are recrystallized, leading to a homogeneous microstructure.

Hot working is an important process for many metal fabrication industries, including automotive, aerospace, and construction. It is used to create metal parts and components with superior strength and ductility, as well as for creating metal artworks or sculptures. The process is also widely used in metal recycling, where it is used to reshape and reform metals from their original form. Hot working can be a complex process and is typically done by highly skilled metalworkers.

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When animals consume food containing large polymeric molecules, such as proteins, carbohydrates, and nucleic acids, their digestive system breaks down these molecules into smaller components that can be absorbed and utilized by the body.

Mechanical digestion occurs in the mouth and stomach, where food is broken down into smaller pieces through chewing and mixing with digestive enzymes and acids. Chemical digestion occurs primarily in the small intestine, where enzymes and other compounds break down complex molecules into smaller components.

Proteins, for example, are broken down into their constituent amino acids by proteases, while carbohydrates are broken down into simple sugars like glucose and fructose by amylases. Nucleic acids are broken down into nucleotides by nucleases.

Once these molecules are broken down, they are absorbed into the bloodstream through the walls of the small intestine and transported to the liver, where they are further metabolized and distributed to other parts of the body as needed. The body then uses these molecules to build new proteins, carbohydrates, and nucleic acids or to generate energy through cellular respiration. Any excess molecules are typically stored for later use or eliminated from the body as waste.

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--The complete question is, What happens to large polymeric molecules in food once they are eaten by animals?--

The reaction that best explains why adding a few drops of 1.0 M HCl(aq) does not significantly change the pH of the solution is HNO₂aq) + H₂O(l) ⇌ H₃O+(aq) + NO₂-(aq)

When HNO₂ and KNO₂ are mixed, they undergo a dissociation reaction in which HNO₂ donates a proton to water and forms H₃O+ and NO₂-. This reaction produces a weakly acidic solution with a pH of approximately 3. Adding a few drops of 1.0 M HCl to the solution would result in the protonation of NO₂- ions, forming HNO₂, which would lower the pH of the solution.

However, since HNO₂ is already present in the solution, the added HCl would not significantly change the pH of the solution. This is because the additional HNO₂ formed from the reaction of HCl with NO₂- would be in equilibrium with the original HNO₂ in the solution, and the concentration of HNO₂ would not significantly change.

Therefore, the equilibrium equation for the dissociation of HNO₂ in water can best explain why adding a few drops of HCl does not significantly change the pH of the solution.

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A. 80°C to 20°C - 16.9g KNO3 per 100g of water

B. 60°C to 40°C - 14.7g KNO3 per 100g of water.

C. 50°C to 30°C - 12.6g KNO3 per 100g of water

D. 80°C to 0°C - 32.2g KNO3 per 100g of water.

E. 50°C to 10°C - 21.9g KNO3 per 100g of water

The amount of potassium nitrate that can be crystallized from a saturated solution is dependent on the temperature. As the temperature decreases, the amount of KNO3 that can be crystallized increases.

When the temperature drops from 80°C to 20°C, 16.9g of KNO3 can be crystallized from a saturated solution per 100g of water. This is the lowest amount of KNO3 that can be crystallized from a saturated solution, as the temperature cannot be lower than this.

The amount of KNO3 increases as the temperature drops from 60°C to 40°C, with 14.7g of KNO3 crystallizing per 100g of water. This pattern continues, with 12.6g of KNO3 crystallizing from a saturated solution when the temperature drops from 50°C to 30°C.

When the temperature drops from 80°C to 0°C, the highest amount of KNO3 can be crystallized from a saturated solution, with 32.2

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Answer:

610 k because is the hollwsphere is the gasis and 1 kpa of helium

The number of moles in 12.25 kg of ammonium chloride would be 229.02 moles.

To calculate the number of moles of ammonium chloride (NH4Cl) in 12.25 kg, we need to use the formula:

Number of moles = Mass / Molar mass

First, we need to calculate the molar mass of NH4Cl, which is the sum of the atomic masses of all the atoms in one mole of the compound:

Molar mass of NH4Cl = (1 x atomic mass of N) + (4 x atomic mass of H) + (1 x atomic mass of Cl)

= (1 x 14.01) + (4 x 1.01) + (1 x 35.45)

= 53.49 g/mol (rounded to two decimal places)

Now we can use the formula to calculate the number of moles:

Number of moles = Mass / Molar mass

= 12,250 g / 53.49 g/mol

= 229.02 mol (rounded to two decimal places)

Therefore, there are 229.02 moles of ammonium chloride in 12.25 kg of the compound.

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The difference between ruby and corundum is caused by impurities in the mineral.

Ruby is a variety of the mineral corundum, where corundum itself is composed of aluminum oxide. The addition of trace elements such as chromium, titanium, and iron can turn a corundum into ruby.

The different impurities give the ruby its characteristic red color, while corundum remains colorless.

Ruby and corundum form in different conditions. Ruby typically requires higher pressure and temperatures than corundum.

The pressure of the Earth’s mantle helps the aluminum oxide and trace elements combine to form ruby, while corundum forms at lower pressures. Corundum can also form at higher temperatures and pressures, but this is less common.

Finally, the structure of the two minerals is different. Ruby has a trigonal structure, while corundum has an orthorhombic structure. The different impurities, pressures, and temperatures combine to create the two distinct minerals.

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