Many hydrocarbons are:

sugars.
lipids.
common fuels.
plants.

Answer: c

Explanation: if you want to make sure just look it up

An enzyme-catalyzed reaction proceeds more quickly than an uncatalyzed reaction. The right answer is c).

Proteins called enzymes aid in increasing our bodies' chemical reactions, or metabolism. Whereas other enzymes are broken down, others are produced. A component of all living creatures is an enzyme. Enzymes are created by our bodies spontaneously. Enzymes are, however, found in both food & manufactured goods.

The vital function of enzymes is to reduce the activation energy of a reaction, or the amount of electricity needed for the process to start. Enzymes bind to host molecules to hold them together to aid in the formation and breaking of chemical bonds.

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The Complete Question :

Compared to an uncatalyzed reaction, an enzyme-catalyzed reaction

a) produces different products

b) requires a higher temperature

c) occurs at a faster rate

d) uses less substrate

e) requires more energy

Be: Loses 2 electrons, Se: Gains 2 electrons, I: Gains 1 electron, As: Gains 3 electrons.

The electron, a subatomic particle, has a negative fundamental electric charge. Electrons, the first generation of the lepton particle family, are often regarded as elementary particles due to their lack of known components or substructure. The mass of a proton is roughly equivalent to that of an electron. One of the quantum mechanical characteristics of the electron is its intrinsic angular momentum (spin), which is measured in terms of the reduced Planck constant. Because electrons are fermions, the Pauli exclusion principle asserts that no two of them may be in the same quantum state. Electrons have features in common with all elementary particles, including the ability to collide with other particles and experience optical diffractive effects. The wave properties of electrons are easier to observe experimentally than those of neutrons and protons because they have a smaller mass and a longer de Broglie wavelength for a given energy than these other particles do. Along with many other scientific phenomena including electricity, magnetism, chemistry, and thermal conductivity, electrons are involved in gravitational, electromagnetic, and weak interactions.

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Water molecules' propensity to attract other substances is known as adhesion.

Water molecules' interactions with one another are characterized by two qualities called cohesion and adhesion. and the interactions between water molecules and other things like leaves or even you. Cohesion is the tendency of water to adhere to itself. and adhesion denotes the propensity of water to adhere to other objects.

Electrostatic or mechanical forces between two different types of material produce adhesion. Van der Waals forces and hydrogen bonding both contribute to cohesion.

Ionic, covalent, or hydrogen bonds are formed between the surface atoms of two distinct surfaces when there is chemical adhesion. In this way, chemical adhesion follows a pretty simple engineering principle: if surface molecules can link, then a network of these bonds will bind the surfaces together.

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The most stable form of sodium, oxygen, calcium, and chlorine is found in the Lewis structure.

Lewis structures thus show the potential for bonding.

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The product of the enamine formed between acetophenone and dimethyl pyrrolidine, as a nucleophile, dimethyl pyrrolidine attacks the carbonyl in this situation to produce the enamine.

Secondary amines react with carbonyl compounds to produce enamines as a byproduct. The secondary amines pyrrolidine, piperidine, and morpholine are frequently used to create enamines. Enamines act as nucleophiles and cause an alkylation at a position corresponding to a carbon atom in the original carbonyl compound.

Due to the absence of the additional nitrogen atom required for imine formation, secondary amines form a distinctly different functional group following nucleophilic addition. A hydrogen atom is taken out of a carbon next to it during this reaction, creating a C=C bond.

Structure of the product of the enamine formed between acetophenone and pyrrolidine is attached below.

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Answer:

In Explanation

Explanation:

In a chemical reaction, the limiting reactant is the reactant that is completely consumed before any of the other reactants are used up. The amount of product that can be formed is determined by the limiting reactant, and the amount of the excess reactant left over after the reaction can be calculated.

To determine which reactant is the limiting reactant, we need to compare the stoichiometry of the reaction, which is the ratio of the reactants and products in a balanced equation.

The balanced equation for the reaction between ZnS and O2 is :

ZnS + O2 → ZnO + SO2

From the balanced equation, we can see that 1 mole of ZnS reacts with 1 mole of O2 to form 1 mole of ZnO and 1 mole of SO2.

Now we can compare the amount of ZnS and O2 that we have with the stoichiometry of the reaction.

1.82 moles of ZnS is enough to react with 1.82 moles of O2

But we have 3.94 moles of O2, which is more than enough to react with the 1.82 moles of ZnS

Therefore ZnS is the limiting reactant and O2 is the excess reactant.

Following are the effects of acid rain.

What is Acid Rain?

Acid rain is caused by the accumulation of nitric and sulfuric acids in the atmosphere. These compounds are strong acids and are very soluble in water, dissolving in droplets in clouds.

Limestone effect:

Calcium carbonate, [Ca][CO3], is a very common mineral. A limestone is a well-known form of calcium carbonate. The acid contained in acid rain reacts with carbonate ions and promotes the dissolution of calcium carbonate.

This will create a bicarbonate solution. The presence of limestone and other calcium carbonates in lakes and streams helps maintain a constant pH as the mineral reacts with excess acidity. However, acid rain can eventually exceed the buffering capacity of surface waters.

How does acid rain affect buildings made of marble and limestone?

It is mainly affected in 2 ways: dissolution and alteration. Calcite dissolves when sulfuric, sulfuric and nitric acids in polluted air react with calcite in marble and limestone. Exposed areas of buildings and statues show rough surfaces, worn materials, and loss of sculptural detail. Stoneface material can be lost anywhere or only in more reactive areas.

Hence, this is how acid rain affects.

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Answer:

To produce energy from food

Explanation:

It's pretty much an energy cycle

The answer choice which is an example of coloration as an adaptation to ensure survival include the following: D. all of these choices are correct.

In Science, natural selection can be defined as a biological process in which species of living organisms possess certain traits, qualities, and characteristics that enables them to successfully adapt to environmental factors, survive and reproduce, as well as passing on their genes to their offspring and subsequent (future) generation.

In Biology, coloration can be defined as the general appearance of a living organism based on the quality and quantity of light that is reflected or emitted from the surface of this living organism.

In conclusion, all of the aforementioned examples of coloration are an adaptation to ensure the survival of living organisms.

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Complete Question:

Which of the following choices is an example of coloration as an adaptation to ensure survival?

Zebras' stripes allow them to hide from predators in tall grasses

The viceroy butterfly mimics the coloration of the monarch, which has a bitter taste.

Different varieties of insects mimic plants, sticks, and snakes.

All of these choices are correct.

The chemical formula of ethanol is C₂H5OH. So according to the question, the number of carbon atoms, it will be twice the number of molecules, So it will be two times 7.65 Times 10 to about 23.

Intoxication with ethanol is frequent in older adolescents and adults. A child's toxic dose is 3 mg/dL, whereas an adult's hazardous dose is 5 mg/dL. Compared to adults, children are more likely to experience hypoglycemia after a single intake.

The boiling point of ethanol is relatively low. Water has a greater boiling temperature than ethanol because there is less hydrogen bonding between water molecules than between ethanol molecules, which requires less energy to vaporize.

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Answer:

299 mL/m

Explanation:

[tex](\frac{29.9L}{1 cm})(\frac{1000mL}{1L})(\frac{1 cm}{100 m}) = \frac{(29.9)(1000mL)}{100 m} = 299 mL/m[/tex]

Yes, it is adjust since when salute may be a break up when salute is broken down into the dissolvable, then it'll frame the arrangement, at that point it'll frame the arrangement. So it has changed the chemical property.

The dissolution of a solute in a dissolvable to create a arrangement does not include a chemical change (that it could be a physical alter). Disintegration of a solute in a dissolvable to create a arrangement does not include a chemical change.

Solvation, or disintegration, is the method by which a solute breaks up into a dissolvable.

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LiCl > KF > NaCl > NaBr is the cation-anion distance using the values of ionic radii given in the figure.

The ionic radius is defined as the distance between an ion's nucleus and its outermost shell. A cation's atomic size will be less than that of the parent atom. In a crystal lattice, the ionic radius is half the distance between atomic ions. Ions are considered as if they were hard spheres to calculate the value. On the periodic table, the size of an element's ionic radius follows a regular trend. The ionic radius rises as you proceed along a column or group. The internuclear distance between a cation and a nearby anion in a lattice is used to compute it.

Here,

Using the ionic radii values shown in the image, the cation-anion distance is LiCl > KF > NaCl > NaBr.

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Taking the length & width if your area, then putting those two figures together to obtain the size in feet squared, is how you compute a rectangle area (ft2). A typical sort of skin growth is called a mole.

A typical sort of skin growth is the mole (nevus). Clusters of purple cells are what cause them, which frequently manifest as tiny, dark brown spots (melanocytes). The majority of people possess 10 to 40 moles 1st form throughout adolescence and childhood and may change or disappear over time.

It takes 6.022 1023 units of a chemical to make up one mole . Avogadro's constant or Avogadro's constant are both designations for the number 6.022 1023. In order to convert between particle mass and number, the mole concept might be employed. Sal Khan is the author.

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Cyclohexanone (also known as oxocyclohexane, pimelic ketone, ketohexamethylene, cyclohexyl ketone or ketocyclohexane) is a six-carbon cyclic molecule with a ketone functional group.

The liquid cyclohexanone has a nice smell and is colourless to pale yellow in appearance. not as dense as water. 111 °F flash point. heavier than air vapours. utilised as a solvent, a chemical reaction media, and to produce nylon. A cyclic ketone called cyclohexanone is made up of cyclohexane with a single oxo group.

It serves as a xenobiotic metabolite for humans. Cyclohexanone is a six-carbon cyclic molecule having a ketone functional group. It is also known as oxocyclohexane, pimelic ketone, ketohexamethylene, cyclohexyl ketone, or ketocyclohexane.

It has an acetone-like scent and is an oily, colourless liquid. In heating systems, conductive liquids like boiler water and heat transfer fluids like morpholin are stabilised by morpholin. As a base that neutralises acid pollution in heat, morpholine serves as one of the main mechanisms by which it accomplishes this.

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Diffusion is the spontaneous movement, equations regarding diffusion of two gases, a and b like a into b or b into a or a and b into a container are as follows:-

1. Diffusion of gas a into gas b:

a (gas) → b (gas)

2. Diffusion of gas b into gas a:

b (gas) → a (gas)

3. Diffusion of gas a and gas b into a container with a partition:

a (gas) + b (gas) → a (gas) + b (gas) (on opposite sides of partition)

4. Diffusion of gas a and gas b through a membrane:

a (gas) + b (gas) → a (gas) + b (gas) (on opposite sides of the membrane)

5. Diffusion of gas a and gas b into a container without a partition:

a (gas) + b (gas) → mixture of a and b (gas)

It's worth noting that diffusion is the spontaneous movement of particles from an area of higher concentration to an area of lower concentration until equilibrium is reached.

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Question - complete each of the following equations regarding diffusion of two gases, a and b.

1. Diffusion of gas a into gas b

2. Diffusion of gas b into gas a

3. Diffusion of gas a and gas b into a container with a partition.

4. Diffusion of gas a and gas b through a membrane.

5. Diffusion of gas a and gas b into a container without a partition:

The final observation is that Iodine is deep-brown in color and is formed from a Single-Displacement reaction.

The substitution reaction is another name for the single displacement reaction. To create a new chemical compound in this reaction, one atom or molecule displaces or replaces the other atom or molecule.

Colorless metal halides are created when metals and halogens combine.

During an experiment, potassium iodide solution was mixed with bromine water.

Once bromine water is added to a potassium iodide solution, hydrobromic acid is generated as a result of the oxidation to iodate, which is characterized by a steep rise in conductivity and a reduction in pH.

After the test, it was observed that the potassium iodide solution, which had previously been colorless or clear, the solution's color changes to a shade of brown, which is the color of iodine.

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Answer: When bromine is added to potassium iodide solution, a slight change in the color of brown can be observed.

Explanation: Bromine is a powerful oxidizing agent and a displacement reaction of halogens occurs when it is added to potassium iodide. Ultimately, a reddish-brown solution appears.

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The balanced nuclear equation for the formation of ²⁰³Bi (83) through a decay is ²⁰⁷At(87) → ²⁰³Bi(83) + ⁴He(2)(alpha)

In nuclear fusion, nuclear fission, and radioactive decay, the reactants and products are represented by nuclear equations. Nuclear reactions show the conservation of atomic mass and proton number rather than the different number of elements as in chemical equations.

Nuclear reactions can be divided into three categories:

Nuclear fusion is the joining of two tiny atomic nuclei to form a single larger nucleus.

Nuclear fission is the division of an enormous atomic nucleus into smaller pieces.

The transformation of a less stable nucleus into a more stable nucleus is known as radioactive decay.

²⁰⁷At(87) → ²⁰³Bi(83) + ⁴He(2)( alpha )

final product mass = 243-4-0-4 = 235

final product atomic number = 95-2+1-2 = 92

hence final product 235U(92)Â.

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For Mg²⁺ chemical formula and the chemical name of the salt formed is Mg²⁺ + SO₄⁻ → MgSO₄ (Magnesium sulfate)

For NO₂⁻  chemical formula and the chemical name of the salt formed is K⁺ + NO₂⁻ → KNO₂ (Potassium nitrite).

The number of atoms in each element in a compound is revealed by the chemical formula. It includes the symbols for the atoms of each element found in the compound as well as a count of how many of each element there are overall in the form of subscripts.

Empirical, molecular, and structural formulas are the three categories of chemical formulas. The amount of each type of atom in a molecule is shown by its molecular formula, whereas the simplest whole-number relationship between the atoms in a compound is shown by its structural formula. The most straightforward whole-number relationship between the atoms in a compound is shown by empirical formulas.

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The range of the set of data given in the question above is 0.30 cm (Option D)

From the basic knowledge of statistics, we understood that the range of a given data is defined as the difference between the highest value and the lowest value in the data. This is written as follow:

Range = Highest value - lowest value

With the above formula, we can obtain the range of the data given in the question. Details below:

Range = Highest length - lowest length

Range = 8.5 - 8.2

Range = 0.30 cm

Thus, the range is 0.30 cm (Option D)

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According to the Beer-Lambert rule, a solution's concentration and absorbance have a linear relationship, allowing for solution concentration.

Beer's Law (Beer-Lambert Law) A solution's molar absorptivity and solute concentration both affect how much energy is absorbed or transmitted by the solution. A more concentrated solution absorbs more light than a more diluted one, to put it simply.

While Lambert's law claims that the absorbance and route length are directly related, Beer's law states that the amount of light absorbed is proportional to the solution concentration.

Beer Lambert law,

              equation, A= ∈bc

               symbol                name                          units

                 A                           absorbance                 no units

                 ∈                           molar absorbtivity            L/mol.cm

                 b                           path length                        cm

                 c                            concentration                   mol/L

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Matter is said to be made up of particles that are constantly moving. All particles have energy, but the energy has a variation depending on the temperature the sample of matter is in.

The kinetic energy of an object is the energy that it possesses due to its motion and is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.

All particles have energy and  in turn the phenomena determines whether the substance exists in the solid, liquid, or gaseous state. Molecules in the solid phase have the least amount of energy, while gas particles have the greatest amount of energy.

The temperature of a substance is a measure of the average kinetic energy of the particles.

With respect to the changes in particle motion, temperature, and kinetic energy when liquid chocolate is poured into a mold, we can say that a change in phase may occur when the energy of the particles is changed.

There are spaces between particles of matter of the chocolate. The average amount of empty space between the molecules gets progressively larger as the sample of matter moves from the solid to the liquid and gas phases. There are attractive forces between the chocolate molecules, and these become stronger as the particles move closer together.

In conclusion, the attractive forces are called intermolecular forces.

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Making Carboxylic Acids by Oxidation of Essential Alcohols or Aldehydes. Essential alcohols and aldehydes are regularly oxidized to carboxylic acids utilizing potassium dichromate(VI) arrangement within the nearness of weaken sulfuric corrosive.

Primary alcohols can be oxidized to make aldehydes and carboxylic acids; auxiliary alcohols can be oxidized to donate ketones.

The response of an liquor with carboxylic corrosive is called esterification.

Ethanol Oxidation Product At this point, we know that ethanol will experience an oxidation response with chromic corrosive acting as the oxidizing specialist to donate a carboxylic corrosive as the item.

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option d The two sigma bonds form between a hybrid sp orbital on Hg and a p orbital on Cl indicates the orbitals which  overlap to form the σ bonds in the following molecules. HgCl2

Sigma bonds are the most powerful type of chemical bond. They are established by atomic orbitals overlapping head-on. For diatomic molecules, sigma bonding is most simply defined to use the language and techniques of symmetry groups. When one s and one p orbital within the same main atom's outer shell combine to form two new equivalent orbitals, this is made reference to as sp hybridization. The recently created orbitals are recognised as sp hybridised orbitals. It produces linear molecules with a 180° angle.

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The 3.40 x 1022 formula units of table salt, NaCl, by converting is 6 grams.

The term solution is defined as the homogenous mixture of the solute and solvent.

In step 1

It is known that a value of "x" % (m/m) means:

"x" grams in 100 grams of solution

In step 2

Given

3.40 x 10²² formula units of table salt

NaCl mass in grams ?

In step 3

Now,

58.44g NaCl ------------ 100 g of solution

3.40 NaCl ------------- X

X = 3.40 NaCl x 100 g of solution/58.44 g NaCl

X = 5.81 g

= 6g approx.

Thus, The 3.40 x 1022 formula units of table salt, NaCl, by converting is 6 grams.

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Electrolysis is the process of dissolving ionic compounds into their constituent parts by running a direct electric current through the liquid form of the molecule.

A chemical process is a way of doing anything to alter one or more substances that are chemicals or chemical compounds. Such a chemical process necessitates a reaction that takes place and can happen naturally or be triggered by an external factor.

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Answer:

Explanation:

Benzoic acid is a weak acid and is slightly soluble in water. It will dissolve in cold water to a certain extent, but not completely. This can be detected by using litmus paper. Blue litmus paper will turn red when it comes into contact with an acidic solution, indicating the presence of benzoic acid. Therefore, it can be detected that benzoic acid will dissolve in cold water to a certain extent but not completely.

MnO4-(aq) would react with NaI in a basic solution. In an acidic solution, MnO4-(aq) will not react with NaI.

Acidic solution has a higher concentration of hydrogen ions, greater than that of pure water. Basic solution has a low H +, less than that of pure water.

The pH scale is used to indicate how acidic or basic solution is. It ranges from 0 to 14, where 7 is taken neutral. Anything less than 7 is classified as acid and above 7 is classified as base. pH scale is a logarithmic scale in which a substance with pH of 2 is 10 times more acidic than pH of 3.

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The substance in each of the following pairs would you expect to have larger dispersion forces are a) octane having larger dispersion forces b) HI having larger dispersion forces c) H₂Se having larger dispersion forces.

The temporary attractive force that results when two nearby atoms temporarily form dipoles because of the positions of their electrons is referred to as the London dispersion force. Another name for this force is an induced dipole-induced dipole attraction.

First, because there are more electrons in larger molecules, and because some of those electrons are less tightly bound and farther from the nucleus, making them more polarizable, larger molecules have stronger dispersion forces.

Second, because a more dispersed molecule has a larger surface area and more surface contact with other molecules, the dispersion forces are larger.

a) Ethane, C₂H₆ or octane, C₈H₁₈

Based on the structures of ethane and octane, octane is longer and less impact than ethane, since octane is more spread out hence octane having greater surface area has larger dispersion forces compared to  ethane

b) HCl or HI

Based on the periodic trend of atomic radius, HI is larger than Cl, therefore, HI is the larger molecule between the two. With this, HI has larger dispersion forces that HCl.

c) H₂O or H₂Se

Comparing the sizes of H₂O and H₂Se, H₂Se is larger than H₂O and has larger dispersion forces than H₂O.

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