Which of the following is least like the others on the list?

a. Amino acid
b. Ribonucleic acid
c. Nucleic acid
d. Nucleotides

Iodination of benzene using I2 and CuCl2 yields iodobenzene.

Iodination is a reaction in which iodine is added to an aromatic ring. In the reaction just described, the iodine is believed to interact with cupric chloride to yield the I^+ electrophile which attacks the electron rich aromatic ring as shown.

The product is shown in the mechanism attached to this answer as the iodobenzene product is formed.

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The International Union of Pure and Applied Chemistry (IUPAC) provides a standard system for naming organic compounds.

It is essential to learn this nomenclature system to communicate correctly about the chemical structures of compounds and how they relate to each other. Here is the IUPAC name of the following substance.Below is the structure of the given compound: In the given compound, there are four carbon atoms that are connected with single bonds. Carbon atoms are also attached to hydrogen atoms. Since it has four carbons in the main chain, the root name will be "but-". The functional group present in the molecule is the carboxylic acid group (-COOH), which gives the suffix "-oic acid." Therefore, the IUPAC name of the given substance is Butanoic acid.Thus, the IUPAC name of the given compound is Butanoic acid. It is essential to know the IUPAC naming of organic compounds to communicate correctly about the chemical structures of the compounds.

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Answer:

The magnification is 10x

Explanation:

Answer: The magnification of the eyepiece on the microscope is the lens at the top of the microscope that the user looks through. This lens most commonly magnifies a sample by 10x

Explanation: The eyepiece magnifies the primary image produced by the objective; the eye can then use the full resolution capability of the objective. The microscope produces a virtual image of the specimen at the point of the distinct vision.

Answer:

navier

JAJDKEKWNEHSJJXIDJ (i need to do that so i can post the answer haha)

Answer: TEAM NAVIER FOR LIFEEEE

IF U SUPPORT TRASHTA, I HAVE NO WORDS TO DESCIRBE YOU

Answer:

Answer is no because,

Explanation:

Iodine is LESS REACTIVE than the elements above it in group 17 (fluorine, chlorine and bromine) it still forms compounds with many other elements. Although iodine is a non-metal, it displays some METALLIC properties. Xenon is one of the inert or noble gases and is odorless, colorless, tasteless and chemically NON REACTIVE

PLEASE MARK BRAINLIEST

Answer:

Explanation:

a) For a first-order reaction, the rate of the reaction is proportional to the concentration of the reactant, i.e., rate = k[A]. The integrated rate law for a first-order reaction is given by:

ln([A]t/[A]0) = -kt

where [A]t is the concentration of the reactant at time t, [A]0 is the initial concentration, k is the rate constant, and t is time.

If a reaction is 50% complete in 30.0 min, it means that [A]t/[A]0 = 0.5. Substituting these values into the equation above, we can solve for the rate constant:

ln(0.5) = -k(30.0 min)

k = 0.0231 min^-1

Now, if the reaction is 75% complete, it means that [A]t/[A]0 = 0.25 (since 50% is half of the initial concentration and 75% is a quarter of the initial concentration). Substituting this value and the rate constant into the equation above, we can solve for the time t:

ln(0.25) = -0.0231 min^-1 * t

t = 61.3 min

Therefore, for a first-order reaction, the reaction will be 75% complete after 61.3 min.

b) For a zero-order reaction, the rate of the reaction is independent of the concentration of the reactant, i.e., rate = k. The integrated rate law for a zero-order reaction is given by:

[A]t = -kt + [A]0

where [A]t is the concentration of the reactant at time t, [A]0 is the initial concentration, k is the rate constant, and t is time.

If a reaction is 50% complete in 30.0 min, it means that [A]t = 0.5[A]0. Substituting these values into the equation above, we can solve for the rate constant:

0.5[A]0 = -k(30.0 min) + [A]0

k = 0.0167 M/min

Now, if the reaction is 75% complete, it means that [A]t = 0.25[A]0. Substituting this value and the rate constant into the equation above, we can solve for the time t:

0.25[A]0 = -0.0167 M/min * t + [A]0

t = 45.0 min

Therefore, for a zero-order reaction, the reaction will be 75% complete after 45.0 min.

Answer:

a and b

Explanation:

Opals are formed when water in oceans dribble through the Earth, picking up silica from sandstone along the way. And really, that only happens when the ocean water touches the land.

Answer:

Both reactions are acid-base reactions

Explanation:

An acid base reaction is a reaction that occurs between an acid and a base. This reaction often leads to the formation of a salt in the process. The nature of the salt depends on the type of acid and base that reacted in the process.

Both HNO3 and H2SO4 are strong acids. However, ammonia is a weak base. The acid base reaction between ammonia and these strong acids is shown below;

HNO3(aq) + NH3(aq) ------>NH4NO3(aq)

H2SO4(aq) + 2NH3(aq) ----> (NH4)2SO4(aq)

The property X is an extrinsic property.

The term extensive property refers to the type of property that depends on the amount of the substance present. We must recall that an intensive property does not in any way depend on the number or the amount of the substance present in the sample.

If we have a good look at the table that is being referred to here, we would see that the mass of the substance tends to increase as a certain un named property of the substance X is increasing. This implies that the property X is affected by the mass of the object which is the quantity of matter in the object. This gives us an idea that the property that we are referring to can not be an intrinsic  property since it varies with the mass of the substance that is under study as shown.

We can then conclude that the property X is an extrinsic property.

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Missing parts;

Carrie measured mass and another property, X, of three pure samples of the same compound. She recorded her data in the table. Which of the following best describes property X?

A. X  is an intensive property because it does not vary with the size of the sample.

B. X is an extensive property because it does not vary with the size of the sample.

C. X is an extensive property because it varies directly with the size of the sample.

D. X is an intensive property because it varies directly with the size of the sample.

Answer:

1) first order

2) second order

3) zero order

Explanation:

The curve of a first order reaction shows it to be exponential. In fact for a first order reaction, the concentration at a time t is an exponential function;

[A]t= [Ao] e^-kt

Where

[A]t = concentration at time =t

[Ao]= initial concentration

k= rate constant

t= time

For a second order reaction, the rate of reaction is directly proportional to the concentration of reactants.

For zero order reactions, rate of reaction is independent of concentration hence rate = k(rate constant)

The concentration data has been required for the determination of the rate of reaction. Based on the concentration of reactant and product, the rate has been determined.

1. For the first-order reaction, there has been an exponential increase in the rate of the reaction with the increase in the reactant concentration. The rate has been dependent on the concentration of the reactant.

Thus the correct option is A.

2. Irrespective of the first-order kinetic, in the second-order reaction, the rate of reaction has been directly proportional to the concentration of the reactant in the solution.

Thus option B is correct.

3. The zero-order reaction has been independent of the concentration of the reactant. The rate of reaction has been constant with an increase in the reactant concentration.

Thus option C is correct.

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The isoelectric point (pI) is the pH at which an amino acid or protein.

Functional groups of amino acids in enzymes present have the ability to readily ionize. other amino acids which have ionizable side chains. These include arginine, aspartic acid, cysteine, glutamic acid, histidine, lysine and tyrosine.

There are basically four different classes of amino acids determined by different side chains: (1) non-polar and neutral, (2) polar and neutral, (3) acidic and polar, (4) basic and polar. Principles of Polarity: The greater the electronegativity difference between atoms in a bond, the more polar the bond.

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Answer:

Theoretical yield is 2.92g TiO₂

Explanation:

The reaction of Ti with O₂ to produce TiO₂ is:

Ti + O₂ → TiO₂

First, we need to find moles of titanium and oxygen. As the reaction is 1:1, we can determine directly the limiting reactant, the theoretical moles of TiO₂ and thus, theoretical yield:

Moles Ti (molar mass: 47.867g/mol):

1.75g * (1mol / 47.867g) = 0.03656 moles Ti

Moles O₂ (molar mass: 32g/mol):

1.25g * (1mol / 32g) = 0.0390 moles O₂

That means only 0.03656 moles of Ti will react withe 0.03656 moles of O₂ producing 0.03656 moles of TiO₂

As molar mass of TiO₂ is 79.866g/mol, the theoretical yield of the product is:

0.03656 moles TiO₂ * (79.866g / mol) = 2.92g TiO₂

The theoretical yield of the reaction of titanium and oxygen has been 2.92 grams.

The balanced reaction for the reaction of Titanium with oxygen can be given as:

\(\rm Ti\;+\;O_2\;\rightarrow\;TiO_2\)

According to the balanced equation, 1 mole of Ti gives 1 mole of Titanium oxide.

The moles of Ti can be given as:

Moles = \(\rm \dfrac{mass}{molecular\;mass}\)

The molecular mass of Ti has been 47.867 grams.

Moles of Ti has been:

Moles of Ti = \(\rm \dfrac{1.75}{47.867}\)

Moles of Ti = 0.036 mol.

Moles of Oxygen has been:

Moles of oxygen = \(\rm \dfrac{1.25}{32}\)

Moles of oxygen = 0.0390 mol.

The moles of Ti has been less than the required moles of Ti for the complete utilization of oxygen, thus titanium has been the limiting reactant.

1 mole of Titanium = 1 mole of titanium oxide

0.036 mol of Titanium = 0.036 mol of titanium oxide

The mass of 0.036 mol titanium oxide has been:

Mass = moles × molecular weight

Mass of titanium oxide = 0.036 mol × 79.866 g/mol

Mass of titanium oxide = 2.92 grams.

The theoretical yield of the reaction of titanium and oxygen has been 2.92 grams.

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Answer:

Explanation:

a )

Average reaction rate between 0 and 1500s

Time duration = 1500 s

moles reacted = .184 - .016 = .168 moles

Moles reacted per second = .168 / 1500

= 112 x 10⁻⁶ moles /s

b )

Average reaction rate between 200 and 1200s

Time duration = 1000 s

moles reacted = .129 - .019 = .11 moles

Moles reacted per second = .11 / 1000

= 110 x 10⁻⁶ moles /s

c )

the instantaneous rate of the reaction at t=800s

We shall assume that between 500 s and 1200 s , rate of reaction is uniform

rate between 500 and 1200

Time duration = 700 s

moles consumed = .069 - .019 = .05 moles

Rate of reaction = .05 / 700

= 71 .4 x 10⁻⁶ moles / s

This will also be instantaneous rate of reaction at t = 800 s .

Explanation:

Force=mass *acceleration

F=300*5

f

F=1500N

2 moles of water produces from 2 moles of hydrogen and 1 moles of oxygen. 2 molecules of water produces from 2 molecules of hydrogen and 1 molecules of oxygen. 2 liters of water produces from 2 liters of hydrogen and 1 liter of oxygen

Water is a substance that exists in gaseous, liquid, & solid phases and is made up of chemical components such as hydrogen and oxygen. Of the most prevalent and necessary substances is it. a liquid that is flavourless and odourless at normal temperature.

It has the critical capacity to dissolve a wide variety of other compounds. In fact, living things depend on water's adaptability as a solvent. It is thought that life first appeared in the water-based solutions of the oceans of the earth.

2H\(_2\)(g) + 0\(_2\)(g) → 2H\(_2\)O(g)

2 moles of water produces from 2 moles of hydrogen and 1 moles of oxygen

2 molecules of water produces from 2 molecules of hydrogen and 1 molecules of oxygen

2 liters of water produces from 2 liters of hydrogen and 1 liter of oxygen

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Answer:

A Reaction

3. Pt(NO₃)₂(aq) + Cu(s)

4. Cr(s) + H₂SO₄(aq)

B Non Reaction

1. Mn(s) + Ca(NO₃)₂(aq)

2. KOH(aq) +  Fe(s)

Y > Q > W > Z > X

Explanation:

The first question is whether a reaction will occur base on the chemical equation below.

1. Mn(s) + Ca(NO₃)₂(aq)

2. KOH(aq) +  Fe(s)

3. Pt(NO₃)₂(aq) + Cu(s)

4. Cr(s) + H₂SO₄(aq)

Firstly, some element are more reactive than others , base on this criteria element can be arranged  base on it reactivity .

1. Mn(s) + Ca(NO₃)₂(aq)

This reaction will not occur because Mn cannot displace Ca in it compound. Usually, more reactive element displaces less reactive element.

2. KOH(aq) +  Fe(s)

The reaction will not occur since Iron is less reactive and lower in the reactivity series than potassium . So iron won't be able to displace potassium.

3. Pt(NO₃)₂(aq) + Cu(s)

Copper is more reactive than platinum so it will displace platinum easily . The reaction will definitely occur.

4. Cr(s) + H₂SO₄(aq)

Chromium is higher up in the reactivity series than hydrogen so, it will definitely displace hydrogen in it compound . The reaction will occur in this case.

Base on the reaction

Q + W+ Reaction occurs

Since the reaction occurred element Q is more reactive as it displace element w from it compound.  

X + Z+ No reaction

No reaction occurred because element x is less reactive than z therefore, it cannot displace z from it compound.

W + Z+ Reaction occurs

Element w is more reactive than z as it displaces z form it compound.

Q+ + Y Reaction occurs

Element Y is more reactive than element  Q as it displaces Q from it compound.

Therefore, the  order of reactivity from the most reactive to the least reactive will be Y > Q > W > Z > X

A. The beakers in which a chemical reaction will occur:

3. Pt(NO₃)₂(aq) + Cu(s)

4. Cr(s) + H₂SO₄(aq)

B. The beakers in which there is no reaction:

1. Mn(s) + Ca(NO₃)₂(aq)

2. KOH(aq) +  Fe(s)

C. The elements from most reactive to least reactive is:

Y > Q > W > Z > X

A.

1. Mn(s) + Ca(NO₃)₂(aq)

2. KOH(aq) +  Fe(s)

3. Pt(NO₃)₂(aq) + Cu(s)

4. Cr(s) + H₂SO₄(aq)

Elements can be arranged on the basis of reactivity:

1. Mn(s) + Ca(NO₃)₂(aq)

This reaction will not occur because Mn cannot displace Ca in it compound. Usually, more reactive element displaces less reactive element.

2. KOH(aq) +  Fe(s)

The reaction will not occur since Iron is less reactive and lower in the reactivity series than potassium . So iron won't be able to displace potassium.

3. Pt(NO₃)₂(aq) + Cu(s)

Copper is more reactive than platinum so it will displace platinum easily . The reaction will definitely occur.

4. Cr(s) + H₂SO₄(aq)

Chromium is higher up in the reactivity series than hydrogen so, it will definitely displace hydrogen in it compound . The reaction will occur in this case.

According to reactions:

Q + W→ Reaction occurs

Since the reaction occurred element Q is more reactive as it displace element w from it compound.  

X + Z →No reaction

No reaction occurred because element X is less reactive than Z therefore, it cannot displace z from it compound.

W + Z→ Reaction occurs

Element W is more reactive than Z as it displaces Z form it compound.

Q + Y →Reaction occurs

Element Y is more reactive than element Q as it displaces Q from it compound.

Thus, the order of reactivity from the most reactive to the least reactive will be: Y > Q > W > Z > X

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Answer:

The field protects life on our planet because it deflects charged particles fired from the sun known as 'solar wind'..

Explanation:

Answer:

D) Repeating units.

Explanation:

Polymers are large macromolecules which are made up of many repeating structural units called monomers :)

i don't remember yeah yosj

The main difference between the Eubacteria and Archaebacteria kingdoms and the protista, fungi, plantae, and animal kingdoms is that Eubacteria and Archaebacteria are prokaryotes, while protista, fungi, plantae, and animal kingdoms are eukaryotes.

In the six kingdoms of classification, there are Eubacteria, Archaebacteria, Protista, Fungi, Plantae, and Animalia. The Eubacteria is a prokaryote, and its cell membrane is made up of peptidoglycan, teichoic acid, etc. Archaea are also prokaryotes, but their cell membrane composition differs from that of bacteria, so they are classified separately.

The eukaryotes are further classified into protista, fungi, plantae, and animalia depending upon their feeding patterns, complexity, etc. Protists may be unicellular or multicellular. Plants are autotrophs, fungi and animals are heterotrophs.

Eubacteria and Archaebacteria are examples of prokaryotes, whereas protists, fungi, plantae, and animals are examples of eukaryotes.

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Answer:

Bromine

Mercury

Bromine (symbol Br and atomic number 35) is a reddish-brown liquid, with a melting point of 265.9 K. Mercury (symbol Hg and atomic number 80) is a toxic shiny silvery metal, with a melting point of 234.32 K.

If you're attempting to synthesize 2 benzyl pentanoic acid from acetoacetic ester, keep in mind that you can do so fairly quickly by following these simplified instructions:

From its pungent free scent to its solid state at temperatures ranging from 118 120°C, acetoacetic ester (better known as ethyl acetoacetate) offers significant value for those working within organic synthesis.

As one of many potent ketones utilized by researchers around the globe its unique properties make it ideal for building complex molecules essential for modern medicine and more.

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The Kc is 2.8 * 10^24

In chemistry, Kp usually refers to the equilibrium constant of a reaction that involves gases. It is defined as the ratio of the partial pressures of the products to the partial pressures of the reactants, each raised to the power of their stoichiometric coefficients.

Kp= Kc (RT)^Δn

Thus;

Kc = Kp/(RT)^Δn

Kc = 2.24 × 10²² /(0.082 * 1546)^-1

Kc = 2.8 * 10^24

Thus the Kc of the reaction when we consider the concentration of the reactants is  2.8 * 10^24

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Answer:

To find the molar mass of BeCo3, we need to find the atomic masses of each element and add them together in the correct ratio:

Be: 9.01 g/mol

Co: 58.93 g/mol

O: 16.00 g/mol (there are three oxygen atoms)

Molar mass of BeCo3 = (1 x Be atomic mass) + (1 x Co atomic mass) + (3 x O atomic mass)

Molar mass of BeCo3 = (1 x 9.01 g/mol) + (1 x 58.93 g/mol) + (3 x 16.00 g/mol)

Molar mass of BeCo3 = 9.01 g/mol + 58.93 g/mol + 48.00 g/mol

Molar mass of BeCo3 = 115.94 g/mol

Therefore, the molar mass of BeCo3 is 115.94 g/mol.

Answer:  Jean Baptiste de Lamarck is a famous biologist known for his theory of evolution. While he is known for his theory of inheritance of acquired characteristics, he also proposed a theory of needs to explain the evolutionary process.

According to Lamarck's theory of needs, animals have specific needs that arise due to changes in their environment. For example, if an animal lives in an area with tall trees, it may need to stretch its neck to reach the leaves for food. Over time, Lamarck believed that this need would cause the animal's neck to lengthen, and this acquired trait would be passed down to its offspring.

One example of Lamarck's theory of needs can be seen in the evolution of the giraffe. Lamarck proposed that the giraffe's long neck evolved due to a need to reach high branches for food. According to his theory, over time, the giraffe's neck lengthened as a result of this need, and this acquired trait was passed down to future generations, eventually resulting in the long-necked giraffes we see today.

However, it is important to note that Lamarck's theory of needs has been largely discredited in modern evolutionary theory, which relies on the principles of natural selection and genetic mutation to explain the process of evolution.

Explanation: i would reallyyyyyyy apreciate brainliest

To draw a Bohr Rutherford diagram for carbon-12, we would have the symbol C in the center, with 2 electrons in the first energy level and 4 electrons in the second energy level, arranged in pairs. Each energy level would be represented by a circle around the nucleus, with the appropriate number of electrons placed in the circles.

A Bohr Rutherford diagram is a visual representation of the electron arrangement in an atom. Carbon-12 has 6 protons and 6 neutrons, which means it has 6 electrons as well since it is a neutral atom. In a Bohr Rutherford diagram, the nucleus is represented by the symbol for the element and the protons and neutrons are shown as small circles inside the symbol. The electrons are represented as dots or circles around the symbol, in the order of increasing energy levels.

In the case of carbon-12, the first energy level can hold a maximum of 2 electrons, and the second energy level can hold a maximum of 8 electrons. Therefore, the first energy level will have 2 electrons, and the remaining 4 electrons will go in the second energy level.

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To calculate the density of an object, you would need to know the mass and volume of the object.

The density of an object is the ratio of the mass of the object to that of its volume.

In other words, density = mass/volume.

Thus, in order to calculate the density of an object, both its mass and its volume must be known or given.

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To determine the number of moles in each substance, we need to divide the mass of the substance by its molar mass.

67.42 g Si:

The molar mass of Si is 28.0855 g/mol (rounded to 4 decimal places). Therefore, the number of moles of Si is:

67.42 g / 28.0855 g/mol = 2.3992 mol (rounded to 4 decimal places).

11.82 g gold:

The molar mass of gold is 196.9665 g/mol (rounded to 4 decimal places). Therefore, the number of moles of gold is:

11.82 g / 196.9665 g/mol = 0.060 mol (rounded to 3 decimal places).

28.8 g Br₂:

The molar mass of Br₂ is 159.808 g/mol (rounded to 3 decimal places). Therefore, the number of moles of Br₂ is:

28.8 g / 159.808 g/mol = 0.1803 mol (rounded to 4 decimal places).

Therefore, the number of moles in each substance is:

2.3992 mol Si

0.060 mol gold

0.1803 mol Br₂.

Answer:

has a positive chargeExplanation:

An atom is an indivisible particle and it is composed of mainly three sub atomic particles, they are protons, electrons and neutrons. The proton has a positive charge. The correct option is B.

The particles which are smaller in size than an atom are defined as the subatomic particles. The positively charged subatomic particles are called the protons whereas the negatively charged particles are called electrons and neutrons are chargeless.

It is the protons and neutrons which together make up the nucleus of an atom and hence they are called the nucleons. The number of protons or electrons in an atom is known as the atomic number and the mass of proton is 1.676 × 10⁻²⁴ grams.

It was Rutherford who discovered the protons and the charge of proton is  + 1.602 × 10⁻¹⁹ Coulombs.

Thus the correct option is B.

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Answer: 14.0

Explanation: 14.0 is a base. The more basic, the less hydrogen ion concentration.