define atom and give an example

Side products produced in the dehydration of cyclohexanol to cyclohexene would be ethers

Alcohols to alkene

       C6H11OH with conc H2SO4 gives C6H10 + H2O

What is E1 mechanism?

Dehydration reaction involves 3 steps:

Even weakly basic substances such as water, can deprotonate a carbocation to create an alkene.

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Answer:

a. Alkaline base

b.neutralising

Explanation:

Answer:

A) Alkaline Base.

B) Neutralizing

HOPE IT HELPS

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When two amino acids undergo condensation to form a dipeptide, the byproduct of the reaction is water.

Condensation occurs through the removal of a hydroxyl group (-OH) from the carboxyl group of one amino acid and a hydrogen atom (-H) from the amino group of the other amino acid. The resulting chemical reaction leads to the formation of a peptide bond between the two amino acids, joining them together.

The release of water during this condensation or dehydration synthesis reaction allows for the formation of a dipeptide, which serves as the building block for larger polypeptides and proteins.

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Answer:

Sugar dissolves best in water

Carbon Dioxide dissolves best in water

(Not 100% sure on this one) Salt is the least soluble in water

I hope this helped :)

Answer and Explanation:

Given that

Length of race = 5km

Maximum speed = 45 yards

Based on the above information,

We transform the yards to kilometer i.e.

1 km = 1093.613 yards

And,  

x = 45 yards

So,

1093.613 × x = 45

x = 45 ÷ 1093.613

x = 0.0411480 km

Where

x = Maximum length for which the maximum speed demonstrated in kilometers is sustained.

So, we concluded that Lamor cannot go for the overall 5km as he maintained till 0.0411 km

Answer:

1. Draw a pencil line across the filter paper, 1 - 2 cm from the bottom.

2. Use a pipette or capillary tube to add small spots of each ink to the line on the paper.

3. Place the paper into a container with a suitable solvent in the bottom. For example, water. Make sure the water level is below the pencil line.

4. Allow the solvent to move through the paper, but remove the chromatogram before it reaches the top.

5. Allow the chromatogram to dry.

Extras : preferably use a lid to prevent evaporation and use a pencil or any suitable device to prop the paper in place, make sure the sides of the paper doesn't touch the sides of the beaker.

Answer: D

Explanation:

Assuming this is a diagram to show how different substances react with each other, each number is representing a different substance.

Therefore, for example, substance 2 reacts with substance 1 to create a new substance. Or substance 4 reacts with substance 3 to create a new substance.

You can think about it like this:

Orange + water --> orange juice

or

Apple + orange --> a rather depressing fruit salad

However, what do you get when you add water + water?

Water + water --> surprise... WATER!!!

Therefore between the same substances, there will no reaction.

Hoped this helped! :)

The decay of Gallium-67 follows the exponential decay formula:

\(N = N_0 * (1/2)^(^t^/^T^1^/^2^)\)

Where:

N = final amount remaining

\(N_0\)= initial amount

t = time elapsed

\(T_1_/_2\) = half-life

The first thing we can do is find out how many half-lives have passed in 127 hours:

Number of half-lives = t / T1/2 = 127 hours / 78.2 hours = 1.624

Next, we can determine how much Gallium-67 is left using this value:

Rounding to the nearest decimal point, N = N0 * (1/2) * (t/T1/2) = 51.3 mg * (1/2) * (1.624) = 25.6 mg.

Therefore, after 127 hours about 25.6 mg of gallium-67 remains.

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Answer:

The formula of the precipitate formed is AgN₃ (Silver azide).

On adding aqueous ammonia to the precipitate formed, the precipitate dissolves due to the formation of a soluble complex compound with aqueous ammonia.

Explanation:

Sodium azide is NaN₃

Silver Nitrate is AgNO₃

The two of them react and theres a double displacement where the ions exchange radicals.

NaN₃(aq) + AgNO₃(aq) → NaNO₃(aq) + AgN₃(s)

The azide ion (N₃⁻), which has very similar chemical properties as the chloride ion (Cl⁻), also forms an insoluble compound with Silver.

And just like AgCl, the precipitate (AgN₃) also dissolves when ammonia is added by forming a soluble complex.

AgN₃(s) + 2NH₃(aq) → [Ag(NH₃)₂]N₃(aq)

Hope this Helps!!!

The bond that links monosaccharides in di- and polysaccharides is called glycosidic.

What is a glycosidic bond?

A glycosidic bond is a covalent bond that connects a sugar molecule to another group or molecule, such as a glycosyl residue.

Glycosidic bonds form between two monosaccharides or between a monosaccharide and another molecule.Di- and polysaccharides are formed when several monosaccharide molecules are connected through glycosidic bonds.

Di- and polysaccharides are also referred to as glycoconjugates due to the presence of carbohydrate molecules on their surfaces, which aid in the identification of cells by the immune system.

To further elaborate, a glycosidic bond forms when a hydroxyl (-OH) group on one sugar molecule reacts with the anomeric carbon atom (the carbon atom that was involved in the carbonyl group of the sugar molecule) of another sugar molecule, resulting in the formation of a new covalent bond and the release of a molecule of water (H2O).

The resulting structure is known as a glycoside.

The type of glycosidic bond that forms depends on the orientation of the hydroxyl group on the anomeric carbon atom. If the hydroxyl group is pointing downwards (in the alpha configuration), an alpha-glycosidic bond forms.

If the hydroxyl group is pointing upwards (in the beta configuration), a beta-glycosidic bond forms.

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The fact that water has a high melting and boiling point (0°C/32°F for melting and 100°C/212°F for boiling) makes it unique.

When a substance's solid and liquid phases are in equilibrium, that point is known as its melting point. When a substance's vapour pressure matches the outside pressure, that's when it reaches its boiling point.

Saturation temperature is another name for boiling point. The pressure at when the measurement was made can occasionally be used to define boiling point. The standard boiling point is the temperature at which water begins to boil at one bar of pressure, according to the International Union on Pure an Applied Chemistry (IUPAC) definition from 1982.

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Answer:

0.04567

Explanation:

Answer:

True!

Explanation:

I took the quiz!

Answer:

true

Explanation:

Answer:

.234 M

Explanation:

Molarity, or concentration, of a substance is simply found by dividing the amount of that substance in moles by its volume. Here, we are given the mass (in grams) of Kool-Aid, so we need to convert that to moles. To do this, we simply need the chemical formula of Kool-Aid, which I have found to be C12H22O11. The molar mass of C12H22O11, using the periodic table, is 342.296 g. Next, take this molar mass and divide the given mass of Kool-Aid by it. You then get about .234 mol Kool-Aid.

Lastly, divide this by the volume of 1.0 L. You get .234 M as your final molarity.

The answers include the following:

1. Multiple lenses provide various magnifications is called compound microscope.

2. Provides support for the microscope is called base.

3. Used to sharpen image is called a fine adjustment knob.

4. Connects to a base is called an arm.

5. The flat platform where slides are placed is called a stage.

6. The lens you look through is called eyepiece lens.

This is referred to an instrument which is used to examine objects or organisms which are too small to be seen with the eyes.

It has different parts such as the stage where the specimens are placed for observation and so on.

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The frequency of a red laser that has a wavelength of 676 nm would be 4.43 x \(10^{14\) hertz.

The frequency and wavelength of a wave are related by the following equation:

λf = c

Where λ is the wavelength of the wave in meters, f is the frequency in Hertz, and c is the speed of light in a vacuum.

in this case, λ = 676 nm = 6.76 x \(10^{-7\) m

c = 299,792,458 m/s

Making f the subject of the formula:

f = c/λ

  = 299,792,458/6.76 x \(10^{-7\)

  = 4.43 x \(10^{14\) hertz

In other words, the frequency of a red laser that has a wavelength of 676 nm would be 4.43 x \(10^{14\) hertz.

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Answer:

I am pretty sure the correct answer is a reproductive system

Yes, is a correct diagram for a Lewis dot structure of Fluorine because it correctly shows 9 electrons.

What is Lewis dot structure?

The group 17 element fluorine has a total of nine electrons in the following configuration: 1s2 2s2 2p5. Fluorine's outermost shell has seven electrons. In the 2s and 2p electronic shells, respectively, there are two and five electrons. whose fluorine lewis dot structure depicts as dots.

In the Lewis structure, the letter Fluorine (F) is written inside a bracket, surrounded by seven dots that stand in for the valence electrons.

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Answer:

They are all in Group 11.

Explanation:

Look at the periodic table!

The elements gold, silver, sodium, aluminum are all metals. Gold and silver is transition metals. Sodium is in s  block and  aluminum is a p block elements in periodic table.

Metals are electropositive elements able to conduct electricity and because of the presence of a pool of free electrons.

Metallic elements forms ionic bonds with non-metals. Gold and silver are transition metals or d-block elements. They are highly conducting and silver is a common component in electrical devises.

Aluminum is a p-block element it is in 13th group and sodium is a first group element and is called as an alkali metal. Hence, all the given elements are metals.

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Answer:

More

Explanation:

The equation of the gravitational potential energy is \(E_p = mgh\),

If the mass and the gravitational field strength keep constant, the higher the man is more the gravitational potential energy.

Answer:

More potential energy

Explanation:

The higher you go, the more stored energy you have which make increases the effects of gravity on you

Answer:

question not complete please

Answer:

C. people rely on ecosystem services provided by intact ecosystems

Explanation:

:) Comment was correct! <3

Protecting and managing biodiversity resources is a crucial part of maintaining ecological harmony and ensuring the survival of species' future generations so that they can live long healthy lives. The correct option is C.

In order to stop the extinction of species, biodiversity should be protected. To keep nature in balance, it is conserved. Other organisms will suffer if one species in the food chain becomes extinct.

The systems that sustain all life on Earth, including humans, depend on biodiversity. We cannot have the healthy ecosystems that we depend on to give us the air we breathe and the food we consume without a diverse variety of animals, plants, and microorganisms.

Thus the correct option is C.

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When 2 mole of Fe2O3 and 9 molecules of CO react, 6 moles of the each product are created.

The term "mole" refers to a common scientific measurement unit for atoms, molecules, and other very small particles.

The first one is supposed to produce a balanced chemical reaction in accordance with the situation supplied.

FeO3 + 3 CO 2 Fe + 3CO2 is the formula.

Because 2 moles of Fe2O3 reacted with 3 x2=6 moles of Co to produce Fe and CO2, CO was in excess and Fe2O3 was the limiting reagent.

Utilize the mole ratio to determine the moles of the each product.

That is the Fe2O3 mole ratio: Because Fe is a 1:2 element, the mole of Fe is 2x2=4 moles.

Because the mole ratio of Fe2CO3 to CO2 is 1:3, the moles of Co2 are 2 x 3 = 6 moles.

Therefore, 6 moles of the each product will be created when 2 moles or Fe2O3 react to 9 moles of CO.

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The given statement is "trombones are mostly made of wood and can either be lacquered or plated with silver or nickel. " is false.

Trombones are not mostly made of wood. They are predominantly made of brass, which is a metal alloy consisting primarily of copper and zinc.

The brass construction gives the instrument its characteristic sound and durability. Trombones are designed with a long cylindrical tube, a sliding mechanism (the slide) for changing pitch, and a bell at the end.

While the slide and other mechanical parts may contain some wooden elements for structural support, the main body of the trombone is made of brass. In terms of finishes, trombones can be lacquered or plated with materials like silver or nickel to protect the brass from tarnishing and enhance its appearance.

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The reaction consumes methane gas (CH₄ ) at a rate of 2.07 M/s, so  the rate of formation of H₂.

The chemical equation for the given reaction is:

CH₄ + 2O₂ → CO₂ + 2H₂O

Here, methane gas (CH₄) is reacting with oxygen (O₂ to form carbon dioxide (CO₂) and water (H₂O). The reaction shows that 1 molecule of CH₄ reacts with 2 molecules of O2 to form 2 molecules of H₂O and 1 molecule of CO₂.

Let's calculate the rate of formation of H₂ using the rate of consumption of CH4 given in the question.Rate of consumption of CH4 = 2.07 M/s

According to the balanced chemical equation, 2 moles of H₂O are formed by the reaction of 1 mole of CH4.

So, 4.14 moles of H₂O are formed when 2.07 moles of CH4 is consumed by the reaction.

Hence, the rate of formation of H₂ = rate of formation of H₂O = (4.14/2) M/s = 2.07 M/s

Answer: 2.07 M/s

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Answer:

???????

Explanation:

The question is incomplete, the complete question is:

Standardization of a Borax solution (Na2B4O7). A student titrates a 20.00 mL sample of an aqueous borax solution with 1.044 M H2SO4. It takes 2.63 mL of acid to reach the equivalence point. Knowing it takes 1 H2SO4 to neutralize 2 Na2B4O7, what was the concentration of this Borax solution?

Answer: The concentration of borax solution is 0.069 M.

Explanation:

To calculate the concentration of borax solution, the formula used is:

\(n_1C_1V_1=n_2C_2V_2\) ....(1)

where,

\(n_1, C_1\text{ and }V_1\) are the n-factor, concentration and volume of sulfuric acid

\(n_2,C_2\text{ and }V_2\) are the n-factor, concentration and volume of borax solution.

We are given:

\(n_1=1\\C_1=1.044M\\V_1=2.63mL\\n_2=2\\C_2=?M\\V_2=20mL\)

Putting values in equation 1, we get:

\(1\times 1.044\times 2.63=2\times C_2\times 20\\\\C_2=\frac{1\times 1.044\times 2.63}{2\times 20}\\\\C_2=0.069M\)

Hence, the concentration of borax solution is 0.069 M.