What did Arrchenus define an Acid as?

Answer: If you add acid to a solution the concentration of hydrogen ions (acidity) increases and the pH decreases.

Explanation:

Answer:

The acidity of a solution increases with increasing concentration of hydrogen ions (H+). The concentration of H+ in a solution determines the pH of the solution, with lower pH values indicating a more acidic solution.

Explanation:

The water features are often associated with the condensation is the correct option are The Ocean and the Clouds and Dew.

The Condensation is the process where the water vapor will becomes the liquid. The condensation is the reverse of the evaporation, in which the liquid water becomes the water vapor. The Condensation is occurs one of the two ways: the first way is the air is cooled to the dew point and  it will becomes so saturated with the water vapor  and it cannot be hold  more of the water.

Thus, The Ocean and the Clouds and Dew is the feature of water that is connected with the condensation.

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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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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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Answer:

Covalent bond

Explanation:

A covalent bond is a type of chemical bond where two or more atoms share electrons in order to form a bond between them. This bond results from the sharing of electrons in order to attain stability and full valence electron shells for each of the atoms involved. Covalent bonds are typically formed between non-metal elements and are known for their strength and stability.

Answer:

Covalent bond

Explanation:

A covalent bond is a type of chemical bond where two atoms share a pair of electrons in order to form a chemical bond. This bond is formed when the electron pair is shared equally between the two atoms, resulting in a stable and strong bond. Covalent bonds are typically found in compounds composed of non-metallic elements, such as oxygen, nitrogen, and carbon. These bonds are important in the formation of molecules and play a key role in biological processes.

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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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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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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The volume of hydrogen at STP is required to produce 25 g of ammonia is 37.5 g.

The balanced equation for the formation of ammonia is given as follows

N₂ + 3H₂ → 2NH₃

The stoichiometry of H₂ to NH₃ is 3 : 2.

Avagadros law states that "at volume of gas is proportional to number of moles of gas at constant pressure and temperature."

Therefore, the molar ratio is equivalent to volume ratio,

Hence, the volume ratio of H₂ to NH₃ is 3 : 2

It can be concluded that 2 L of NH₃ requires 3 L of H₂.

Then 25.g of NH₃ requires = 3/2 x 25 = 37.5 g of H₂

So, volume of H₂ required is 37.5 g.

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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.

Standard deviation is a quantity which describes how spread out a set of data is.

A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean. Low standard deviation means data are clustered around the mean, and high standard deviation indicates data are more spread out.

A standard deviation close to zero indicates that data points are close to the mean, whereas a high or low standard deviation indicates data points are respectively above or below the mean. Standard deviation is a statistic that measures the dispersion of a dataset relative to its mean and is calculated as the square root of the variance.

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Answer:

yes I am good at the subject. That is my course

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:

The final equilibrium temperature is approximately 247.7°C and the percentage of ice that melts is 50%.

The amount of heat transferred is given by the equation:

[tex]Q = m * c * \triangle T[/tex]

First, we need to calculate the amount of heat needed to melt the ice. The heat required to melt ice is given by the equation:

[tex]Q = m * L[/tex]

where L is the latent heat of fusion of ice, which is 334 J/g. Therefore, the heat required to melt 50 g of ice is:

[tex]Q = 50 g * 334 J/g = 16700 J[/tex]

the heat lost by the water is equal to the heat gained by the ice:

[tex]Q_{water} = -Q_{ice[/tex]

[tex]T_f = (Q_{ice}/m_{ice}c_{ice} + Q_{water}/m_{water}c_{water}) + T_i[/tex]

Plugging in the values, we get:

[tex]T_f = (16700 J / 50 g * 2.1 J/gC + 100 g * 4.2 J/gC * (25C - T_i)) + T_i[/tex]

Simplifying this equation, we get:

[tex]T_f[/tex] = (835°C/g + 4200 J/°C + 105000 J/g) / (100 g * 4.2 J/g°C)

[tex]T_f[/tex]= (104035°C/g) / (420 J/°C)

[tex]T_f[/tex]= 247.7°C

Therefore, the final equilibrium temperature is approximately 247.7°C.

To calculate the percentage of ice that melts, we can use the equation:

% ice melted = (mass of ice melted / initial mass of ice) * 100%

mass of ice melted = [tex]Q_{ice} / L[/tex]

mass of ice melted = 16700 J / 334 J/g

mass of ice melted = 50 g

Therefore, the percentage of ice that melts is:

% ice melted = (50 g / 100 g) * 100%

% ice melted = 50%

Thus, the percentage of ice that melts is 50%.

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In most cases, the formal element that contributes most to the viewer's awareness of the passage of time is the use of duration.

This can be achieved through various means, such as the duration of shots or scenes, the pacing of events, or the progression of the plot. For example, in a film or video, longer shots or scenes can create a sense of leisurely passing time, while quicker cuts or montages can convey a sense of accelerated time. In a musical composition, changes in tempo and rhythm can also contribute to the perception of time passing.Other formal elements, such as lighting and sound design, can also play a role in shaping the viewer's perception of time, but the most direct and significant influence is typically the use of duration.

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The limiting reactant is calcium hydroxide. The maximum amount of calcium chloride that can be formed is 44.6 grams.

The balanced chemical equation for the reaction between calcium hydroxide and hydrochloric acid is:

Ca(OH)2 + 2HCl → CaCl2 + 2H2O

To determine the maximum amount of calcium chloride that can be formed, we need to identify the limiting reactant. The limiting reactant is the reactant that is completely consumed in the reaction, thus limiting the amount of product that can be formed.

We can determine the limiting reactant by calculating the amount of product that can be formed from each reactant and comparing the results.

First, let's calculate the amount of calcium chloride that can be formed from 27.8 grams of calcium hydroxide. We'll use the molar mass of calcium hydroxide to convert grams to moles, and then use the mole ratio between calcium hydroxide and calcium chloride to calculate the amount of calcium chloride that can be formed:

27.8 g Ca(OH)2 × (1 mol Ca(OH)2 / 74.093 g) × (1 mol CaCl2 / 1 mol Ca(OH)2) × (110.98 g CaCl2 / 1 mol CaCl2)

= 44.6 g CaCl2

Next, let's calculate the amount of calcium chloride that can be formed from 22.7 grams of hydrochloric acid. We'll use the molar mass of hydrochloric acid to convert grams to moles, and then use the mole ratio between hydrochloric acid and calcium chloride to calculate the amount of calcium chloride that can be formed:

22.7 g HCl × (1 mol HCl / 36.46 g) × (1 mol CaCl2 / 2 mol HCl) × (110.98 g CaCl2 / 1 mol CaCl2)

= 77.5 g CaCl2

From the calculations above, we can see that the amount of calcium chloride that can be formed from 27.8 grams of calcium hydroxide is 44.6 g, while the amount that can be formed from 22.7 grams of hydrochloric acid is 77.5 g. Therefore, the limiting reactant is calcium hydroxide.

The maximum amount of calcium chloride that can be formed is 44.6 grams.

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The units that express specific heat capacity are J/(g°C), J/(gK), cal/(g°C), and cal/(gK). The J stands for joules, which is the SI unit of energy, g stands for gram, which is the SI unit of mass, °C stands for degrees Celsius, and K stands for Kelvin.

The cal stands for calorie, which is a non-SI unit of energy. Specific heat capacity is the amount of energy required to increase the temperature of a unit mass of a substance by one degree. It is usually expressed in joules per gram degree Celsius (J/g°C) or calories per gram degree Celsius (cal/g°C). The specific heat capacity of a substance is related to its molecular structure and the intermolecular forces that exist between its molecules. Substances that have strong intermolecular forces, such as those composed of molecules with multiple polar bonds, typically have higher specific heat capacities than substances with weak intermolecular forces, such as those composed of molecules with few or no polar bonds.

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The two major components, making up at least 3% each of the human body are Magnesium and Nitrogen.

Only six elements make up nearly all of the human body: oxygen, hydrogen, nitrogen, carbon, calcium, and phosphorus. The remaining mass is composed of sulfur, potassium, sodium, chlorine, and magnesium, which together make up around 0.85% of the total mass. These 11 components are all necessary components.

An adult's body has about 25 g of magnesium, with the majority of that amount found in soft tissues and 50–60% in the bones. Blood serum contains less than 1% of the total amount of magnesium, and these levels are closely monitored.

One of the primary elements in the body, nitrogen is necessary for the formation of various nitrogenous molecules, including hormones, neurotransmitters, and antioxidant defense components.

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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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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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A 0.280M solution of [tex]KBr[/tex] in 16.743 L where 13.0 g of [tex]AgBr[/tex] must be precipitated in order to from an [tex]AgNO3[/tex] solution with 0.490 mol

Given the concentration of [tex]KBr[/tex] = 0.280M

The mass of [tex]AgBr[/tex] = 13g

The number of moles of [tex]AgNO3[/tex] is = 0.490

The volume of [tex]KBr[/tex] required = V

The volume of a 0.280 m solution of [tex]KBr[/tex] needed to precipitate 13.0 g of [tex]AgBr[/tex] from a solution containing 0.490 mol of [tex]AgNO3[/tex] is calculated using the following equation:

[tex]KBr+AgNO3--- > AgBr+KNO3[/tex]

Volume (L) = (Moles * Molar Mass [tex]AgBr[/tex]) / (Molarity [tex]KBr[/tex])

Volume (L) = (0.490 * (107.8682)) / (0.280 mol/L)

Volume (L) = 16.743 L

As a result, 13.0 g of AgBr must be precipitated from a solution containing 0.490 mol of [tex]AgNO3[/tex] using 16.743 L of a 0.280 m solution of [tex]KBr[/tex].

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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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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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The brine a more effective de-ice solution than solid ice melt products is the correct option is : Since brine is already a solution, the Van't Hoff Factor is higher than solid salt, making the freezing point depression greater.

The Brine, is the concentrated salt solution, that is better to prevents and to eliminates the ice from the roads, but it can be more costly to store it. Since the brine is already the solution, the Van't Hoff Factor will be higher than the solid salt, the making is the freezing point depression is greater.

Freezing point depression requires a solution to occur. Brine starts as a solution, where solid salt must form a solution first.

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0.99 moles of copper (Cu) would be made when 0.33 mole of copper (II) phosphide (Cu3P2) deteriorates.

Copper (II) phosphide (Cu3P2) is a compound that can be made through a reaction between copper and phosphorus under controlled conditions. It can also be made by the reaction between copper sulfate and sodium hypophosphite or by reducing copper (II) phosphate with carbon at high temperatures.

Copper (II) phosphide (Cu3P2) has several uses. It is used as a rodenticide to control rodents, as a catalyst, as a lubricant, as an alloying agent, and as a pigment in some ceramic glazes.

The decomposition of copper (II) phosphide (Cu3P2) can be represented by the following chemical equation Cu3P2 → 3Cu + 2P.

The number of moles of copper produced when 0.33 mole of copper (II) phosphide decomposes will be:

0.33 moles Cu3P2 / 1 x 3 moles Cu / 1 mole Cu3P2 = 0.99 moles Cu

So, 0.99 moles of copper (Cu) would be made when 0.33 mole of copper (II) phosphide (Cu3P2) deteriorates.

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The observed phenomena is the result of a chemical interaction between aluminium and copper nitrate. The following happens when aluminium is added to a copper nitrate solution: 2Al + 3Cu(NO3)2 -> 3Cu + 2Al(NO3) (NO3) 3.

The inorganic substance copper nitrate solution has the vivid blue chemical formula Cu(NO3)2. It dissolves easily in water and easily separates into copper (Cu2+) and nitrate (NO3-) ions in solution. Copper nitrate solution is frequently employed in industrial processes like electroplating and as a catalyst in organic synthesis as well as laboratory studies. Moreover, it is employed in the manufacturing of a number of copper-based products, including copper oxide, copper hydroxide, and copper carbonate. While highly reactive, copper nitrate solution can be hazardous if handled improperly, especially when it comes into touch with combustible materials as this could result in the production of explosive compounds. As a result, it needs to be handled carefully and in a controlled environment.

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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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Answer: 20.16cm³ of CO₂ produced

Explanation: the equation for the reaction between carbon monoxide (CO) and oxygen (O2) is:

2CO (g) + O₂ (g) → 2CO₂ (g)

Given that 20 cm³ of carbon monoxide is reacted with 10 cm³ of oxygen. From the equation,

we can see that two molecules of CO react with one molecule of O₂to produce two molecules of CO₂

Since we have 20 cm³ of CO and 10 cm³ of O₂, we can calculate the number of moles of CO and O₂ as follows:

CO: 20 cm³ x (1 mole / 22.4 cm³) = 0.89 moles

O₂: 10 cm³ x (1 mole / 22.4 cm³) = 0.45 moles

Since two molecules of CO react with one molecule of O₂, the number of moles of O₂ is half the number of moles of CO. Since we have 0.45 moles of O₂, we can calculate the number of moles of CO₂ produced as follows:

0.45 moles x 2 = 0.9 moles

Finally, to find the volume of CO₂ produced, we can multiply the number of moles of CO₂ by the volume occupied by one mole of CO₂:

0.9 moles x 22.4 cm³/mole = 20.16 cm³

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The  compound will be isolated from the aqueous acidic solution that results from mixing 3 m HCl with the ether solution of the organic reactants is ethyl-4-aminobenzoate.

The insulation of organic composites is of particular interest to the oil painting, medicinal, ornamental, and alcohol product diligence. Achieving a good separation requires a conscious selection of the fashion to be used, depending on the physical parcels of the organic emulsion.

The compound that shows basic nature can be isolated in aqueous medium by mixing HCl solution.

Among the given (a) ethyl-4-aminobenzoate has a basic amino group which can react with HCl to form soluble salt that enters into aqueous medium.

So (a)  Ethyl 4-aminibenzoate.

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Complete question:

According to the procedure for experiment 4C, which compound will be isolated trom the aqueous acidic solution that results from mixing 3 M HC with the ether solution of the arganic reactants?

A Ethyl 4-aminibenzoate

B 9 fluorenone

C benzoic acid

D the hydrochloride salt of benzoic acid

Answer:

okay

Explanation:

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