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Na2CO3 will have highest pH as it is alkaline in nature

in hypotonic solution the solvent is more than solute but it hypertonic solution solute is more than solvent

When a solute is mixed with a solvent. The mixture is called solution.Eg: saltwater✌️

asolutionis a special type of homogeneous mixture composed of two or more substances. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent.

Simple permanent tissues are of three types: Parenchyma, Collenchyma, and Sclerenchyma. Parenchyma is two types

Chlorenchyma

Aerenchyma.

solution is a homogeneous mixture of one or more solutes dissolved in a solvent.

solvent: the substance in which a solute dissolves to produce a homogeneous mixture

solute: the substance that dissolves in a solvent to produce a homogeneous mixture

Note that thesolventis the substance that is present in the greatest amount.

Many different kinds of solutions exist. For example, a solute can be a gas, a liquid or a solid. Solvents can also be gases, liquids or solids.

The following figures show the microscopic behavior of several different kinds of solutions. Note that in each case, the solute particles are uniformly distributed among the solvent particles

it is a liquid what we missed one liquid to an another liquid like copper liquid mixed with the copper in turns to the greenish colour

Calculation of Molality :

Mass of ethylene glycol = 222.6 (Given)

Molar mass of ethylene glycol [C2H4(OH)2]

= 2 X 12 + 6 x 1 + 2 x 16

= 62

Therefore moles of ethylene glycol

= 222.6g/62 gmol-1

= 3.59 mol

Mass of water = 200g (Given)

Therefore molality of the solution is = (moles of ethylene glycol/mass of water) x 1000

= (3.59/200) x 1000

= 17.95 m

Calculation of Molarity:

Moles of ethylene glycol = 3.59 mol (already calculated)

Total Mass of solution = 200 + 222.6

= 422.6g

Volume of solution = mass / density volume

= 422.6/1.072

= 394.22 ml

now molarity of the solution is = (moles of ethylene glycol/volume of solution) x 1000

= (3.59/394.22) x 1000

= 9.11 M

an electrolyte is a solution basically conduction of electricity in an electrolyte occurs through ionsand consists of transfer of materials. so it's a chemical change

whereas in a metal conduction of electricity is due to flow of electrons and there is no chemical change.

option C is the answer.Carbon tetrachlorideneither dissociates into ions nor induces ion formation in the solvent. The reason is that the C − C l bond is rather strong and won't break under normal solution conditions.

Weak Electrolyte Examples. HC2H3O2(acetic acid), H2CO3(carbonic acid), NH3(ammonia), and H3PO4(phosphoric acid) are allexamples ofweak electrolytes.Weakacids andweak bases areweak electrolytes.

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The limitingmolar conductivityof a weak electrolytecannot be determined reliably byextrapolation. Instead itcan be expressed as a sum of ionic contributions whichcanbe evaluated from the limitingmolar conductivities of strongelectrolytescontaining the same ions.

No. of moles in 6.023× 10²¹ atoms is

= 6.023× 10²¹/6.023× 10²³ = 1/100 = 0.01 moles

and 1 moles of zinc has mass = 65.4gm

so, 0.01 moles will have mass = 0.01*65.4 = 0.65gm.

option 1.

A mole corresponds to the mass of a substance that contains 6.023 x 1023particles of the substance. The mole is the SI unit for the amount of a substance. Its symbol is mol. By definition: 1 mol of carbon-12 has a mass of 12 grams and contains 6.022140857 x 1023of carbon atoms

Using Planck's formula,E=hc/wwhere w is the wavelength,3*10^(-12) = 6.62*10^(-27) * 3*10^10 / ww = 6.62*10^(-5) cm = 662 nm.

Hope it helps.Mark as best if I am correct.

662nm is the right answer

by E=HC/W622nm answer

622nm is the correct answer of this problem

622nm is the correct answer

CH3CH2CNCH3CHCH2NH2CH3CH2CH2OH +N2

Sulphuric acid isachemicalof majorindustrial importance. Itisdifficult to imagine life without it since itisused at some stage in the manufacture of a vast array of materials. For example, itisused to make fibres,chemicals, paints, detergents, fertilisers and dyes....

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At standard conditions, 1 liter of air at 21% oxygen possesses 0.21 L of oxygen. Since at STP 1 mole of gas occupies 22.4 L, simply divide 0.21/22.4, to arrive at 0.0094 moles of oxygenOption b is correct

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(i)The reaction is homogeneous as all the components are gases.

(ii)an exothermic reaction has a negative enthalpy so this is an exothermic reaction

Ahydrometerorareometeris an instrument that measures the specific gravity (relative density) of liquids

option A is correct.

Solution:(CH3)2NH amine does not give carbylamine reaction

Explanation:Dimethylamine is a secondary aliphatic amine.Secondary and tertiary amines do not react to carbylamine test.

option (c) is correct.

The given chemical reaction is Decomposition reaction

Decomposition reaction : It is a type of chemical reaction in which one larger molecule decomposes into two or more molecules. For Example : AB ---> A+B

Conductorsare the substances which allow the electricity to pass through them whileinsulatorsresist electricity. Aconductoris something which allows electric current to flow through it freely whereas aninsulatorprevents any electric current flowing through it.

(a) Gold is the most malleable metal(b) Osmium(c) Platinum(d) Sodium(e) Copper(f) mercury

Waterseeps out through them and evaporates from the surface of the pot. ... Itisbecause In an earthen pot,water getsevaporated quickly through the pores.Cooling iscaused by evaporation. Some heat energyisutilised during the process of evaporation.

this process has taken place due to the process of evaporation

We know that for every single bond there's 1 sigma bond, for every double bond there's 1 sigma bond and 1 pi bond, and for every triple bond we have 2 pi bonds and 1 sigma bond. Looking at the Lewis structure of benzoic acid, we have 4 double bonds; therefore we have 4 pi bonds. After carefully counting the number of total bonds, there are 14 total bonds, and it can be concluded that for every bond is a sigma bond; therefore, we have 14 sigma bonds.

please give answer by structure no copy and paste

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Non metallic oxides are acidic nature.Dissolve sulphur dioxide gas in water. test this solution with blue litmus. the litmus changes into red color. Indicates the solution is acidic in nature.SO2+ H2O →H2SO3

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The properties of elements depend upon valence electrons in the atom which in turn depends on the total number of electrons, i.e., atomic number. Therefore, atomic number is a more appropriate parameter than atomic mass for classification of elements.

(i) Metallic character decreases as you move across a period in the periodic table from left to right. This occurs as atoms more readily accept electrons to fill a valence shell than lose them to remove the unfilled shell.

(ii) Metallic character increases down a group due to increase in atomic size. Thus, the outermost electrons are farther away from the nucleus and therefore can be lost easily. Hence, the electropositive character or metallic character increases.

Metallic character increases as you move down a group because the atomic size is increasing. When the atomic size increases, the outer shells are farther away. ... Electron shielding causes the atomic radius to increase thus the outer electrons ionizes more readily than electrons in smaller atoms.

when we go across the period atomic radius is decreases then the metallic chracter is decreaseswhen we go down the group ,the atomic radius is increases then the metallic character is increases

It is the force that opposes relative motion or tendency of relative motionbetween two surfaces in contactrepresented by f. ... Because of thisfrictionforce is called a self adjusting force. Earlier, it was believed thatfrictionwascauseddue to the roughness of thetwo surfaces in contactwith each other.

1. (i) Benzyl amine being a primary amine will form an unstable diazonium salt which decomposes to benzyl alcohol and nitrogen gas. Aniline forms a stable diazonium salt with acidic sodium nitrite which further reacts with napthol to give a red dye.(ii) Methylamine and dimethylamine can easily be distinguished by carbylamine test.Carbylamine test: Aliphatic and aromatic primary amines on heating with chloroform (CHCl3) and ethanolic potassium hydroxide (KOH/ETOH)form isocyanides or carbylamines. Methylamine, being an aliphatic primary amine, gives a positive carbylamine test, but dimethyl amine, being a secondary amine does not.

2. A = CH3.CH2.CH2.NH2 B = CH3CH2CH2OH + H2O + N2

The aufbau principle states that in the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels. ... The aufbau principle is sometimes called the building-up principle or the aufbau rule

TheAufbau principlestates that in the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels.

Example:

The1sshell is filled before the2ssubshell is occupied.

In this way, the electrons of an atom or ion form the most stable electron configuration possible.

orbitals are filled in the order of increasing energy, using two general rules to help predict electronic configurations:-

1. Electrons are assigned to orbitals in order of increasing value of (n+ℓ).

2. For subshells with the same value of (n+ℓ), electrons are assigned first to the sub shell with lower n.

r:Let the given statement be defined asP(n): The number of subsets of a set containing n distinctelements=2n, for all nϵN.Step1: For n=1,L.H.S=As, the subsets of the set containing only 1 element are:Φ and the set itselfi.e.thenumber of subsets of a set containing only element=2R.H.S=21=2As, LHS=RHS, so, it is true for n=1.Step2: Let the given statement be true for n=k.P(k): The number of subsets of a set containing k distinctelements=2kNow, we need to show P(k+1) is true whenever P(k) is true.P(k+1):Let A={a1, a2, a3, a4,…, ak, b} so that A has (k+1) elements.So the subset t of A can be divided into two collections:first contains subsets of A which don t have b in them andthe second contains subsets of A which do have b in them.First collection: { },{a1},{a1, a2},{a1, a2, a3},…,{a1, a2, a3, a4,…, ak} andSecond collection: {b},{a1,b},{a1,a2,b },{a1,a2,a3,b},…,{a1,a2,a3,a4,…,ak, b}It can be clearly seen that:The number of subsets of A in first collection=The number of subsets of set with k elements i.e. {a1, a2, a3, a4,…, ak}=2kAlso it follows that the second collection must havethe same number of the subsets as that of the first = 2kSo the total number of subsets of A=2k+2k=2k+1Thus, by the principle of mathematical induction P(n) is true.