Activity
In this activity, you will examine the difference between opinions, facts, theories, and laws. To do so, examine the table
below. Carefully read each example in the table before answering the questions thatfollow.

The chemical formula of salt can be easily understood from the formulas of the acid and base from which it is formed. The salt LiF is formed from the acid LiOH and HF.

An acid -base reaction is called neutralization reaction because, the acidity and basicity of the two compounds is vanishing. Neutralization reactions gives the product called salts.

Acids donate their protons to the base and bases donate their electrons to acids forming the salt.

Lithium fluoride is salt formed from the acid -base reaction of hydrofluoric acid and lithium hydroxide. the reaction can be written as:

LiOH + HF → LiF + H₂O

Hence. the two missing formulas are LiOH and HF.

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"The movement of the ribosome one codon toward the 3′ end of the mRNA" does NOT specifically require the hydrolysis of GTP.

Any chemical reaction in which a molecule of water breaks one or more chemical bonds is referred to as hydrolysis. The word refers to substitution, elimination, and solvation processes in which water serves as the nucleophile. A chemical process in which water is utilized to break down a substance; this is accomplished by introducing a water molecule across a covalent link in the component. A hydrolysis reaction is the dissolution of a salt of a weak acid or base in water. Strong acids can be hydrolyzed as well. For example, dissolving sulfuric acid in water yields hydronium and bisulfate.

Here,

"The migration of the ribosome one codon nearer the 3′ end of the mRNA" does NOT necessitate GTP hydrolysis.

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Modification the cadaverine and octopamine molecules are attached below.

Cadaverine protects cells under anaerobic conditions from starvation for inorganic phosphate, Pi, and is crucial for cell survival at acidic pH levels. It controls a number of processes in plants, including plant development and growth, cell signaling, stress response, and insect defense.

In insect nervous systems, octopamine serves as a neuromodulator, neurotransmitter, and neurohormone and causes the entire organism to "take dynamic action."

A substance that is organic and closely related to noradrenaline is octopamine. Invertebrates use octopamine as both a neurotransmitter and a hormone. Tyrosine is converted to tyramine by tyrosine decarboxylase as the first step in the synthesis of octopamine.

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Answer:

At anode: 4OH−→2H2​O+O2​+4e−

At cathode: 4H++4e−→2H2​

Explanation:In aqueous NaOH solution, on electrolysis, we have the reduction potential of  H+ is much more than Na+, so the reaction takes place (above)§

The milk mixture can be classified as colloid if  the sample of milk in water does not settle over time.The option is C

Colloid is a mixture in which one substance consisting of microscopically dispersed insoluble particles is suspended throughout another substance.

There are types of Colloids such as :

Therefore colloid is a mixture that has particles ranging between 1 and 1000 nanometers in diamete yet are still able to remain evenly distributed. Colloids are heterogeneous in nature.

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In the following reaction, Ni2+ is acting as a lewis acid.

A Lewis acid is a chemical species with an empty orbital that may accept an electron pair from a Lewis base to produce a Lewis adduct. A Lewis acid is thus any chemical that can receive a pair of nonbonding electrons, such as the H+ ion. In other words, a Lewis acid is an electron-pair acceptor. A Lewis base is any chemical that may give a pair of nonbonding electrons, such as the OH- ion. Accepting electrons is possible for an atom, ion, or molecule with an incomplete octet of electrons. Boron trifluoride (BF3) and aluminum fluoride are two examples (AlF3).

Here,

Ni2+ acts as a Lewis acid in the following process.

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In paragraphs 11-16 of "Miss Brill," Mansfield includes the scene in which a young couple joins Miss Brill on her special bench and the significance of this scene includes the following:

In this scene, we can see Miss Brill having a good time in the park but coming to realize soon enough that the couple who she admired and planned to listen to did not think kindly of her. This made the woman sad even as she walked down to her home.

Her sense of importance was dealt a blow in this case. In this story also, Miss Brill applied her ability to envision a joyful scene.

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The Lewis structure for GeBr4 is shown below. It has a total of 32 valence electrons, with 6 in the lone pairs and 26 in the bonds. The structure is a tetrahedral geometry, with the central Ge atom bonded to four Br atoms.

The Lewis structure, also known as the electron-dot structure, is a type of diagram used to represent the valence electrons of an atom. It shows the number of electrons surrounding an atom, as well as how they are arranged around the nucleus. The Lewis structure is used to predict the geometry of a molecule, the reactivity of the molecule, and the types of bonds that the molecule can form. It is also used to determine the formal charge of each atom in a molecule.

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The displacement of the race car from the starting point is zero.

We would need to be able to decipher the difference between the distance and the displacement because the understanding of this would help in the solution of the question.

We would have to know the the displacement is a vector while the distnace is a scalar as such, we would have to know the direction of the disolacement. If the car is moving round in a loop then it goes back to the starting point and the displacement is zero.

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Missing parts;

A race car drives one lap around a race track that is 500 meters in length. What is the displacement

Answer:

e. definite, incompressible

Beryllium having valency 2 reacts with a certain element to form a compound with the general formula BeX. Hence, KX is the most likely formula for the compound formed between potassium and element X.

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The gas with the largest root-mean-square molecular speed at 25∘ C is  : b) He.

The root mean square (R.M.S) speed V of the molecules of an ideal gas is given by the expression as , v=sqrt(3RTM) and v=sqrt(3KTm) where R is the universal gas constant, T is absolute (Kelvin) temperature, m is molar mass, K is Boltzmann's constant and M is molecular mass.

The root-mean square (RMS) velocity is the value of square root of the sum of squares of the stacking velocity values divided by number of values. RMS velocity is that of a wave through sub-surface layers of different interval velocities along specific ray path.

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A chemical reaction occurs when: H2O g → H2O l -- Exothermic ; O2(g) forms O3(g)-- Endothermic ; O2(l) forms O2(s)-- Endothermic and H2O(l) forms H2O(s) -- Exothermic.

When steam or water vapor condenses to liquid water, then heat is released. And, the process is called exothermic.

The substance changing from liquid to gas is an example of endothermic reaction. This is because it absorbs energy to change from liquid to gas. Movement of water from liquid to gas is an example of this type of reaction and when water changes from liquid to gas, this is called evaporation.

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According to molar concentration, 0.479 g of beryllium chloride must be added to 0 .2 L of water to make a 0.030 M solution.

Molar concentration is defined as a measure by which concentration of chemical substances present in a solution are determined. It is defined in particular reference to solute concentration in a solution . Most commonly used unit for molar concentration is moles/liter.

Molar concentration is calculated by the formula, molar concentration=mass/ molar mass ×1/volume of solution in liters.In terms of moles, it's formula is given as molar concentration= number of moles /volume of solution in liters.

Substituting values in above formula,mass=0.030×79.91×0.2=0.479 g.

Thus, the mass of  beryllium chloride  that must be added to 0.2 L of water to make a 0.030 M solution is 0.479 g.

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14 hydrogen bonds will be found within an alpha helix that is 18 amino acids long option - A is correct answer.

Hydrogen bonds between the peptide bonds keep the -helix in place. Four amino acid residues ahead of each peptide bond C-O is a peptide bond N-H that is hydrogen bonded. The main chain's hydrogen bonds each C-O and N-H together.

Two hydrogen bonds involve each peptide link in an alpha helix. Four units ahead in the primary structure, the N-H of the peptide link and the C=O are hydrogen bonded.

As a result, the first amino acid's C=O and the fifth amino acid's N-H form a hydrogen bond.

The second amino acid's C=O forms a hydrogen bond with the sixth amino acid's N-H.

The third amino acid's C=O forms a hydrogen bond with the seventh amino acid's N-H.

The 14th amino acid's C=O forms a hydrogen bond with the 18th amino acid's N-H.

So there are 14 hydrogen bonds in total.

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Answer:C

Explanation:

The possible values azimuthal quantum number l for n = 4 are 0 to (n-1), that is from 0 to 4.

Quantum numbers are numbers describing the position and energy of electrons in different orbitals of an atom. An electron have a set of four quantum numbers.

The four quantum numbers are principal quantum number, azimuthal quantum number, magnetic quantum number and spin quantum number. No two electrons will have a equal set of these numbers.

The principal quantum number n is indicating the main energy level. Azimuthal quantum number l can have values from 0 to n-1. Hence, for n =4, l have values from 0 to 3. Thus option 1 is correct.

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The longest isotope of tin is 126Sn, and it is also the most stable of the listed isotopes. All other isotopes contain 50 protons, making them unstable.

An electron cloud surrounds the nucleus, which contains four protons and five neutrons. Every atom has a nucleus in its center, as Ernest Rutherford discovered in 1911. Protons with positive electric charges and neutrons with no electric charges make up atomic nuclei.

Each atom has a single nucleus. In the middle of an atom is its nucleus. The atom's nucleus, which is tiny, dense, and positively charged, is essentially empty space.

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The particle beam's mass to charge ratio. JJ Thomson determined how the magnetic and electric fields affected the beam's deflection. argued that the mass of the particles and their electric charge would determine how much the beam would deflect.

More mass per particle results in more inertia and less deflection. Greater force and deflection result from higher particle charge. More speed results in less deflection. When charged matter is exposed to an electromagnetic field, its electric charge a property of matter causes it to feel a force. An electric charge can be either positive or negative (commonly carried by protons and electrons respectively). Like and unlike charges are attracted to one another while being repelled by the other. Neutral describes a thing without any net charge. Classical electrodynamics, a term coined to describe early understanding of the interactions of charged particles, is still applicable to issues that do not demand for taking quantum effects into account. Electric charge is a conserved property, which means that the total positive and negative charges in an isolated system, or its net charge, cannot change. Particles at the subatomic level carry an electric charge. In regular matter, the protons in atoms' nuclei carry positive charge whereas the electrons carry negative charge. A substance will have a negative charge if there are more electrons than protons in it; a positive charge will be present if there are fewer electrons; and a neutral charge will be present if there are an equal number of electrons and protons.

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Answer:

Explanation:

Alcohols can be oxidised by a variety of oxidising agents. Sodium or potassium dichromate acidified with dilute sulphuric acid can bring about oxidation in straight chained alcohols.

Answer:

2-methylbutan-1-ol is oxidised by potassium dichromate: 2-methylbutan-1-ol + [O] ==> 2-methylbutan-1-al + water CH3CH2CH(CH3) CH2OH + [O] ==> CH3CH2CH(CH3) CHO + H2O

Explanation:

An injection into a deep well may have issues if it contaminates the water below the surface.

Injecting waste water into subterranean rock layers can be challenging if there are numerous wells nearby. Take porous sandstone as an example, which has tiny openings. Sandstone can be penetrated by water at high pressure, such as waste water from fracking, which can also move with subsurface water. To inject fluid underground into porous geologic formations, an injection well is used. These underground features could be anything from a tiny layer of soil to substantial sandstone or limestone. Examples of injected fluids include water, wastewater, brine (salt water), and water that has been mixed with chemicals. The pollution that fracking sites release, which contributes to health issues including asthma, children leukemia, heart illnesses, and others, is one of the consequences of fracking that deeply worries me.

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It is possible for an electron to be free or linked to an atom. An electron is a negatively charged subatomic particle (not bound).

Unattached or attached to an atom, an electron is a negatively charged subatomic particle (not bound). One of the three main types of particles inside an atom, along with protons and neutrons, is an electron that is linked to the atom.

The tiniest and least massive component of an atom is an electron, which has a negative charge. In a neutral atom, the number of protons and electrons is equal. For instance, the hydrogen atom only contains one proton and one electron. While the uranium atom has 92 protons and, thus, 92 electrons.

The exterior of the nucleus is surrounded by negatively charged electrons in orbit.

Therefore, the correct answer is option d) 2p.

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Answer: The overall order of a reaction is the sum of the exponents of the concentrations of the reactants in the rate law.

Given the rate law R = K[(CH3)3 CBr] [H₂0]⁰, we can see that the reactant [(CH3)3 CBr] has an exponent of 1 and the reactant [H₂0] has an exponent of 0. To find the overall order of the reactants, we add the exponents:

1 + 0 = 1

Therefore, the overall order of the reactants in this reaction is 1.

In the experiment illustrated, we envision that a beam of hydrogen atoms splits into two beams:

Diamagnetism is a quantum mechanical effect that occurs in all materials. A material is said to be diamagnetic if it is the only contribution to magnetism. In paramagnetic and ferromagnetic materials, the weak diamagnetic force is overcome by the attractive force of the magnetic dipoles within the material .

(a) Hydrogen may split into two beams with magnetic spin quantum numbers of +1/2 and -1/2. So suppose a jet of hydrogen splits into two jets as it passes through the magnetic field. The significance of the observation is therefore the experimental evidence for orbital angular momentum.

(b) Already has two magnetic spin quantum numbers, so there is no change in the splitting of the ray as the magnetic field increases, but it only appears earlier as the magnetic field increases.

(c) Helium has an electron configuration of 1s² and an atomic number of 2. Because these electrons are paired, these paired electrons have no effect under a magnetic field, known as the diamagnetic effect.

(d) If we carry out experiments with silver with the electron configuration [Kr]4d¹⁰5s¹ and atomic number 47, there is one electron in the 5s orbital, splitting it into two possible magnetic spin quantum numbers, and the paramagnetic effect Indicates +1/2 and -1/2 or less of the magnetic field.

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Answer:

Explanation:

hope this was helpful

An amine called aniline (17) is soluble in diethyl ether but not in water; nonetheless, aniline can be obtained from diethyl ether by treating it with aqueous hydrochloric acid.

Diethyl aniline is an odourless, colourless to yellow liquid. It functions as a dyestuff intermediary and in organic synthesis. Diethyl aniline is listed as a hazardous substance because DOT, NFPA, and EPA have all mentioned it.

The amine aniline (17) may be separated from diethyl ether using aqueous hydrochloric acid, despite the fact that aniline is soluble in diethyl ether but not water.

The extensive range of chemical molecules, both polar and non-polar, that ethers like diethyl ether dissolve. Because ethers don't have a hydrogen bonding network that needs to be broken up to dissolve the solute, non-polar substances are often more soluble in diethyl ether than alcohols.

Therefore, the correct answer is option b) aqueous HCl.

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This complex's ligands, ammonia and chloride, are known as diamine silver (I) chloride.

An ion or molecule that gives a pair of electrons to the main metal atom or ion to create a coordination complex is known as a ligand. The Latin origin of the word ligand is "knot or bind," as in a binding. A ligand could be a neutral chemical, an ion, or a cation.

In a coordination complex, the atoms or molecules known as ligands attach to the central metal atom. Three categories of ligands—simple, complex, and coordinative unsaturation—can be used to categorize them.

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None of the isomers of [fe(co)3cl3]are optically active.

We need to check for symmetry in the isomers in order to determine whether they are optically active. They are either optically inactive if they have symmetry or optically active if they do not. The mirror image method and the symmetry method are the two options. For the mirror image approach, the isomer is optically active if the chemical is non-superposable, or not identical to its mirror image. There are two isomers of the compound [Fe(CO)3Cl3]: a fac and a mer. Since the two structures in the case of the fac isomer are the same, it has no optical activity. Since the mer isomer are identical, it is also not optically active. This demonstrates that there are no optically active isomers.

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The compounds that follow will show a noticeable peak at (M-127) are CH3CH2CH2I

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If there is change in size of the substance it shows physical change. For example, when we stretch the metal into a wire the size changes. If a substance combine with another to form a new substance is said to be chemical change.

A substance is said to be undergo physical changes if there is a change in the size or form of matter. This changes include transitions from one state to another such as from solid to liquid or liquid to gas. Cutting, bending, dissolving, freezing, boiling, and melting are some of the processes that create physical changes. If we heat the metal untill it melts a physical change occurs. If we stretch a metal into a wire is a physical change.

A substance is said to be undergo a chemical changes when it combines with another to form a new substance. This process is also called as chemical decomposition into two or more different substances. These are called chemical reactions. These are not reversible except by further chemical reactions. Attempt to react the metal with oxygen shows a chemical change. Attempt to react the metal with acid shows the chemical change.

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The physical and chemical changes are:

heat the metal until it melts (physical change) : The melt will melt.

attempt to react the metal with oxygen (chemical change) : Metal oxide will form.

stretch the metal into a wire (physical change) : Ductility

attempt to react the metal with acid (chemical change) : Acid will dissolve the metal.

Any solid that dissolves when heated behaves similarly. It melts, undergoing a physical transformation. When the mobility of the molecules in a solid accelerates to a point where it outweighs the attraction between the molecules, melting takes place.

Metal oxide is created when a metal combines with oxygen. This reaction's general equation is metal + oxygen = metal oxide. When iron is exposed to air, rust, a type of iron oxide, slowly forms.

Ductility is the quality of metals that allows them to be hammered thin or stretched into wire without breaking. It is a physical attribute of a metal that allows for the creation of thin wire.

The metal dissolves as a result of loosening the bonds binding the metal's atoms together. Acids' capacity to dissolve metals is a chemical attribute because that is a chemical change.

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