who is the father of tillage​?

KH2PO4 is a more suitable choice as a buffer because it has a greater buffering capacity due to the presence of the weak acid and its conjugate base.

KHPo4 is not considered an effective buffer compared to KH2PO4 due to its limited buffering capacity. The effectiveness of a buffer is determined by the concentration and dissociation properties of its conjugate acid-base pair.

KH2PO4 is a salt composed of the weak acid H2PO4- and its conjugate base HPO4^2-. In an aqueous solution, KH2PO4 can dissociate to release H+ ions from the H2PO4- component, which acts as a weak acid, and the HPO4^2- component can accept H+ ions, acting as a weak base. This allows KH2PO4 to effectively resist changes in pH when small amounts of acid or base are added to the solution.

On the other hand, KHPo4 consists of the strong acid H3PO4 and the weak base HPO4^2-. H3PO4 fully dissociates in water, providing a large concentration of H+ ions, making it difficult for the HPO4^2- to effectively act as a base and maintain pH stability.

Therefore, KH2PO4 is a more suitable choice as a buffer because it has a greater buffering capacity due to the presence of the weak acid and its conjugate base.

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The new volume is approximately 197 L. The correct option is C

We can use the combined gas law, which relates the pressure (P), volume (V), and temperature (T) of a gas. The combined gas law states that:

(P1 x V1) / T1 = (P2 x V2) / T2

Where

In this case, we know that the initial volume (V1) is 400 L and the initial temperature (T1) is 600 K. We want to find the final volume (V2) when the temperature (T2) drops to 295 K. We can assume that the pressure is constant.

Substituting these values into the combined gas law, we get:

(P1 x V1) / T1 = (P2 x V2) / T2

P1 and P2 are the same, so we can cancel them out:

V1 / T1 = V2 / T2

Substituting the values we know:

400 L / 600 K = V2 / 295 K

Solving for V2, we get:

V2 = (400 L / 600 K) x 295 K

V2 = 196.67 L

So, the new volume is approximately 197 L

Therefore the correct option is C

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Answer:

a solid is a physical item

Answer:

The rate of photosynthesis is the dependent and concentration of carbon dioxide is the independent

Explanation: The rate of photosynthesis depends on how much carbon dioxide is being supplied which makes it the dependent variable.

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The 132 L  volume would it be under these conditions.

What is volume ?

Space is occupied by every three-dimensional object. Its volume serves as a gauge for this area. The area contained by an object's limits in three-dimensional space is referred to as its volume. Another name for it is an object's capacity.

What is mole ?

A mole is the atom's elementary particle, an ion. The mole of the substance is always related to the Avogadro number. The mole is always associated with the weight or mass of the element or substance. The standard unit of a mole is mol. The mole is a significant factor of the reactant and products to form an equation. A mole calculates the atom, ion, and substance weighs.

Therefore, 132 L  volume would it be under these conditions.

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If an asteroid created enough dust to block out the Sun, it would likely have a severe and devastating effect on life on Earth.

Green plants, which rely on sunlight for photosynthesis, would not be able to produce the energy they need to survive, leading to mass die-offs of vegetation. This would in turn have a cascading effect on the entire ecosystem, as animals that depend on plants for food would also struggle to survive. The lack of sunlight would also cause a decrease in temperature, which can have a negative impact on many organisms.

The lack of sunlight would also have a severe impact on the climate and weather patterns, leading to a "nuclear winter" scenario, where the temperature drops significantly, leading to the extinction of many species, including the human species, who rely on the food chain.

Answer: Only non-polar medicines can diffuse across the membrane. non-polar drugs are lipid soluble, while polar drugs are water soluble, so polar drugs cant absorb through biological membranes.

#1 - Amine (presence of NH2)

#2 - Alcohol (presence of OH)

#3 - Carboxylic acid (presence of COOH)

#4 - halocarbons (presence of Chlorine "Cl")

In order to name the given compounds, we only need to identify their functional groups.

• The functional group for amine is R-NH2

• The funciona lgroup fror alcohol is R-OH

• The functional group for carboxylic acid is RCOOH

• The compound that contain halogen such as flourie, Chlorinwe, Bromine and Iodine are halocarbons

According to the given structures, the name of each the compound based on their functional group are;

#1 - Amine (presence of NH2

#2 - Alcohol (presence of OH)

#3 - Carboxylic acid (presence of COOH)

#4 - halocarbons (presence of Chlorine "Cl")

Answer:

B. Combustion .

Explanation:

Hello.

In this case, since this reaction is started by pentyne and oxygen which are converted to carbon dioxide and water, we can infer this is a combustion reaction because it involves the burnt of a fuel, in this case the pentyne, by using oxygen in order to yield carbon dioxide and water, which are smaller molecules than the original pentyne.

It is important to notice that these reactions are very exothermic because they go to break the C-H bonds in the fuel which release a considerably high amount of energy.

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The only significant factors in determining the boiling points, in dispersion forces are Cl2, Ne, CCl4. Correct answer: letter A.

This is because these molecules do not form any significant intermolecular forces, such as hydrogen bonding or dipole-dipole interactions, so dispersion forces are the only significant factors in their boiling points.

Dispersion forces also known as London forces, are the weakest type of intermolecular forces. They are the forces of attraction between molecules due to the temporary, instantaneous dipoles that form as an electron in one atom is attracted to the nucleus of another atom.

These instantaneous dipoles induce dipoles in adjacent molecules, leading to attraction. Dispersion forces are responsible for the cohesion of nonpolar substances such as noble gases and hydrocarbons.

In which of the following groups of substances would dispersion forces be the only significant factors in determining boiling points?

I. Cl2

II. HF

III. Ne

IV. KNO2

V. CCl4

Group of options:

A. I, III, V

B. I, II, III

C. II, IV

D. III, IV, V

E. II, V

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The findings of scientific investigation can be seen in four real-world situations:

Finding the answer to a topic through a variety of research techniques is the process of conducting a scientific investigation.

Thus, the findings of scientific investigation can be seen in four real-world situations:

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Answer:

Moles to grams carbon dioxide

1 mole is equal to 1 moles Carbon Dioxide, or 44.0095 grams.

Explanation:

Moles to grams carbon dioxide

1 mole is equal to 1 moles Carbon Dioxide, or 44.0095 grams.

The empirical formula is CrCl3.

What exactly are empirical formulas?

An empirical formula is a compound's chemical formula that only specifies the ratios of the elements it contains and not the precise number or arrangement of atoms. This would be the compound's element with the lowest whole number ratio.

Ionic compounds occur as crystal lattices containing cations and anions, as opposed to molecules. The empirical formula that identifies the proportion of cations present is already included in the chemical formula used to express an ionic compound like chromium (III) chloride. Each chromium (III) ion contains three chloride ions.

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As far as the intelligence of canines, it is widely accepted as a fact that the Border Collie is the most intelligent breed of dog.

The conclusion that border collies are the most intelligent breed of dog is credited to a canine psychologist by the name of Stanley Coren. He studied over 138 recognized breeds of dogs to measure the ease with which they learned new commands and the obedience rate of each breed.

Coren studies the learning and obedience of Border Collies over the course of 199 trials and found that this breed of dog performed 95% better than most other breeds, with only 9 of the 138 breeds studied coming close to the results of the border collie. Easily earning the title of the most intelligent breed of dogs.

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Answer:

The US

Explanation:

Answer:

2p electron .

Explanation:

Answer:

Question not very specific, but here is an answer you might be looking for. Density of object at 2 degrees C, 0.99997 g/mL. Hope it IS the answer you are looking for!

Explanation:

The final concentration of the solution is 1.54 M. The quantity of solute present per 100 ml of the solution is considered the solution's concentration.

The amount of solute that has been dissolved in a specific volume of solvent or solution is measured by the solution's concentration. There are a lot of dissolved solutes in a concentrated solution.

To find the final concentration,

we can calculate the concentration of the initial solution:

C1V1 = C2V2

where C1 = initial concentration, V1 = initial volume, C2 = final concentration, and V2 = final volume.

We can solve for C1:

C1 = (C2V2) / V1

Substitute the values,

C1 = (1.20 M * 208 mL) / 57.0 mL

C1 = 4.40 M

the initial concentration of the solution was 4.40 M.

Now we need to calculate the final concentration of the solution after diluting a 104 mL portion with 193 mL of water

C1V1 = C2V2

where C1 = initial concentration (4.40 M), V1 = initial volume (104 mL), C2 = final concentration, and V2 = final volume (104 mL + 193 mL = 297 mL).

We can solve for C2:

C2 = (C1V1) / V2

C2 = (4.40 M * 104 mL) / 297 mL

C2 = 1.54 M

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The total kilojoules in two tablespoons is  836.8 kJ.

To determine the total kilojoules in two tablespoons of a substance, we need to know the specific substance and its energy content per tablespoon. Different substances have different energy values, so without this information, it is not possible to provide an accurate calculation.

The energy content of food or substances is typically measured in kilocalories (kcal) or kilojoules (kJ). 1 kilocalorie is equal to 4.184 kilojoules. The energy content of a substance is often listed on food labels or in nutritional databases.

For example, if we have the energy content of a substance as 100 kilocalories (kcal) per tablespoon, we can convert it to kilojoules by multiplying it by 4.184:

100 kcal * 4.184 kJ/kcal = 418.4 kJ

So, if we have two tablespoons of this substance, the total energy would be:

418.4 kJ/tablespoon * 2 tablespoons = 836.8 kJ

It's important to note that the energy content of a substance can vary depending on its composition, density, and other factors. Therefore, it is always recommended to refer to reliable sources such as food labels, nutritional databases, or consult a qualified professional to obtain accurate information regarding the energy content of specific substances.

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Answer:

6.9428 kg of CO2

Explanation:

1) Use Avogadro's number that states 1 mole = 6.022 x 10^23 particles. Convert 9.5 x 10^25 molecules into moles.

9.5 x 10^25 CO2 molecules\(x\frac{1 mole CO2}{6.022 x 10^23}\) = 157.75 moles CO2

2) Convert 157.75 moles of CO2 into grams. CO2's molar mass is 44.01g.

\(157.75moles CO2\) \(x \frac{44.01g/mol}{1 mole CO2}\) = 6942.79g

3) Convert 6942.79 grams into kilograms (divide by 1000):

6.9428 kg

It is necessary for astronauts on the International Space Station to generate and recycle oxygen because There is not enough oxygen in space to sustain life.

The correct answer choice is" There is not enough oxygen in space to sustain life."

In space, there is no breathable air as there is on Earth, and the amount of oxygen available is limited. Astronauts need a constant supply of oxygen to breathe and to sustain their bodily functions.

Therefore, the International Space Station has a closed-loop life support system that generates and recycles oxygen. This system converts carbon dioxide exhaled by the astronauts into oxygen through a process called electrolysis.

The generated oxygen is then supplied back into the station's atmosphere. This process helps ensure that the astronauts have a constant supply of breathable air and can survive in the space station for extended periods of time.

Therefore "There is not enough oxygen in space to sustain life." is the correct answer.

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Option D is correct It is present inside a magnet Outside of the magnet, magnetic field lines travel from north to south.

A magnet's North pole is where magnetic field lines always start and run down to the South pole. Because field lines act as though they are repelling one another, they never intersect as they travel back to the North pole from the South pole inside the magnet.

The magnetic field's characteristic is that it always seeks the route with the least amount of resistance between magnetic poles. Never do they cross each other. They are all equal in strength.

At the poles, the magnetic field is strongest. Magnetic field lines have the following characteristics: they start at the North Pole and converge at the South Pole.

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Answer:

General-purpose governments provide many different services while special-purpose governments provide specific services.

Explanation:

The rate of reaction is directly proportional to the concentration of reactants &  temperature of the reaction.

So, 0.10M HCl at 80 o C will result in the fastest rate of reaction with 1.00g of zinc.

The rate of reaction is directly proportional to the concentration of reactants & temperature of the reaction So, 0.10M HCl at 80o C will result in the fastest rate of reaction with 1.00g of zinc.

What is temperature?

How hot or cold something is can be expressed numerically using the physical concept of temperature. Temperature is measured with a thermometer. Different temperature scales, which traditionally established various reference points and thermometric materials, are used to calibrate thermometers.

The rate of reaction is directly proportional to the concentration of reactants \& temperature of the reartion. So, $0.10\(\mathrm{M} \mathrm{HCl}$ at $80^{\circ} \mathrm{C}$ will result in $Q_{\text {astest rate of reaction with } 1.00 \mathrm{~g} \text { of }}$\)zinc.

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The formula of the hydrate is NiCl2·4.27H2O. The name of the hydrate is nickel (II) chloride tetrahydrate.

To determine the formula and name of the hydrate, we need to first find the value of "x" in the formula NiCl2·xH2O using the given information.

Mass of water = Initial mass - Mass of anhydrous salt

Mass of water = 0.470 g - 0.256 g

Mass of water = 0.214 g

The molar mass of H2O is 18.015 g/mol, so the number of moles of water present in the hydrated salt can be calculated as:

Moles of water = Mass of water / Molar mass of water

Moles of water = 0.214 g / 18.015 g/mol

Moles of water = 0.0119 mol

The number of moles of anhydrous salt can be calculated by dividing its mass by its molar mass:

Moles of anhydrous salt = Mass of anhydrous salt / Molar mass of anhydrous salt

Moles of anhydrous salt = 0.256 g / (Ni: 58.69 g/mol + 2Cl: 2 x 35.45 g/mol)

Moles of anhydrous salt = 0.00279 mol

The ratio of moles of water to moles of anhydrous salt is equal to "x" in the formula NiCl2·xH2O:

Moles of water / Moles of anhydrous salt = x

0.0119 mol / 0.00279 mol = x

x ≈ 4.27

Therefore, the formula of the hydrate is NiCl2·4.27H2O. The name of the hydrate is nickel (II) chloride tetrahydrate.

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Answer:

Subside

Explanation:

Answer:

lower, reduce, decline

Explanation: