Which solution will exhibit the greatest increase in boiling point compared to plain water?
A 0.5 M AIN
B 2.0 M K2SO4
C 2.0 M C5H1206

The predicated cation anion distance for LiF, NaCL, KBr, RbI is 2.09Å, 2.83 Å, 3.34 Å, 3.72 Å respectively. The difference between the experimentally measured ion–ion distances and the ones predicted are 0.08 Å, 0.01 Å, 0.04 Å, 0.05 Å

The cation anion distance using the values of iconic radii are as follows:

i) LiF

the ionic radii of cation, Li⁺ = 0.90 Å

the ionic radii of anion, F⁻ = 1.19 Å

the predicated cation anion distance = 0.90Å + 1.19Å = 2.09Å,

ii) NaCl

the ionic radii of cation, Na⁺ = 1.16 Å

the ionic radii of anion, Cl⁻ = 1.67Å

the predicated cation anion distance = 1.16 Å + 1.67 Å = 2.83 Å,

iii) KBr

the ionic radii of cation, K⁺ = 1.52 Å

the ionic radii of anion, Br⁻ = 1.82 Å

the predicated cation anion distance = 1.52 Å + 1.82 Å = 3.34 Å,

iv) RbI

the ionic radii of cation, Rb⁺ = 1.66 Å

the ionic radii of anion, I⁻ = 2.06 Å

the predicated cation anion distance = 1.66 Å + 2.06 Å = 3.72 Å,

i)LiF:

Experimentally measured cation-anion distance = 2.01 Å,

predicted cation anion (LiF) distance = 2.09 Å

the difference = 2.09 Å - 2.01 Å = 0.08 Å

ii)NaCl

Experimentally measured cation-anion distance = 2.82 Å,

predicted cation anion (NaCL) distance = 2.83 Å

the difference = 2.83 Å - 2.82 Å = 0.01 Å

iii)KBr

Experimentally measured cation-anion distance = 3.30 Å,

predicted cation anion (KBr) distance = 3.34 Å

the difference = 3.34 Å - 3.30 Å = 0.04 Å

iv) RbI

Experimentally measured cation-anion distance = 3.67 Å,

predicted cation anion (RbI) distance = 3.72 Å

the difference = 3.72 Å - 3.67 Å = 0.05 Å

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Answer: NaCl

Explanation: salt

The product of an acid-base reaction in an iconic compound is Salt and water.

A neutralization reaction is a reaction in which an acid and a base react in an aqueous solution to produce salt and water.

When a strong acid and a strong base are mixed, they react according to the following net-ionic equation:

H₃O⁺(aq) + OH⁻(aq) → 2H₂O(l).

An acid-base reaction is a type of reaction that is also known as a neutralization reaction. The reaction between NaOH and HCL to form salt and water is represented by the chemical equation:

HCL(aq) + NaOH(aq)  → NaCl(aq) + H2O(I)

HCl is the acid that reacts with NaOH which is the base. The product formed from an acid-base reaction is known as salt. The salt formed from the sample reaction is NaCl.

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Following are the the effect of each solution on the red blood cells as per the given information :

a) crenation

b) neither

c) hemolysis

d) crenation

e) neither

The behavior of red blood cells (RBCs) in different solutions can be determined by comparing the tonicity of the solution to the tonicity of the RBC.

A hypertonic solution has a higher solute concentration than the cell and will cause water to move out of the cell, leading to crenation (shrinking) of the RBC.

A hypotonic solution has a lower solute concentration than the cell and will cause water to move into the cell, leading to hemolysis (bursting) of the RBC.

An isotonic solution has the same solute concentration as the cell and will not cause any net movement of water.

Using this given information, we can determine the effect of each solution on the RBCs:

a) 4.19% (m/v) NaCl solution is hypertonic to the RBC, so water will move out of the cell and cause crenation.

b) 1.78% (m/v) glucose solution is isotonic to the RBC, so it will not cause any crenation or hemolysis.

c) Distilled H2O is hypotonic to the RBC, so water will move into the cell and cause hemolysis.

d) 7.6% (m/v) glucose solution is hypertonic to the RBC, so water will move out of the cell and cause crenation.

e) 5.0% (m/v) glucose and 0.9% (m/v) NaCl solution is isotonic to the RBC, so it will not cause any crenation or hemolysis.

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When additional free energy from the surrounding environment is needed for a reaction to continue, it is said to be endergonic.

A chemical reaction or process is referred to as endergonic if free energy must be added for it to proceed. In an endergonic reaction, the reactants and products have different energy levels, and the reaction needs an external energy source to break through the activation energy barrier. This energy intake may originate from heat, light, or chemical energy sources. Endergonic reactions can't happen on their own; they need an ongoing supply of energy to function. A few endergonic processes are protein synthesis, photosynthesis, and the dissociation of ATP into ADP and phosphate. In living things, energonic processes play a significant role in metabolism and energy transfer.

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It will take 50 months to save enough money to buy the car. Always remember that the actual time may be longer if other factors such as taxes, fees, interest rates, and etc. are considered.

The time it takes to save enough money to buy a car can be determined by the cost of the car and the amount that saved each month for the car . If you the cost of car that you decided to buy , you can divide it by the amount saved each month to calculate the number of months required to save enough money.

For example, if a car costs $10,000 and you decide to save $200 per month, you would need to save for:

time = cost ÷ savings per month

time = $10,000 ÷ $200 per month

time = 50 months

As a result, it will take 50 months to save enough money to buy the car. However, always remember that the actual time may be longer if other factors such as taxes, fees, interest rates, and etc. are considered.

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Answer:

To calculate the volume of oxygen that will be required to burn 300 liters of ethane containing 5.8% non-combustible impurities, we need to determine the amount of pure ethane present.

Since the ethane contains 5.8% non-combustible impurities, 100 - 5.8 = 94.2% of the 300 liters of ethane is pure and can be burned.

The amount of pure ethane is 94.2% * 300 liters = 282.6 liters.

The stoichiometric equation for the complete combustion of ethane is:

C2H6 + 7O2 -> 4H2O + 6CO2

This equation tells us that for every molecule of ethane that is burned, 7 molecules of oxygen are required.

The volume of oxygen required for burning 282.6 liters of ethane is 282.6 liters * 7 = 1989.2 liters.

So, the volume of oxygen that will be required to burn 300 liters of ethane containing 5.8% non-combustible impurities is 1989.2 liters.

Assuming that the non-combustible impurities have no effect on the combustion of ethane, we can calculate the volume of oxygen required to burn 300 liters of ethane as follows:

Write the balanced chemical equation for the combustion of ethane:

C2H6 + 3.5 O2 -> 2 CO2 + 3 H2O

Determine the stoichiometry of the reaction, which tells us the molar ratio of ethane to oxygen required for complete combustion. From the balanced equation, we see that 1 mole of ethane reacts with 3.5 moles of oxygen.

PV = nRT

where P is the pressure of the gas, V is the volume of the gas, n is the number of moles of gas, R is the gas constant, and T is the temperature of the gas. Assuming standard temperature and pressure (STP), which is 1 atm and 0°C, we have:

n = PV/RT = (1 atm * 300 L)/(0.08206 Latm/molK * 273 K) = 12.5 moles of ethane

3.5 moles of O2 are required for 1 mole of ethane, so for 12.5 moles of ethane, we need:

12.5 moles of ethane * 3.5 moles of O2/mole of ethane = 43.75 moles of O2

V = nRT/P = (43.75 mol * 0.08206 Latm/molK * 273 K)/1 atm = 994.8 L of O2

Therefore, approximately 994.8 liters of oxygen will be spent on burning 300 liters of ethane containing 5.8% non-combustible impurities.

The total change in entropy is equal to the sum of heat transfer (in Joules) divided by the absolute temperature (in Kelvin) of the system. In equation form, the total change in entropy (ΔS) is equal to the sum of heat transfer (Q) divided by the absolute temperature (T):  ΔS = Q/T.

Entropy is the measure of randomness in a macroscopic system. It is equal with the ratio of heat absorbed in Joules (Q) and the temperature at which the heat is absorbed in Kelvin (T). If one wants the entropy to decrease, they must transfer the energy from outside the system.

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Antimony is an element having atomic number 51 and mass number 121.76 u. It has 51 number of proton and electrons.

Phosphorus is an element having the atomic number 15. It has 15 protons, electrons, and 16 neutrons.

The symbol of magnesium is Mg whereas the symbol of cobalt in Co.

The two subatomic particles present in the nucleus are the proton and neutron. They are collectively called nucleons. The proton has a positive charge, the electron has a negative charge whereas the neutron has no charge.

Protons and neutrons are accordingly called nucleons since they are in the nucleus of the atom. electrons are a type of subatomic speck with a negative charge. Protons are a type of subatomic particle with a positive charge.

Neutrons, further with protons, are subatomic particles found inside the nucleus of every atom. Neutrons have an impartial electric charge (neither negative nor positive) and have rather more mass than positively charged protons.

So we can conclude that Unlike protons and neutrons, which are detected inside the nucleus at the center of the atom, electrons are initiated outside the nucleus.

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N₂ + 3H₂ →2NH[tex]_3[/tex] is the balanced equation. A balanced equation is indeed a chemical reaction equation.

A balanced equation is indeed a chemical reaction equation in which the overall charge and the amount of atoms for every element inside the reaction are the same for both the products and reactants.

In plenty of other terms, the mass as well as charge across both endpoints of the reaction are balanced.

N₂ + H₂ →NH[tex]_3[/tex]

Number of atom of nitrogen on reactant side is 2 while on product side it is 1.

N₂ + H₂ →2NH[tex]_3[/tex]

Number of atom of hydrogen on reactant side is 2 while on product side it is 6.

N₂ + 3H₂ →2NH[tex]_3[/tex]

Therefore, N₂ + 3H₂ →2NH[tex]_3[/tex] is the balanced equation.

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The molecular weight of the sample of unknown gas that occupies 6.7L at 2 atm and has a temperature of 182.5K is 38.02g/mol.

The molecular weight or mass of a substance can be calculated from the number of moles in the substance. However, the number of moles of the substance can be calculated using Avogadro's equation as follows:

PV = nRT

Where;

2 × 6.7 = n × 0.0821 × 182.5

13.4 = 14.98n

n = 0.894 moles

molecular weight = 34g ÷ 0.894mol = 38.02g/mol

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a sample of trifluoroacetic acid, c2hf3o2, contains 88.9 88.9 g of oxygen, the mass of the trifluoroacetic acid sample is: 316.484 grams

The mass in grams of one mole of a chemical is its molar mass. A mole is the measurement of the number of things, such as atoms, molecules, and ions, that are present in a material. It provides you with the amount of grams per mole of a substance, to put it another way. The molar mass of a material is a bulk attribute rather than a molecular one. The fundamental units of matter are called atoms, and by joining atoms together, molecules are created. Chemists use the term "mole" because atoms, molecules, and other particles are all very tiny and require a large amount to even weigh them.

As we know,

1 mole of C₂HF₃O₂ contains 2 moles of oxygen

molar mass of C₂HF₃O₂ = 114.0 gm

atomic mass of 2 Oxygen = 32 gm

(114 / 32) = 3.56

grams of C₂HF₃O₂ = 88.9 x 3.56 = 316.484 grams

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The correct notation for the element silicon is "Si".
Silicon is a chemical element with the symbol Si and atomic number 14.

It is a metalloid, meaning that it has properties of both metals and nonmetals. Silicon is the second most abundant element on Earth, after oxygen, and it is a major component of rocks, sand, and minerals. It is also a crucial element in many technological applications, particularly in the electronics industry, where it is used to make semiconductors, computer chips, and solar cells.

Silicon has a crystalline structure and is a hard, brittle, and blue-grey material. It is not found in its pure form in nature, but is instead obtained from the purification of silicon dioxide, which is commonly found in sand and quartz. Silicon is also found in various minerals, such as mica, feldspar, and talc.
Silicon has many unique properties that make it useful in various applications. For example, it is a semiconductor, meaning that its electrical conductivity can be controlled by adding impurities to it in a process called doping. This property is essential for the production of electronic components, such as transistors and diodes.

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A water molecule typically stays in a living organism for a relatively short amount of time, typically a few minutes.

This is because water molecules are constantly being exchanged between different parts of the organism and the environment. Inside the organism, water molecules move in and out of cells, tissues and organs, and are also exchanged with the atmosphere. The process of exchanging water molecules between the organism and its environment is known as the water cycle. This cycle involves water molecules evaporating into the atmosphere, condensing, and then falling back down to Earth as rain or snow, where it is taken up by plants and animals, and then released back into the atmosphere. Water molecules are also exchanged between living organisms and their environment through diffusion, which is the movement of molecules from an area of higher concentration to an area of lower concentration. Therefore, even though a water molecule may stay in a living organism for a few minutes, it is constantly cycling through the organism and its environment.

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Answer:

The conditions that indicate an acidic solution at 25 °C are:

pH = 4.25

[H+] > 1.0 x 10^-7 M

[H+] > [OH-]

Explanation:

Lactose intolerant individuals digest sucrose without any problems because it produces digestive enzymes from sucrose.

Generally, lactose-intolerant individuals only lack the lactase enzyme but may still produce the enzyme for digesting sucrose. For example, a milk allergy is the result of an immune reaction to one or more of the components of milk, such as the protein casein.

Lactose intolerance in our body when body can't break down or digest lactose. Lactose is a type of sugar that is found in milk and milk products. Basically, lactose intolerance happens when your small intestine does not make enough of a digestive enzyme called lactase. Lactase helps in breaking down the lactose in food so our body can absorb it.

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Ozone is a secondary pollutant, a secondary pollutant is a type of air pollutant that is produced as a result of chemical reactions between primary pollutants in the atmosphere.

Unlike primary pollutants, which are directly emitted into the atmosphere, secondary pollutants are formed through a series of chemical reactions between primary pollutants and other atmospheric compounds. Ozone is a secondary pollutant that is formed when primary pollutants such as nitrogen oxides (NOx) and volatile organic compounds (VOCs) react with each other in the presence of sunlight. Ozone is considered to be a secondary pollutant because it is not directly emitted into the atmosphere but instead is formed through chemical reactions involving primary pollutants. It's important to note that although secondary pollutants are not directly emitted into the atmosphere, they can still have significant impacts on the environment and human health. Ozone, for example, is a major component of smog and can cause respiratory problems, as well as damage crops and other vegetation.

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Properties  of  Iron Rusting is Chemical;Gasoline Burning is Chemical;Solid Sulfur is Physical ;Shattering is Physical ;Lye Feeling Slippery is Physical.

Iron Rusting: Chemical - Iron rusting is a chemical reaction between iron, oxygen and water which results in the formation of hydrated iron oxide (Fe2O3).

Gasoline Burning: Chemical - Gasoline burning is a combustion reaction between gasoline and oxygen which results in the formation of carbon dioxide (CO2) and water (H2O).

Solid Sulfur: Physical - Solid sulfur is a physical property because it is a solid at room temperature and pressure.

Shattering: Physical - Shattering is a physical properties because it is a change in the physical structure of an object.

Lye Feeling Slippery: Physical - Lye feeling slippery is a physical property because it is a tactile sensation caused by the physical properties of lye.

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Complete question:Each of the following properties as being physical as being physical or chemical

iron rusting; gasoline burning ;solid sulfur ;shaltering and lye feeling slippery

435.0 grams of ammonium nitrate is equivalent to 5.436 moles of the compound.To determine how many moles of ammonium nitrate are in 435.0 grams of the compound, we need to first determine the molar mass of ammonium nitrate and then use that value to convert grams to moles.

The molecular formula of ammonium nitrate is NH4NO3, which consists of one nitrogen atom, four hydrogen atoms, one oxygen atom, and three nitrogen atoms. To calculate the molar mass of NH4NO3, we can add up the atomic masses of each of these elements, taking into account the number of atoms of each element in the molecule.

The atomic masses are: nitrogen (N) = 14.01 g/mol, hydrogen (H) = 1.008 g/mol, and oxygen (O) = 16.00 g/mol.

Molar mass of NH4NO3 = (1 x 14.01 g/mol) + (4 x 1.008 g/mol) + (3 x 16.00 g/mol)

Molar mass of NH4NO3 = 80.04 g/mol

To convert 435.0 grams of NH4NO3 to moles, we can use the formula:

moles = mass (in grams) / molar mass

moles of NH4NO3 = 435.0 g / 80.04 g/mol

moles of NH4NO3 = 5.436 mol

Therefore, 435.0 grams of ammonium nitrate is equivalent to 5.436 moles of the compound.

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Small nonpolar molecules, including O2 and CO2, are soluble withinside the lipid bilayer and consequently can effortlessly pass cellular membranes.

Small uncharged polar molecules, including H2O, can also diffuse via membranes, however large uncharged polar molecules, including glucose, cannot. Only the smallest molecules like water, carbon dioxide, and oxygen can freely diffuse throughout mobileular membranes. The shape of the lipid bilayer permits small, uncharged materials including oxygen and carbon dioxide, and hydrophobic molecules including lipids, to byskip via the mobileular membrane, down their awareness gradient, with the aid of using easy diffusion. The molecules that diffuse via the plasma membrane maximum quick are small, hydrophobic molecules including oxygen or carbon dioxide.

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The mass of carbon that has the same number of atoms as 195.4 grams of calcium is 68.6 grams. The final answer should be reported as 68.6, with three significant figures.

The mass of carbon that has the same number of atoms as 195.4 grams of calcium is 68.6 grams. This is because the atomic mass of calcium is 40.08 and the atomic mass of carbon is 12.011. The number of atoms in 195.4 grams of calcium is 4.87 x 10^24, and the number of atoms in 68.6 grams of carbon is also 4.87 x 10^24. The final answer should be reported as 68.6, with three significant figures. This is because the atomic mass of calcium and carbon are given to three significant figures, so the final answer should also be reported to three significant figures.

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The number of times a mole of Chromebooks will encircle the moon is  1.59 x 10¹⁶ times.

The number of times a mole of Chromebook will encircle the earth is determined by the length of a Chromebook.

The length of a standard-size school Chromebook is 11.6 inches.

One mole of Chromebook is 11.6 inches long or 0.2946 meters.

Avogadro's number is 6.022 x 10^23.

A mole of Chromebook will have a length =   0.2946 *  6.022 x 10^23.

So, the total length of a mole of Chromebook lined up end to end = 1.75 x 10^24 meters

The circumference of the moon is approximately 10,917 kilometers, which is equal to 10,917,000 meters.

The number of times a mole of Chromebooks will encircle the moon = 1.75 x 10^24/ 10,917,000

The number of times a mole of Chromebooks will encircle the moon =  1.59 x 10¹⁶ times.

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Molarity of solution is 1.91moles/L ,molaity of solution is 1.91mole/Kg and mass percent of solution is  99.8%

Molality is a proportion of the quantity of moles of solute in an answer comparing to 1 kg or 1000 g of dissolvable. This differentiations with the meaning of molarity which depends on a predetermined volume of arrangement.An ordinarily involved unit for molality in science is mol/kg. An answer of fixation 1 mol/kg is likewise once in a while signified as 1 molal. The unit mol/kg expects that molar mass be communicated in kg/mol, rather than the standard g/mol or kg/kmol.

We know that molarity=number of moles of solute/volume of solution in liters.

Now,number of moles of NaCl=112/molecular mass of NaCl.

Molecular mass of NaCl is 58.5g

So,number of moles of NaCl=112/58.5g=1.91moles

Now,molarity=number of moles of NaCl/volume of solution in liters

=>molarity=1.91/1=1.91moles/liters.

Now,molality=number of moles of NaCl/ amount of solvent in grams

Here,solvent is water so,amount of solvent in 1000gm

So,molality =1.91/1000g=1.91/1kg=1.91moles/Kg

Now,mass percent of solution =(mass of solute/total mass of solution) ×100

Mass of solute is 112g and total mass of solution is 112+1000+10g=1122g

Therefore,mass percent of solution =(112/1122)×100=99.98%

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The reaction between aqueous calcium chloride and aqueous lead(II) nitrate, which results in the formation of aqueous calcium nitrate and solid lead(II) chloride, has the following balanced net ionic equation: PbCl2(s) + Ca(NO3)2 Pb(NO3)2(aq) + CaCl2(aq) (aq).

A chemical equation known as a balanced net ionic equation only displays the species and ions that are actively participating in a reaction, leaving out any spectator ions. The spectator ions that appear on both the reactant and product sides of the chemical equation are cancelled out to produce the net ionic equation. To highlight the primary chemical process taking place and to make the equation simpler to understand and evaluate, a balanced net ionic equation is used. This can be very helpful when figuring out how a response works and forecasting how it will turn out.

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Answer:

okay

Explanation:

Coconut, palm, mangroves, water lily, water mint, are a few examples of plants whose seed are dispersed by the water.

3.85 grammes of a non-ionic unidentified substance are dissolved in 100.0 grammes of cyclohexane to create a solution. The solution's freezing point was 4.18 c. The molar mass is 186.

Kf of cyclohexane = 20.2 C0/m

ΔTf   =i* kf * m

   i= 1 for non-electrolyte

4.18  = 1*20.2*m

 m  = 4.18/20.2  = 0.207m

molality  = W*1000/G.M.Wt* weight of solvent

0.207   =  3.85*1000/G.M.Wt*100

G.M.Wt  = 3.85*1000/0.207*100  = 186g/mole

the molar mass of the unknown compound is 186

A substance's molar mass is its mass in grammes per mole of the chemical. A mole is 6.022 1023 molecules of any given chemical. A mole is a unit used to quantitatively quantify the size of the tiniest entities, much like how we use a standard number to compute many things, such as how a dozen equals twelve objects.

Everybody is interested in learning how many molecules are there in a given substance. In terms of size and mass, molecules and atoms are incredibly small. The weight of one sample mole is known as the molar mass. The molar mass is determined by adding the atomic masses (atomic weights) of each atom in the molecule.

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An electrovalent or ionic bond is a type of chemical bond that occurs between two atoms when one or more electrons are transferred from one atom to another. This results in the formation of two ions with opposite charges that are attracted to each other by electrostatic forces, forming an ionic bond.

Typically, an ionic bond occurs between a metal and a nonmetal. The metal atom loses one or more electrons to become a positively charged ion or cation, while the nonmetal atom gains one or more electrons to become a negatively charged ion or anion. For example, in the formation of sodium chloride (NaCl), sodium donates an electron to chlorine, forming Na+ and Cl- ions that are attracted to each other to form an ionic bond.

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510.17 centimetres cube is the volume of iron has a density of 7.86 gram per centimetres cube ( 1 centimetre cube = 1ml) and has a mass of 4.01 kg.

Density is the amount of mass of a substance present per volume of the cubic centimetre and it is the ratio of mass of a substance to the volume of the substance with a unit centimetre cube.

The iron has a density of 7.86 gram per centimetres cube and mass of 4.01 kg so,

mass in grams= [tex]\frac{4.01}{1000} = 0.0041g.\\Density= \frac{mass}{volume}[/tex]

Substituting the values in the equation, we get:-

volume= [tex]\frac{0.0041}{7.86} = 510.17 cm^{3} .[/tex]

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Lowers your stomach ph from 2.0 to 1.8. aspirin only absorbs in its protonated state and has a pka of 3.0,very small percentage of the aspirin will be absorbed  given a stomach ph of 1.8.

The first step is to determine the ratio of protonated to deprotonated aspirin in the acidic environment of the stomach. This can be done using the Henderson-Hasselbalch equation, which relates the pH, pKa, and the ratio of protonated to deprotonated forms of a weak acid:

pH = pKa + log([A-]/[HA])

[HA]/[A-] = 10^(pH - pKa) = 10^(1.8 - 3.0) = 0.014

Therefore, only a very small percentage of the aspirin will be absorbed in its protonated form, and the majority will remain in the deprotonated form and be excreted from the body. This may decrease the effectiveness of the aspirin as a pain reliever or anti-inflammatory agent.

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The ashes contain chemicals which have alkaline nature and the range of pH is from 10 to 12. Ashes are made up of atoms of different elements.

Ashes are defined as something which is left after burning or destroying some substances by fire. It is a greyish-white to black powder residue left when something is burned.

In the branch of analytical chemistry ashes are generally used to identify the mineral and metal content of the chemical samples. Ash is the non-liquid residue.

Ashes contain many atoms of the elements like carbon, calcium, magnesium, potassium, aluminium, phosphorous, etc.

Thus ashes are not remnants, it contains many atoms.

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