Answer:c= 21 k=294 height= 6.2 volume= 0.78
In the following reaction, Ni2+ is acting as a(n) Ni2+ )6H2)NiH2062+ (ag) O oxidizing agent O Lewis acid O precipitating agent O solvent O ligand
In the following reaction, Ni2+ is acting as a lewis acid.
What is 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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A chemical reaction occurs when
H2O(g) forms H2O(l)
O2(g) forms O3(g)
O2(l) forms O2(s)
H2O(l) forms H2O(s)
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.
What are endothermic and exothermic reactions?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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The activation energy for the gas phase decomposition of 2-bromopropane is 212 kJ.
The rate constant at 694 K is . The rate constant will be
at 732 K.
In cases where the activation energy seems large, there are few effective collisions and the reaction proceeds slowly. the rate constant at 732 K is 6.06×10⁻⁴s⁻¹.
What is activation energy?Chemical processes like the combustion of gas in air or perhaps the combustion of oxygen or hydrogen gases are well known to us. Without providing the responding system with energy in some form, this cannot happen. Therefore, additional energy must be provided to the reactants so that they can reach the threshold energy.
This indicates that if a reaction's activation energy is low, lots of molecules have it, and there are plenty of effective collisions, the reaction will occur. The response moves along quickly. In cases where the activation energy seems large, there are few effective collisions and the reaction proceeds slowly.
ln(k1/k2)=−Ea/R(1/T2−1/T1)
k1= 9.41×10⁻⁴s⁻¹ at 694 K
Ea =212 kJ
substituting all the given values in the above equation, we get
ln(k1/k2)=−Ea/R(1/T2−1/T1)
k2=6.06×10⁻⁴s⁻¹ at 732 K
Therefore, the rate constant at 732 K is 6.06×10⁻⁴s⁻¹.
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Classify each nucleus as stable or unstable. Drag the appropriate items to their respective bins.
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.
The nucleus is where?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.
A nucleus contains how many atoms?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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Topic: Washing Machine Durability We wanted to test which brand of washing machine (Warp-pool, Sam's Sung, or GEE) was the most durable. Experiment(al) Design: For our experiment we bought three brand new Washing Machines. A Warp-pool, Sam's Sung, and a GEE. We loaded each washing machine with 50 clay bricks. We ran all of the washing machines at the same time, non-stop, and recorded how long it took each one to break down. We recorded that data in the Table 1. Data: Brand of Washing Machine Length of time till it stopped working Warp-pool 10 Days, 5 Hours and 3 minutes Sam's Sung 2 months, 13 hours and 52 minutes GEE 1 month, 2 hours, and 32 minutes. Question at position 3 3 10 points Question at position 3 Describe your reasoning for writing the claim that you did. Response Expectations: Write in complete sentences. Your response should be a few sentences in length. I should be able to understand your reasoning clearly.
The claim that "GEE washing machine is more durable than Warp-pool and Sam's Sung washing machines" is based on the experimental data gathered from the test. The data shows that the GEE washing machine was able to run for a longer period of time before breaking down, compared to the Warp-pool and Sam's Sung washing machines. With only 1 month, 2 hours, and 32 minutes of running time, GEE washing machine outlived the other two brands, which were able to run for 10 days, 5 hours, and 3 minutes and 2 months, 13 hours, and 52 minutes respectively. This indicates that the GEE washing machine is more durable and can withstand more wear and tear compared to the other two brands.
determine if either isomer of [fe(co)3cl3] is optically active.
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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How many grams of beryllium chloride must be added to .2 L of water to make a 0.030 M solution?
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.
What is molar concentration?
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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When ADP accumulates, what is the effect on the rate of metabolic chemical reactions?
Speeds them up
Slows them down
Has no effect
The accumulation of ADP (adenosine diphosphate) affects the rate of metabolic chemical reactions by slowing them down.
What is chemical reaction?
A chemical reaction is a process that leads to the transformation of one set of chemical substances to another. It involves the breaking and forming of chemical bonds, resulting in the formation of new substances with different properties. Chemical reactions are essential for many processes in nature, including respiration, digestion, and photosynthesis.
ADP is a by-product of the energy-producing reactions that take place in cells. This by-product can build up and inhibit the activity of enzymes involved in these metabolic reactions. Therefore, an accumulation of ADP can slow down the rate of metabolic chemical reactions.
However, the rate of metabolic chemical reactions can also be sped up by the presence of ADP. This occurs when the cellular metabolic processes become inhibited by the presence of ADP and require a boost to be activated again. In this case, the presence of ADP can activate enzymes and thus speed up the rate of metabolic chemical reactions.
In sum, the accumulation of ADP can either slow down or speed up the rate of metabolic chemical reactions, depending on the current state of the metabolic process.
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The table shows several useful salts formed from reactions between different acids and bases. In order, these salts are used to control dust on roads, absorb water in antiperspirants, disinfect materials, and detect radiation. Use the pattern shown in the table to answer the question.
Name of Salt Formula of Acid Formula of Base Formula of Salt
Magnesium chloride HCl Mg(OH)2 MgCl2
Aluminum nitrate HNO3 Al(OH)3 Al(NO3)3
Sodium bromide HBr NaOH NaBr
Lithium fluoride ? ? LiF
Which two formulas will correctly complete the table for lithium fluoride?
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.
What is acid-base reaction ?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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what property of a cathode ray is indicated when a magnet is brought near the tube?
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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Which of the following functional groups of an amino acid would be in the ionized state at high pH? O -CH3 O O II -CNH2 O -CH2-OH O O -С-ОН O -CH2
Three amino acids have basic side chains when the pH is neutral. These are histidine, lysine, and arginine (Arg). The ability of a molecule to function as an acid or base is influenced by functional groups that donate or take protons.
Only glutamine is a zwitterionic amino acid at pH 7. An amino acid's structure enables it to function as both an acid and a base at a certain pH level. At a certain pH level that differs from one amino acid to the next, almost all amino acids exist as zwitterions. Because the p- electron of the oxygen atom moving causes resonance in the carboxylate ion, carboxylic acids are easily ionized.
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correct option is (-COOH), A higher pH would cause the (-COOH) functional groups of an amino acid to be ionised. Proteins are made up of substances called amino acids.
Anion acid has two functional groups: an amino group (-NH2) and a carboxylic acid group (-cooH). They manifest as zwitter ions when the pH is neutral. The amino acid is protonated at low pH, which means it gains a proton or H+ at the NH 2 group. The solution is acidic at low pH levels and basic at high pH levels. The amino acid is deprotonated at high pH levels, which means it removes one proton or H+ from the carboxyl group. As a result, the carboxyl group is ionised at high pH while the amine group is ionised at low pH.
hence the appropriate choice is (-COOH).
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Which of the following will remove aniline from & solution of aniline in diethyl ether? A. aqueous KBr B. aqueous HCI C. aqueous NaOH D. aqueous MgSOa E. aqueous CH:CO-Na
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.
What compounds are soluble in diethyl ether?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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Modify the following molecules so that they show the form that is dominant at physiological PH. a) cadaverine (b) octopamine
Modification the cadaverine and octopamine molecules are attached below.
What purposes does cadaverine serve?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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Bromination of an alkene by N-bromosuccinimide (NBS) in the presence of light or peroxide is a radical reaction and produces an allylic bromide. For the following bromination of 3-methylcyclopentene, select the allylic bromides from the set at the right that would be products of the reaction.
Which structures are products of this reaction? (Select all that apply.)
O A
O B
O C
O D
O E
O F
O G
The structures A, B, C and D are allylic bromides that are products of the reaction. Hence, Option A, B, C, D is the correct answer. And Option E, F, G are not allylic bromides, they are not formed as products of the reaction.
The bromination of an alkene with N-bromosuccinimide (NBS) in the presence of light or peroxide is a radical reaction that occurs at the allylic position of the alkene. The allylic radical intermediate is formed by cleavage of the N-Br bond in NBS and attack of the radical on the alkene. This reaction generates an allylic bromides as the final product.
The structure of 3-methylcyclopentene is:
H3C CH2
\ |
CH CH2
/ |
H3C CH2
The structures A, B, C and D are allylic bromides that are products of the reaction.
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Consider the rate law below.
R=K[(CH3)3 CBr] [H₂0]⁰
What is the overall order of the reactants in this reaction?
00
1
02
03
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.
electrolysis of dilute NaOH solution
Answer:
At anode: 4OH−→2H2O+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)§
A sample of milk in water appears cloudy and displays the Tyndall effect. It does not settle over time. How would the milk mixture be classified?
A. homogeneous mixture (solution)
B. heterogeneous mixture (suspension)
C. colloid
The milk mixture can be classified as colloid if the sample of milk in water does not settle over time.The option is C
What is colloid?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 :
Sol – It is a suspension of minute solid particles in a liquid.Emulsion – It is a colloid between two or more liquid with one consisting a dispersion of another liquid.Foam – It consists of gas dispersed in solid or liquid.Aerosol – It consists of a minute liquid or solid particles in a gasTherefore 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 experiment shown schematically below, a beam of neutral atoms is passed through a magnetic field. Atoms that have unpaired electrons are deflected in different directions in the magnetic field depending on the value of the electron spin quantum number. In the experiment illustrated, we envision that a beam of hydrogen atoms splits into two beams. (a) What is the significance of the observation that the single beam splits into two beams? (b) What do you think would happen if the strength of the magnet were increased? (c) What do you think would happen if the beam of hydrogen atoms were replaced with a beam of helium atoms? Why? (d) The relevant experiment was first performed by Otto Stern and Walter Gerlach in $1921 .$ They used a beam of Ag atoms in the experiment. By considering the electron configuration of a silver atom, explain why the single beam splits into two beams.
In the experiment illustrated, we envision that a beam of hydrogen atoms splits into two beams:
The significance of the observation that the single beam splits into two beams is the experimental evidence for orbital angular momentum.The beam might appears earlier as the magnetic field strength increases.If the beam of hydrogen atoms were replaced with a beam of helium atoms, it will have no effect under a magnetic field, known as the diamagnetic effect. 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.What is diamagnetic effect?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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What happens to water removed from a flowback well?
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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Which of the following gives the correct possible values of l for n = 4?
0, 1, 2, 3
–4, –3, –2, –1, 0, 1, 2, 3, 4
0, 1, 2, 3, 4
The possible values azimuthal quantum number l for n = 4 are 0 to (n-1), that is from 0 to 4.
What are quantum numbers?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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What is the hybridization of the bold atom in CH3CO2−?
What is the hybridization of the underlined atom in ?
sp
sp2
sp3
sp3d
sp3d2
The bold atom in CH3CO2? has an sp3 hybridization. The bold atom in PH4+ is hybridized as sp2. In AlF3, sp3 is the hybridization of the atom in bold.
Describe an atom.An atom is a particular kind of material particle that makes up a chemical element. The core nucleus of an atom is surrounded by either a positively charged electron or a large number of negatively charged electrons. There could be neutrons, two rather large particles that make up the positively charged nucleus.
What led to Atom's shutdown?Even while the objective of growing the software maker community still exists, we have decided to forgo Atom in order to strengthen our commitment to providing efficient and dependable application development to the cloud utilizing Microsoft's Visual Code and GitHub Codespaces.
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State where metals are found in the periodic table.
Answer:
The metals are to the left of the line except for hydrogen because it is a nonmetal
Explanation:
A race car drives one lap around a race track that is 500 meters in length.
The displacement of the race car from the starting point is zero.
What is the displacement?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
Solids have a __________ shape and are not appreciably __________.
Select one:
a. sharp, convertible
b. indefinite, compressible
c. indefinite, incompressible
d. definite, compressible
e. definite, incompressible
Answer:
e. definite, incompressible
Genetic diversity is advantageous to a species because it:
leads to a smaller gene pool.
increases a species’ ability to adapt and survive.
decreases the number of organisms competing for resources.
makes organisms more susceptible to disease.
Answer:
increase a species ability to adapt and surviveExplanation:
hope this was helpful
your answer may include the following changes. select each of the changes that you included in your answer. heat the metal until it melts (physical change). attempt to react the metal with oxygen (chemical change). stretch the metal into a wire (physical change). attempt to react the metal with acid (chemical change).
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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In a reaction, 2-methylbutan-1-ol is oxidised by potassium
dichromate.
Name and draw (as displayed
formula) the two products of this reaction.
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:
Valence bond theory predicts that tin will use _____ hybrid orbitals in SnCl3-.
A) sp B) sp2 C) sp3 D) sp3d E) sp3d2
Answer:C
Explanation:
In paragraphs 11-16 of "Miss Brill," Mansfield includes the scene in which a young couple joins Miss Brill on her special bench. What is the significance of this scene? Select each correct answer. Miss Brill overhears their arguing and decides it is her role to interrupt and help them resolve their dispute. The story reaches its climax when Miss Brill realizes how others see her, and her sense of importance is destroyed. Miss Brill envisions the couple as the romantic heroes of the play she imagines all of them to be a part of The young couple takes the place of the old couple, just as younger generations replace older.
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:
The story reaches its climax when Miss Brill realizes how others see her, and her sense of importance is destroyed. Miss Brill envisions the couple as the romantic heroes of the play she imagines all of them to be a part of. What is the significance of this scene?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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Select the gas with the largest root-mean-square molecular speed at 25∘ C.
a) All the gases have the same root-mean-square molecular speed at 25∘ C
b) He
c) SF6
d) CO2
e) CH4
The gas with the largest root-mean-square molecular speed at 25∘ C is : b) He.
What is meant by gas with the largest root-mean-square?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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