what will the location of the hydrogens on carbon a be relative to the hydrogens on carbon b in a 1h nmr spectrum of the following compound?

The process of determining the concentration of a solution by slowly adding a known solution to it using a buret is commonly referred to as titration.

Titration is a laboratory technique that is widely used to determine the concentration of a solution. In this method, a buret is filled with a known solution of a specific concentration, often referred to as the titrant. A second solution, called the analyte, is placed in a flask or beaker and an indicator is added to it. The indicator is a chemical substance that changes color or exhibits some other type of visual change when it reacts with the titrant.

The buret is then used to slowly add the titrant to the analyte. The point at which the reaction between the titrant and analyte is complete is indicated by the change in the appearance of the indicator. This change marks the end point of the titration and is used to determine the concentration of the analyte.

Titrations can be performed for a variety of purposes, including determining the amount of an unknown substance in a sample, determining the purity of a substance, and determining the reaction rate between two substances. The technique is particularly useful because it is precise and accurate, and it can be used to determine the concentration of a wide range of substances, including acids, bases, and redox compounds.

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The number of moles of 33 g of sodium chloride is 0.564 . The volume of ocean water considered is 1 L. Then the molarity of the solution is 0.564 M.

Molarity of a solution is a common term used to express the concentration of a solution. It is the the ratio of number of moles of the solute to the volume of solution in liters.

Given that 1 liter of ocean water contains 33 g of NaCl.

molar mass of sodium chloride = 58.5 g/mol.

no.of moles in 33 g of NaCl = 58.5 /33  = 0.564 moles.

volume of ocean water = 1 L

molarity = no.of moles of solute/volume of solution in L.

= 0.564 mole/ 1 l = 0.564 M.

Therefore, the molarity of the salt in sea water is 0.564 M.

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The volumetric flask is used in titration, a process used to determine the unknown concentration of a known solution

The volumetric flask is a glassware piece of laboratory equipment that is used to make precise volume measurements of a liquid. It is also known as a 'measuring flask', and consists of a tapered conical body with a long neck and a flat bottom. The bottom of the flask is usually marked with a calibration mark, which can be used to determine the exact volume of the liquid inside.  The volumetric flask is used in titration, a process used to determine the unknown concentration of a known solution. A burette, filled with the known solution, is used to slowly add the solution to the volumetric flask, containing the unknown solution. As the burette is slowly releasing the solution, a color change will take place as the concentration of the unknown solution is reached. A full reading of the volume in the volumetric flask is then taken, which can be used to calculate the concentration of the unknown solution.

The volumetric flask is also used in general laboratory tasks such as diluting solutions and transferring liquids. The accuracy of the volumetric flask is based on its calibration mark and the accuracy of the liquid inside. It is important to properly clean and store the volumetric flask to ensure accuracy in future measurements.

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In Cell A, there would be 8 chromosomes present at the end of the meiosis process.

Meiosis is a type of cell division that produces four daughter cells from one parent cell. It is a type of nuclear division that occurs in eukaryotic cells and is the process by which gametes (sex cells) are formed. The process of meiosis is composed of two separate divisions called meiosis I and meiosis II. During meiosis I, homologous chromosomes (which contain two copies of each gene) pair up, exchange genetic material, and then separate. This process is called crossing over and it creates genetic diversity. During meiosis II, the sister chromatids (copies of each chromosome) separate and move to opposite ends of the cell.

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Since the dipole moment of gaseous AgCl is 11.5 D and the ionic character of AgCl is 78.1%, we can assume that the magnitude of the partial charge is 0.781.

Magnitude is a measure of the size, strength, or intensity of something. It can refer to physical objects, such as earthquakes, or abstract concepts, such as numbers or emotions. In physical sciences, magnitude is typically used to measure an object's size, intensity, or speed. In mathematics, magnitude is often used to indicate the size of a number, usually expressed as the absolute value. Magnitude is also used to describe the size of an emotion or feeling, such as happiness or sadness.

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(C.) ch3ch2ch2ch2ch2oh. The option C compound, ch3ch2ch2ch2ch2oh, contains the most -OH groups of the compounds listed, making it the most soluble in water.

The quantity of hydroxyl (-OH) groups a molecule has typically affects how soluble it is in water. The compound in option C, ch3ch2ch2ch2ch2oh, contains the most -OH groups out of all the alternatives, making it the most water soluble.

In comparison to option C, the other two, A and B, are less soluble in water because they contain fewer -OH groups in their molecular structure. Option D, which states that all of these chemicals are equally soluble in water, is false because the molecular structure of an alcohol affects how soluble it is in water, and not all alcohols have the same molecular structure.

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The work done during the compression of the gas is 615 J.To calculate the work done during the compression of the gas, we can use the formula:

work = -Pext x ΔV

where Pext is the external pressure applied to the gas, and ΔV is the change in volume of the gas.

We first need to convert the volume units from liters to cubic meters, and the pressure units from torr to atmospheres (atm):

8.4 L = 0.0084 m^3

2.17 L = 0.00217 m^3

736 torr = 0.971 atm

Now we can calculate the work done:

work = -Pext x ΔV

work = -0.971 atm x (0.00217 m^3 - 0.0084 m^3)

work = -0.971 atm x (-0.00623 m^3)

work = 0.00604 atm·m^3

Finally, we need to convert the units of work from atm·m^3 to joules (J). 1 atm L is equivalent to 101.325 J, so:

work = 0.00604 atm·m^3 x (101.325 J/atm·L) x (1000 L/m^3)

work = 615 J

Therefore, the work done during the compression of the gas is 615 J.

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The balanced reaction equation is; NH4Cl (aq) → NH3 (aq) + HCl (aq)

The temperature was increasing by 1 degree.

Balancing a chemical reaction equation involves making sure that the same number of each type of atom appears on both the reactant and product side of the equation. This is necessary because the law of conservation of mass states that the total amount of matter in a system must remain constant.

To balance a chemical reaction equation, follow these steps:

Write the unbalanced equation

Count the number of atoms of each element on both sides of the equation.

Add coefficients (numbers in front of molecules) to the reactants or products to make the number of atoms of each element the same on both sides of the equation.

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we cannot determine the exact value of ∆G, but we can say that it decreased as a result of the increase in entropy

The Gibbs free energy change (∆G) is related to the enthalpy change (∆H) and the entropy change (∆S) through the equation:

∆G = ∆H - T∆S

where T is the temperature in Kelvin.

In this case, we know that ∆H = 10 units and ∆S = 12 units. However, we do not know the temperature, so we cannot calculate ∆G exactly.

We can, however, make some general statements about the sign and magnitude of ∆G. Since ∆H is positive (indicating an endothermic reaction) and ∆S is positive (indicating an increase in disorder), the sign of ∆G will depend on the temperature. At low temperatures, the positive ∆H term will dominate, and ∆G will be positive. At high temperatures, the negative T∆S term will dominate, and ∆G will be negative. At some intermediate temperature, ∆G will be zero, and the reaction will be at equilibrium.

Therefore, we cannot determine the exact value of ∆G, but we can say that it decreased as a result of the increase in entropy.

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The diagrams known as Lewis structures, often referred to as Lewis dot formulas, depict the interactions between the atoms in a molecule as well as any lone pairs of electrons that may be present.



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To calculate the value for the molecular weight of your unknown been affected if a small quantity of the unknown stuck to the metal stirring rod and failed to dissolve in the benzophenone following is the process:

Your mass of counted solute added to the detergent would be lower than the recorded value performing in a lower temperature change grounded on mass of solute. A lower temperature change will affect in a lower number of calculated intelligencers of solute present. This will give a advanced molar mass for your unknown compared to the real molar mass( lower number of intelligencers divided into the mass of solute gives a larger molar mass).

These two scenarios are predicated on a solute-solvent mixture's lower freezing-point (or melting-point) as compared to pure solvent. A nonelectrolyte solute's equation is:

ΔTf = Kfm

Kf is the solvent's specific molal freezing-point depression constant, and m is the molality of the solution mixture.

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65% of the reactant will be consumed in 23.3 seconds. If a first-order reaction has a rate constant of 0.0450 s'.

First order rate law is given by,

A = A0 × e-kt

Given,

A0 = Initial concentration=100 M

A = Final concentration=35 M (65% is consumed means 35% is the remaining compound)

K = Rate constant = 0.0450 s-1​​​​​​

A = A0×e-kt​​​​​​

=>35 = 100 × e-0.0450 * t

=>e-0.0450*t = 0.35

=> - 0.0450*t = ln(0.35)

=> -0.0450*t = -1.05

=> t = 23.3 sec

So, 23.3 seconds will be required to consume 65% of the reactant.

When a reaction's pace and reactant concentration are inversely correlated, the process is known as a first-order reaction. To put it another way, the response rate doubles when the concentration double. One or two reactants can be present in a first-order reaction, as in the case of the decomposition process.

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Temperature changes is the criteria which is used to measure the bromination rate of the hydrocarbons.

The concentrations of the chemical species involved in the bromination have no effect on the rate constant. However, it is affected by other factors such as temperature or ionic strength, for example, k. (T). The rate constant's units are determined by the overall reaction order.

Bromine is a reddish-brown colour, while the rest of the reactants and products are clear. Thus, the reaction rate can be conveniently measured by using a spectrophotometer to monitor the concentration of bromine.
It is predicted that the presence of an alkyl or alkoxy substituent will increase bromination rates (relative to benzene) and direct bromination to the para and ortho positions of alkyl- and alkoxybenzenes.
Because the rate-determining step for bromination is endothermic, it is slower than chlorination. In general, bromination and chlorination are both exothermic reactions.
For 1°;2°;3° hydrogens, the relative rate of radical bromination is 1; 82; 1640. Make a list of all the monobrominated products that could result from the radical bromination of the compounds.

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Global warming factor is not a reason for the ozone hole formation in the earth

The Earth is surrounded by greenhouse gases, allowing heat to pass through to the surface but not back out into space. Water vapour (H2O), carbon dioxide (CO2), methane (CH4), CFC-HCF-PHC (also known as F gases, fluorinated hydrocarbons), nitrous oxide (N2O), and sulphur hexafluoride are examples of greenhouse gases (SF6).

The phrase "greenhouse effect" refers to the planet Global warming up as a result of a disruption in the energy balance between the quantity of radiation the Earth receives from the Sun and radiates into space. This impact is caused by an increase in the amount of radiation that is absorbed by the atmosphere and cannot be released into space from the surface of the Earth.

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It's worth noting that the exact composition of the air can vary depending on the location and the time of year, but these substances are the most abundant gases found in the Earth's atmosphere.

The substances in the air you breathe are typically ranked in terms of their abundance as follows:

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From the given information, the formula mass of calcium chloride is 110.98 g/mol, rounded to five significant figures.

To calculate the formula mass of calcium chloride, we need to determine the atomic mass of each element in the compound and then sum them up based on the chemical formula:

Atomic mass of Ca = 40.078 g/mol

Atomic mass of Cl = 35.45 g/mol

The formula mass of calcium chloride (CaCl₂) can be calculated as follows:

Formula mass = (atomic mass of Ca) + 2 x (atomic mass of Cl)

Formula mass = 40.078 g/mol + 2 x 35.45 g/mol

Formula mass = 110.98 g/mol

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Answer:

physics teacher walks 4 meters East, 2 meters South, 4 meters West, and finally 2 meters North. Even though the physics teacher has walked a total distance of 12 meters, her displacement is 0 meters. During the course of her motion, she has "covered 12 meters of ground" (distance = 12 m).

The physics instructor has walked a total of 8 metres. Applying the Pythagorean Theorem will reveal this. According to the theorem, the square of the hypotenuse, the longest side of a right triangle, is equal to the sum of the squares of the other two sides.

The overall distance travelled in this instance is the hypotenuse, and the lengths travelled in the east-west and north-south directions are the other two sides. Eight metres, or 4 metres East + 4 metres West, have been covered in an east-west direction.

A total of 8 metres, or 2 metres South + 2 metres North, have been covered in a north-south direction. The total distance travelled is therefore equal to the square root of 8 metres is equal to 8 squared times 8 squared.

By dividing the overall distance travelled into its component parts, this may also be established. The sum of the distances in each direction is the total distance travelled. In this instance, the total distance travelled is 12 metres, or 4 metres east, 2 metres south, 4 metres west, and 2 metres north. The overall distance travelled is 12 metres minus the 8 metres in the East-West direction, which equals 8 metres.

However, because the instructor travelled 4 metres East and 4 metres West, the total distance travelled is really 8 metres.  

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 A chemical reaction that prefers one potential structural isomer over one or more other structural isomers is accurately referred to be stereoselective.

A stereoselective reaction favours the creation of a particular stereoisomer over other potential stereoisomers while retaining the stereochemistry of the starting material in the final product. The composition of the reagents and the reaction conditions are only two examples of the many variables that might affect selectivity. A chiral centre or a molecule with the capacity to produce one is referred to as stereogenic. A reaction is referred described as being "regioselective" if one of a molecule's reaction sites is favoured over other reaction sites. In organic chemistry, the word "regiogenic" is not used.

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The size and mass of an atom are determined by the number of protons, neutrons, and electrons it contains and can increase or reduce size & mass.

Protons and neutrons are the subatomic particles responsible for most of the mass of an atom. Protons have a mass of approximately 1 atomic mass unit (amu), while neutrons have a slightly larger mass of approximately 1.008 amu. Electrons, on the other hand, have a much smaller mass of approximately 0.0005 amu.

The number of protons and neutrons in an atom determines its atomic mass, which is the sum of the masses of all its protons and neutrons. The number of electrons determines the chemical properties of an atom and how it interacts with other atoms.

In summary, subatomic particles, such as protons, neutrons, and electrons, do not have the ability to increase or decrease the size and mass of an atom. Rather, they determine the fundamental properties of an atom, including its size, mass, and chemical behaviour.

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In a 1H Nuclear Magnetic Resonance (NMR) spectrum, signals represent different types of hydrogen atoms in a molecule. Each signal represents a group of hydrogen atoms that are chemically equivalent, meaning they have the same chemical environment and experience the same magnetic field.

In a 1H NMR spectrum, the position of each signal is determined by the chemical shift, which is a measure of the deviation of the hydrogen atom's magnetic environment from that of a reference compound. The chemical shift is reported in parts per million (ppm) relative to the reference, usually tetramethylsilane (TMS).The intensity of each signal in the 1H NMR spectrum represents the number of hydrogen atoms in each chemically equivalent group. A strong signal in the 1H NMR spectrum indicates a large number of hydrogen atoms, while a weak signal indicates a smaller number of hydrogen atoms.

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Answer:

Endothermic reaction.

Explanation:

The reactants are at a lower energy rate than the products. Because delta H is positive, energy is absorbed from the surroundings.

Various strategies are used to minimize nitrogen oxide (NOx) emissions, including the installation of catalytic converters and raising the combustion temperature.

A) Catalytic converter installation: Catalytic converters employ a catalyst to enhance chemical processes that convert NOx into nitrogen and oxygen, hence lowering emissions.

B) Higher combustion temperature: Because NOx is created at high temperatures during combustion, lowering the combustion temperature can minimize NOx emissions.

C) Excess oxygen in combustion processes: Excess oxygen in the combustion process can lower NOx emissions.

To summarize, several ways are utilized to minimize NOx emissions, including the installation of catalytic converters, lowering the combustion temperature, supplying additional oxygen to the combustion process, employing fluidized bed combustion, and absorbing pollutants using calcium carbonate.

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The pH values after the given volumes of acid have been added are: a) 12.18, b) 12.39, c) 11.78, d) 11.25, and e) 10.79.To solve the problem, we need to use the balanced chemical equation for the reaction between KOH and HClO4:

KOH + HClO4 -> KClO4 + H2O

At the start of the titration, before any HClO4 has been added, we have a solution of KOH with a concentration of 0.150 M. We can use this concentration to calculate the initial concentration of hydroxide ions in the solution:

[OH-] = 0.150 M

a) Before any HClO4 has been added, the volume of the solution is 20.0 mL. At this point, no HClO4 has reacted with the KOH, so the concentration of OH- ions is still 0.150 M.

To calculate the pH, we can use the formula for the dissociation constant of water:

Kw = [H+][OH-] = 1.0 x 10^-14

pH = -log[H+]

[H+] = Kw/[OH-] = 6.67 x 10^-13 M

pH = -log(6.67 x 10^-13) = 12.18

b) After 1.5 mL of HClO4 has been added, the volume of the solution is 21.5 mL. The moles of HClO4 added is:

0.125 mol/L x 0.0015 L = 1.875 x 10^-5 mol

The moles of KOH initially in the solution is:

0.150 mol/L x 0.020 L = 0.003 mol

Thus, the moles of KOH remaining after reaction with HClO4 is:

0.003 mol - 1.875 x 10^-5 mol = 0.00298125 mol

The total volume of the solution is 21.5 mL, so the new concentration of KOH is:

0.00298125 mol / 0.0215 L = 0.1387 M

Using this concentration, we can calculate the concentration of OH- ions:[OH-] = 0.1387 M

Using the same formula for Kw and pH as before, we find that:

[H+] = 4.06 x 10^-13 M

pH = -log(4.06 x 10^-13) = 12.39

c) Repeating the above process for a volume of 24.0 mL gives:

[H+] = 1.64 x 10^-12 M

pH = -log(1.64 x 10^-12) = 11.78

d) For a volume of 26.5 mL:

[H+] = 5.67 x 10^-12 M

pH = -log(5.67 x 10^-12) = 11.25

e) For a volume of 29.0 mL:

[H+] = 1.63 x 10^-11 M

pH = -log(1.63 x 10^-11) = 10.79

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According to the equation, the dibromide is transformed into the dichloride if the entire conversion of 1.238 g produces 0.735 g of nickel, the atomic mass of the element is 58.693 g/mol.

First, we need to find the number of moles of XBr2 and XCl2 equation. The molar mass of XBr2 is 2 times the atomic mass of the element plus 2 times the molar mass of Br, and the molar mass of XCl2 is 2 times the atomic mass of the element plus 2 times the molar mass of Cl.

Let's call the atomic mass of the element "x". Then the molar mass of XBr2 can be written as: 2x + 2(Br)

And the molar mass of XCl2 can be written as:

2x + 2(Cl)Next, we can use the given masses of XBr2 and XCl2 to find the number of moles of each substance:

Number of moles of XBr2 = 1500 g / (2x + 2(Br))

Number of moles of XCl2 = 0.890 g / (2x + 2(Cl))

Now that we have the number of moles of XBr2 and XCl2, we can use the balanced equation to find the ratio of moles of XBr2 to XCl2:

XBr2 + Cl2 -> XCl2 + Br2

2 moles of XBr2 react to form 1 mole of XCl2.

Number of moles of XCl2 = Number of moles of XBr2 / 2

Finally, we can use the number of moles of XCl2 and its molar mass to find the atomic mass of the element:

M + 159.8/1.5 = M + 70.9/0.89

0.89M + 142.333 = 1.5M +10

35.872 = 0.61M

M= 58.8g/mol

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The mass of 7,00 × 10²² NaOH molecules is 4,64 gram. 7,00 × 10²² NaOH molecules equal 0.116 moles NaOH.

To find out the mass of 7,00 × 10²² NaOH molecules you can use the following steps

Step 1: The first step is to calculate the number of moles of the compound.

mol = number of particles ÷ Avogadro's number

      = 7,00 × 10²² ÷ 6,022 × 10²³

      = 0,116 mol

Step 2: The next step is to calculate the mass of the molecules.

mass = mol × relative molecular mass

         = 0,116 mol × 40 gram/mol

          = 4,64 gram

So the mass of 7,00 × 10²² NaOH molecules is 4,64 gram.

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This phenomenon is called "reversion", and it occurs when bacteria that are capable of using alternative carbon sources are starved of carbohydrates and begin to use amino acids instead. The resulting production of ammonia can cause an increase in the pH of the medium, leading to false alkaline or pink results.

The medium being referred to in the question is likely to be a microbiological growth medium, which is used to culture and grow microorganisms. In many of these media formulations, carbohydrates are added as a carbon source for the microorganisms.

When the concentration of carbohydrates in the medium is low, certain bacteria that can use amino acids or other nitrogen-containing compounds as a carbon source may produce false positive results after prolonged incubation periods. This is because these bacteria can produce large amounts of ammonia, which can raise the pH of the medium, resulting in the formation of false alkaline or pink results.

To avoid reversion, growth media should be carefully formulated to ensure adequate concentrations of carbohydrates for the target microorganisms, and should be monitored for any changes in pH or color over time.

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147grams

Hence, The mass of one mole of magnesium nitrate$Mg{(N{O_3})_2}$ is 147grams. Note : The mass of a molecule of a substance is measured in molecular weight, which is dependent on 12 as the atomic weight of carbon-12.

The mass of one mole of magnesium nitrate is 148.3 g/mol. Then the mass of 17 moles of magnesium nitrate is 2521.1 grams.

Any substance containing 6.02 × 10²³ number of its atoms is called one mole of the substance. This number is called Avogadro number. Thus, one mole of every element contains Avogadro number of atoms. The mass of one mole of an element is called its atomic mass.

Similarly one mole of every compounds contains Avogadro number of its molecules. The mass of one mole of a compound is called its molar mass.

Molar mass of magnesium nitrate = 148.3 g/mol

then mass of 17 moles = no.of moles × molar mass.

mass = 17  × 148.3 g/mol  = 2521.2 grams.

Therefore, the mass of 17 moles of magnesium nitrate is 2521.1 grams.

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The correct formula for a reactant in an equation shouldn't be modified once it has been written.

Subscript refers to the small number at the bottom of the symbol. The amount of the element's atoms in the molecule is shown on the right side of the number. A solitary symbol's atomic number is displayed as a subscript in the bottom left corner. Once the right formula for a reactant has been written, the equation's subscripts are adjusted to make it equal. The chemical formulas of the reactants and products, in part, show how many atoms are present in each element.

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for the following chemical reaction, A-164g  B- 144.32 g of carbon dioxide are produced and C- 7.483 x [tex]10^{23}[/tex] molecules of water are produced.

A. According to the balanced chemical equation, 2 molecules of ethane (C2H6) react with 7 molecules of oxygen (O2) to produce 4 molecules of carbon dioxide (CO2) and 6 molecules of water (H2O). So, for every 7 moles of oxygen, 2 moles of ethane will be required.

Therefore, the number of moles of ethane required to react with 175 g of oxygen can be calculated as follows:

moles of O2 = 175 g / 32 g/mol = 5.47 moles

moles of C2H6 = 5.47 moles O2 / 7 moles O2/2 moles C2H6 = 0.784 moles C2H6

One mole of ethane contains 6.022 x[tex]10^{23}[/tex] molecules, so 9.85 x  [tex]10^{24}[/tex] molecules of ethane is equal to:

moles of C2H6 = 9.85 x [tex]10^{24}[/tex] molecules / 6.022 x [tex]10^{23}[/tex] molecules/mol = 1.64 moles C2H6

B- According to the balanced equation, 4 moles of CO2 are produced per 2 moles of C2H6. Hence, the number of moles of CO2 produced can be calculated as follows:

moles of CO2 = 1.64 moles C2H6 * 4 moles CO2 / 2 moles C2H6 = 3.28 moles CO2grams of CO2 = 3.28 moles CO2 * 44 g/mol = 144.32 g

C. To find the number of molecules of water produced, we first need to determine the number of moles of CO2 that have reacted.

moles of CO2 = 36.60 g / 44 g/mol = 0.832 moles\

moles of H2O = 0.832 moles CO2 * 6 moles H2O / 4 moles CO2 = 1.248 moles H2Omolecules of H2O = 1.248 moles H2O * 6.022 x[tex]10^{23}[/tex]molecules/mol = 7.483 x [tex]10^{23}[/tex]molecules.

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