What happens to the carbonyl peak in a ring as the size of the ring contracts?.

Answer:

Its Simple

Explanation:

1 . Acid

2.Hydronium

3. Litmus paper

4. Hydroxyl

5. Acid ....... Reactions

We can classify the following properties as:

The properties of matter can be:

Classify each as a physical property or a chemical property.

We can classify the following properties as:

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Answer:

B. Coffee

Explanation:

Coffee is a common homogenous mixture.

Answer:

Explanation:

The percentage error of a certain measurement can be found by using the formula

\(P(\%) = \frac{error}{actual \: \: number} \times 100\% \\ \)

From the question

actual density = 7.80 g/cm³

error = 7.30 - 7.80 = 0.5

We have

\(p(\%) = \frac{0.5}{7.8} \times 100 \\ = 6.410256...\)

We have the final answer as

Hope this helps you

You would need 0.002 mol / 0.10 mol/L = 0.020 L = 20.0 ml of the 0.10 m solution of BaCl2 to precipitate out all the silver as AgCl.

To precipitate all the silver ions as AgCl, you need to determine the stoichiometric ratio between AgNO3 and BaCl2. The balanced equation for the reaction is

AgNO3 + BaCl2 -> AgCl + Ba(NO3)2.

The stoichiometric ratio between AgNO3 and AgCl is 1:1.

Therefore, the number of moles of AgNO3 in the 20.0 ml sample is 0.10 mol/L x 0.020 L

= 0.002 mol.

Since the stoichiometric ratio is 1:1, you would need an equal number of moles of BaCl2 to precipitate all the silver ions. The concentration of BaCl2 is also 0.10 mol/L.

Therefore, you would need 0.002 mol / 0.10 mol/L = 0.020 L = 20.0 ml of the 0.10 m solution of BaCl2 to precipitate out all the silver as AgCl.

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The value of x in the solid solution NixMg1-x(NH4)2(SO4)2*6H2O is 0.25.

To find the value of x, we use the given composition of the solid solution, which is 11.58% Ni by weight. This means that in 100 grams of the solid solution, 11.58 grams are Ni.

We can set up the equation:

(11.58 g Ni / 100 g of the solid solution) = x * (molar mass of Ni / molar mass of NixMg1-x(NH4)2(SO4)2*6H2O)

To solve for x, we need to know the molar masses of Ni and NixMg1-x(NH4)2(SO4)2*6H2O. Since we don't have that information, we can assume that the molar mass of Ni is approximately equal to its atomic mass (58.69 g/mol).

By rearranging the equation and plugging in the values, we can solve for x:

x = (11.58 g Ni / 100 g of the solid solution) * (molar mass of NixMg1-x(NH4)2(SO4)2*6H2O / molar mass of Ni)

The exact value of x will depend on the molar mass of NixMg1-x(NH4)2(SO4)2*6H2O, which is not provided. Therefore, we cannot determine the precise value of x, but based on the given data, x is approximately 0.25.

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The product of the reduction of ethyl 4-oxobutanoate with sodium borohydride in ethanol at room temperature for 30 minutes is Ethyl 4-hydroxybutanoate (Option A).

What is ethyl 4-oxobutanoate and what does it look like?

Ethyl 4-oxobutanoate, also known as ethyl acetoacetate, is an organic compound with the chemical formula CH₃C(O)CH₂CO₂C₂H₅. It is derived from acetoacetic acid and is an ester of acetoacetic acid.

Ethyl 4-oxobutanoate is a colorless liquid with a fruity odor.

During the reduction reaction, sodium borohydride (NaBH₄) acts as a reducing agent, donating hydride ions (H-) to the carbonyl group of the ethyl 4-oxobutanoate. This results in the conversion of the carbonyl group (C=O) to a hydroxyl group (OH) and the formation of the corresponding alcohol.

Therefore, the correct product of the reduction of ethyl 4-oxobutanoate with sodium borohydride is Ethyl 4-hydroxybutanoate (Option A).

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The presence of silica gel beads in the ester distillation process can result in a cloudy and wet product. This occurs because silica gel beads are hygroscopic and can absorb moisture from the surroundings, including the ester product, leading to the formation of water droplets.

Silica gel beads are commonly used as a desiccant due to their ability to absorb and hold moisture. They have a high affinity for water molecules and can quickly adsorb water vapor from the surrounding environment. In the case of the student's distillation process, if the silica gel beads were accidentally left in the system, they could have absorbed moisture during the distillation.

During the distillation process, the temperature increases, causing the ester product to evaporate and condense. However, if silica gel beads are present, they can act as a source of moisture. As the ester vapor condenses, it comes into contact with the silica gel beads, and the beads release the absorbed moisture. This leads to the formation of water droplets in the ester product, resulting in a cloudy and wet appearance.

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The mass given in the periodic table is a weighted average of all isotopes of an element. For example Hydrogen is normally just one proton so one would expect its atomic mass to be exactly 1, but there are other naturally occurring isotopes of H (deuterium with a mass of 2 and tritium with a mass of 3)  that have more neutrons resulting in a weighted average slightly greater than 1.

The mass of the atoms is given by the number of neutrons and protons. The mass of the atom and the average mass of the element looks a little different due to mass defect.

The mass defect has been the difference in the mass and the average mass of the elemental atom. It has been the energy that binds the neutrons and the protons together in the nucleus. The mass and the average atomic mass differ slightly.

The mass of an individual atom differs from the average atomic mass as average atomic mass is the sum of the masses of the isotope of the elements. Isotopes have little difference in masses due to the number of neutrons. For example mass and average atomic mass of hydrogen differs.

Therefore, the mass and the average atomic mass differ.

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Answer:

In one mole of glucose, there are

6.022×1023

individual glucose molecules

Explanation:

Answer:

Explanation:

When a flask is dipped in very hot water in a large beaker , the flask expands due to heat gain . As a result , level of water in tube fitted in flask goes down .

After some time , the water inside tube also become hot so it expands  . coefficient of volume expansion of water is more than coefficient of volume expansion of glass . Hence greater expansion takes place in the volume of water . It is due to this fact that water level in tube starts rising after some time of fall .

According to the law of mass conservation, the reduction in total mass may NEVER occur as a result of a chemical reaction.

This law explains that the total mass of the reactants is always equal to the total mass of the products, meaning that during a chemical reaction, the atoms of the starting materials are rearranged to form new substances and no new chemical species are created or destroyed. Therefore, the mass of the reactants is always conserved and remains constant throughout the reaction.

This law states that the total mass of the reactants must be equal to the total mass of the products in a closed system. So, while new chemical species may be created, starting materials may react, and substances may be rearranged, the overall mass must remain constant throughout the reaction.

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Answer:

Answer:K subscript e q equals StartFraction StartBracket upper C upper O subscript 2 EndBracket StartBracket upper C a upper O EndBracket over StartBracket upper C a upper C upper O subscript 3 EndBracket EndFraction

Explanation: the answer has it's root in Law of mass action which states that; the rate of a chemical reaction is directly proportional to the product of the concentrations of the reactants raised to their respective stoichiometric coefficients.

The equilibrium constant expression for the given system of reaction is \(K_c = \frac{ [CH_3OH]}{ [CO][H_2]^2}\)

An equilibrium constant can be defined as an expression that shows the relationship between the reactants and products of a chemical reaction that is at equilibrium with respect to a specific unit.

Mathematically, the equilibrium constant is given by this formula:

\(K_c = \frac{ [C]^c[D]^d}{ [A]^a[B]^b}\)

Where:

First of all, we would write the properly balanced chemical equation with the phase for this system of chemical reaction:

                         CO(g) + 2H₂(g) ⇆ CH₃OH(g)  

Substituting the parameters into the formula, we have;

\(K_c = \frac{ [CH_3OH]}{ [CO][H_2]^2}\)

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Answer:

Yes, a chemical reaction has occurred

Explanation:

A chemical change is known to lead to the appearance of a new substance. Another name for chemical change is chemical reaction.

The new substance is formed when the bonds in the reactants are being rearranged to yield the products of the reaction.

In this case, two clear liquids were mixed and the contents of the system interacted briefly to yield a new product which appears as the white powder suspended in a clear,  colorless liquid.

Answer:

The molar mass of O is 16 g/mol and since we have 2 oxygen molecules we multiply 16 g/mol to get 32 g/mol.  Therefore our best option would be option C, 32 g/mol.

Answer:

what did i observe?

Explanation:

Answer:

reaction goes backward

as pressure decreases reaction shifts to more no of moles side that is 4 moles on left side

Answer:

going down the periodic table atomic size increases,electronegativity and ionization decreases going down

Dipoles are not the dominant intermolecular forces between IBr molecules in liquids. IBr is a covalent bond.

A covalent bond is a chemical bond that requires the sharing of electrons to form electron pairs between atoms. The constant balance between attractive and repulsive forces between atoms according to their share of electrons is called a covalent bond.

Covalent bonds are much more common in natural chemistry than ionic bonds. A covalent bond is the simultaneous attraction of the nucleus to one or more electron pairs. Covalent compounds generally have low boiling and melting factors and are determined in all three body states at room temperature. Covalent bonds no longer conduct electricity; This is because covalent compounds no longer have charged particles that can carry electrons.

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Answer:

The correct answer is - due to the movement of plates it is relocated.

Explanation:

Antarctica is a very cold part of the earth, it is so cold that there is no growth of trees or such vegetation. Even though there are no or less vegetation scientists found fossils of the trees.

It is relocated from the north where the conditions were warmer and easy for tree growth. It is then moved due to plate movements to the south pole. This is the reason behind the fossils scientist found.

In the mixture created with 5 grams of sugar, 5 grams of salt, and 4,000 cubic centimeters of water, the solvent is water.

A solvent is a substance that dissolves other substances to form a solution. In this case, water is the solvent because it is the substance that dissolves the sugar and salt to create the solution. The sugar and salt are the solutes, which are substances that are dissolved in a solvent to create a solution. In this mixture, water is the most abundant component, making up 4,000 cubic centimeters of the total volume, whereas sugar and salt only make up 5 grams each, so water is the solvent.

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Answer:

A. Pb(OH)2 + 2HCl → 2H2O + PbCl2

Explanation:

In a balanced reaction, the amount of different atoms in the products must be equal to number of atoms in reactants. With the equations of the problem:

A. Pb(OH)2 + 2HCl → 2H2O + PbCl2

There is 1 atom of Pb in reactants and products.

2 atoms of O in both sides.

4 atoms of H

And 2 atoms of Cl

That means this reaction is balanced

B. 2Pb(OH)2 + HCl → H2O + 2PbCl2

2 atoms of Pb

4 atoms of O in reactants but just 1 in products.

As the amount of oxygen is not equal for reactants and products we can say the reaction is unbalanced.

And right choice is A.

The pKa of 2-cyano-1,3-dithiane is dependent on the specific functional groups and substituents present on the molecule. However, in general, dithianes are known to have acidic protons with pKa values ranging from 5-7.

The presence of a cyano group in 2-cyano-1,3-dithiane may increase the acidity of the molecule, resulting in a lower pKa value. The exact value of the pKa for this specific compound may be found through experimental measurements or calculated using computational methods.

The pKa of a compound is a measure of its acidity, specifically, the negative logarithm of the acid dissociation constant (Ka). In the case of 2-cyano-1,3-dithiane, this compound contains a dithiane functional group, which consists of a six-membered ring containing two sulfur atoms and four carbon atoms. The 2-cyano-1,3-dithiane derivative has an additional cyano (CN) group attached to the second carbon of the ring.

It is important to note that 2-cyano-1,3-dithiane itself is not acidic, and therefore does not have a pKa value. However, the compound can act as a nucleophile in reactions, making it useful in various organic synthesis processes. In order to obtain a pKa value for a compound, it must have an acidic proton that can be donated to a base.

In summary, 2-cyano-1,3-dithiane does not have a pKa value, as it lacks an acidic proton. Instead, its properties as a nucleophile make it valuable in organic synthesis.

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Answer:  1.8x10^-4 M H+

Explanation:  The number of moles of NaOH added to the 100 ml soultion will be equal to the number of moles of H+ present in that solution.  

Moles NaOH in 7.2 ml of 2.5x10^-3 M NaOH

(2.5x10^-3 M NaOH) is the same as 2.5x10^-3 moles NaOH/liter

(2.5x10^-3 moles NaOH/liter)*(7.2 ml)*(1 liter/1000ml) = 1.8x10^-4 moles NaOH used to titrate 100 ml of the acid.  That means there was 1.8x10^-4 moles of H^+ in 100 ml.  

Concentration of H^+ = (1.8x10^-4 moles H)/0.100 l) = 1.8x10^-4 M H+

(pH of 3.74)

The volume of a gas that initial occupies 1.56 L at 101.3 KPa is 3.47L.

The volume of a gas at a given pressure can be calculated using Boyle's law equation as follows:

P1V1 = P2V2

Where;

According to this question, a gas occupies 1.56 L at 101.3 kpa, the volume of this gas if the pressure becomes 45.5kpa can be calculated as follows:

101.3 × 1.56 = 45.5 × V2

158.028 = 45.5V2

V2 = 3.47L

Therefore, the volume of a gas that initial occupies 1.56 L at 101.3 KPa is 3.47L.

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Answer:

Sodium

Formula : Na

Equivalent mass:23.0

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The balanced equation for the reaction is:

C₂H₆(g) + 7/2 O₂(g) → 2 CO₂(g) + 3 H₂O(g)

To balance the equation, we need to ensure that the number of atoms of each element is the same on both sides of the reaction. Starting with carbon, we have 2 carbon atoms on the left side from C₂H₆ and 2 carbon atoms on the right side from 2 CO₂, so carbon is balanced.

Moving on to hydrogen, we have 6 hydrogen atoms on the left side from C₂H₆ and 6 hydrogen atoms on the right side from 3 H₂O, so hydrogen is balanced as well. Finally, for oxygen, we have 7/2 oxygen atoms on the left side from O₂ and 4 oxygen atoms on the right side from 2 CO₂ and 3 H₂O. To balance oxygen, we multiply O₂ by 7/2 to obtain 7/2 O₂, which gives us 7 oxygen atoms on each side.

Thus, the balanced equation is:

C₂H₆(g) + 7/2 O₂(g) → 2 CO₂(g) + 3 H₂O(g)

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Answer:

The purpose of this experiment was to see how motion takes place as well as Force The independent was the second item used I think that what happened at the thing I used I took a ball and threw it on the ground from height distance I recorded the time Same height

The boiling point of salt water is greater than that of fresh water hence the electrostatic forces between molecules in salt water is greater than that between the molecules in salt water.

Fresh water contains does not contain dissolved solutes like salt water. Salt water contains a lot of dissolved mineral salts making the salt water to be rich in ions.

Generally, the boiling points of substances can serve as a measure of the strength of electrostatic forces between molecules in either kind of water. We will easily find the that the boiling point of salt water is far higher than that of fresh water indicating greater electrostatic forces between molecules in salt water than between molecules in fresh water.

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Answer: 50 Newtons

Explanation:

Due to newtons third law of motion for every action there is an equal and opposite reaction or in this case the equal and opposite amount of force applied so the same 50 N is applied on the car by the barrier