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option 3 is the correct answer

because Mg will always have + ve charge.

so, CH3- should have partial -ve.. on it.. hence -I effect

can u place explain

see . the small explain.

ok thx

a. esterb. ketonec. alkoxyd. aldehydee. amidef. amine

Molar mass of chloroform CHCl3= (1 * 12) + (1 * 1) + (3 * 35.5) = 119.5 g/mol

Molar mass of dichloromethane CH2Cl2= (1 * 12) + (2 * 1) + (2 * 35.5) = 85 g/mol

Moles of CHCl3= 25.5/119.5 = 0.213 mol

Moles of CH2Cl2= 40/85 = 0.47 mol

Total number of moles = 0.683 mol

Mole fraction of CH2Cl2= 0.47/0.683 = 0.688

Mole fraction of CHCl3= 1 - 0.688 = 0.312

As we know, each atom, except the noble gases, react, as they want to have their last shell to be full. The last shell of electrons in an atom can have a maximum of 8 electrons, which each of the noble gases have, and hence they don't react.

But all other elements do not have a complete last shell (or valence shell) and either share electrons (and form covalent bonds) or donate and receive electrons (and form ionic bonds).

An atom is always electrically neutral, as the protons (positive charge) in the nucleus and the electrons (negative charge) around the nucleus are equal in number. This equal number and opposite charge cancels each other's charge fully, making the atom electrically neutral. But when an electron is donated, the number of electrons is reduced by one, and hence there is one proton more than the number of electrons, giving it a positive charge. If an atom received an electron, the same logic applies, and it gets a net negative charge.

Now, magnesium has 2 extra electrons, and if it gives them away, it will have the eight electrons in its valence shell, whereas chlorine has 7 electrons, and if it receives one, it will get 8 electrons in its valence shell.

The magnesium gives two electrons, but the chlorine receives only one electron. Hence 2 chlorine atoms are required to take magnesium's electrons. Now, magnesium has lost 2 electrons, and gets "2+" positive charge, as it has two protons more than electrons. And each of the two chlorine atoms gets a single "-1" charge, as they have one electron more than the protons.

Now, as positive and negative attract vigorously, the two elements combine (one magnesium atom and two chlorine atoms) to form the compound magnesium chloride, that is MgCl2.

This is an ionic bond formed by the donation and acceptance of electrons, and each of the atoms have charges.

Now, when this is dissolved in water, the water molecules attract these ions and force them to separate. This happens in almost every ionic bond when dissolved in water. When they are separated, they have charges and are in the form of ions, and hence conduct electricity, by the movement of these ions in the solution.

The magnesium gives two electrons, but the chlorine receives only one electron. Hence 2 chlorine atoms are required to take magnesium's electrons. Now, magnesium has lost 2 electrons, and gets "2+" positive charge, as it has two protons more than electrons. And each of the two chlorine atoms gets a single "-1" charge, as they have one electron more than the protons.

Now, as positive and negative attract vigorously, the two elements combine (one magnesium atom and two chlorine atoms) to form the compound magnesium chloride, that is MgCl2.

This is an ionic bond formed by the donation and acceptance of electrons, and each of the atoms have charges.

Now, when this is dissolved in water, the water molecules attract these ions and force them to separate. This happens in almost every ionic bond when dissolved in water. When they are separated, they have charges and are in the form of ions, and hence conduct electricity, by the movement of these ions in the solution.

similarity are:

(i) Both lithium and magnesium are harder lighter than other elements in the respective groups.

(ii) Lithium and magnesium react slowly with water. Their oxides and hydroxides are much less soluble and their hydroxides decompose on heating.

(iii) The oxides, Li2O and MgO do not combine with excess oxygen to give any superoxide.

(iv) The carbonates of lithium and magnetism decompose easily on heating to form the oxides and CO2 .

(v) Both LiCl and MgCl2 are soluble in ethanol.

(vi) Both LiCl and MgCl2 are deliquescent and crystallize from aqueous solution as hydrates, LiCl.2H2O and MgCl2.8H2O.

please like my answer if you find it useful

Here is the answerto your question,

C6H5ONa ++ C2H5Cl ------> C6H5OC2H5+ NaCl

Hope it is clear to you.

3) is the correct answer

hlo

hlo........

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.......

a) reducing agent is HCL (oxidation state: -1 --> 0) oxidizing agent is MnO2( oxidation state: 4 --> 2)

b) reducing agent is H2 ( oxidizing state : 0 --> 1) oxidizing agent is CuO ( oxidizing number : 2 --> 0)

thx

Extensive properties depends on the amount of substance. Hence, option (b) Volume is an extensive property of the system.

volume

D. to absorb moisture

A small pouch is kept in medicine bottles containing tablets and capsules because silica gel is known to be the best drying agent.

So, the use of silica gel arrives when pills prone to get affected by environment around, by the moisture.

Then, silica gel absorbed the moisture and helps in the better effectiveness and retaining the manufactured chemical stability

Please hit the like

d to absorb moisture

option 4) is the correct answer

1 is the correct answer

This is ferromagnetic allignment. Spins are alligned parallel and indicates strong magnetism.

2,2 dimethyl propane.

2,2-dimethyl propane

2,2-dimethyl propane

2,3di methyl propane

Hydrochloric acidis the acid used in salt. It can be used to prepare salts containing the Cl– anion called chlorides.

Electrolysis of brine solution (NaCl) gives NaOH.

At anode -2Cl ^- -----> Cl2 + 2 electrons

At cathode -2H+ + 2 electrons ------> H2

In the solution, Na+ + OH- ------> NaOH

This process is known as Chlor alkali process

exfoliation

Dissolution is a process by which the original states of matter turn into a liquid or other solvent and become solutes - dissolvedcomponents.Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

Whendettol is added to water, diffusion takes place.

2.dry ice means solid carbon dioxide.its chemical formula is CO2

Hydrochloric acid is the acid used in salt. It can be used to prepare salts containing the Cl– anion called chlorides.

The poorest conductor of heat among metals isBismuth.Stainless steelis another one that is a poor conductor of heat, and you use this often in everyday life! Other poor conductors includetitanium,leadand chromium. And most ironically,Mercury, the liquid metal used in thermometers!

A) MERCURYB) SODIUMC) SILVERD) TUNGSTEN

1ans: 2,8,5 is the electronic confiragation

Ans.2 ) Organisms which can produce both male and female gametes are called as Hermaphrodites animals.example : earthworm

Ans.2 ) Organisms which can produce both male and female gametes are called as Hermaphrodites animals.example : earthworm

1) 1s2, 2s2, 2p6, 3s2, 3p6

. From sodium peroxide (Merck’s method)

Calculated amount of sodium peroxide (Na2O2) is gradually added to an ice-cold solution of 20% H2SO4in small lots with constant stiring.

Na2O2+H2SO4→ Na2SO4+ H2O2

Upon cooling, crystals ofNa2SO4.10H2Oseparate out and the resulting solution contains about 30% H2O2. The solution also contains some dissolvedNa2SO4, but it does not interfere with the reactions ofH2O2. A pure sample ofH2O2may, however, be prepared by vacuum distillation.

2. From barium peroxide-Laboratory method of preparation.

Hydrogen peroxide is prepared from barium peroxide by the following methods:

(a)By the action of dilute sulphuric acid. Apaste of hydrated barium peroxide (BaO2.8H2O)is prepared in ice – cold water and then added slowly to an ice-cold solution of 20%H2SO4.

BaO2.8H2O+ H2SO4→ BaSO4+ H2O2+ 8H2O

The white precipitate of BaSO4is removed by filtration leaving behind a dilute solution (5%) of H2O2. In this method, anhydrous barium peroxide can not used since the precipitated BaSO4forms a protective layer around unreacted barium peroxide thereby preventing the further reaction

Previously, hydrogen peroxide was prepared industrially byhydrolysisof theammonium peroxydisulfate, which was itself obtained by theelectrolysisof a solution ofammonium bisulfate(NH4HSO4) insulfuric acid:

(NH4)2S2O8+ 2H2O→H2O2+ 2(NH4)HSO4

Today, hydrogen peroxide is manufactured almost exclusively by theanthraquinone process, which was formalized in 1936 and patented in 1939. It begins with the reduction of ananthraquinone(such as2-ethylanthraquinoneor the 2-amyl derivative) to the correspondinganthrahydroquinone, typically byhydrogenationon apalladiumcatalyst; the anthrahydroquinone then undergoesautoxidationto regenerate the starting anthraquinone, with hydrogen peroxide as a by-product. Most commercial processes achieve oxidation by bubblingcompressed airthrough a solution of the derivatizedanthracene, whereby the oxygen present in the air reacts with the labile hydrogen atoms (of the hydroxy groups), giving hydrogen peroxide and regenerating the anthraquinone. Hydrogen peroxide is thenextracted, and theanthraquinonederivative is reduced back to the dihydroxy (anthracene) compound usinghydrogengas in the presence of a metal catalyst. The cycle then repeats itself.

1. From sodium peroxide (Merck’s method)

Calculated amount of sodium peroxide (Na2O2) is gradually added to an ice-cold solution of 20% H2SO4in small lots with constant stiring.

Na2O2+H2SO4→ Na2SO4+ H2O2

Upon cooling, crystals ofNa2SO4.10H2Oseparate out and the resulting solution contains about 30% H2O2. The solution also contains some dissolvedNa2SO4, but it does not interfere with the reactions ofH2O2. A pure sample ofH2O2may, however, be prepared by vacuum distillation.

Answer:D) Al and SIExplanation

electric current in a circuit varies while varying the voltage of that circuit

Given:

vi = 0 m/s

vf = 112 m/s

d = 398 m

Find:

a = ??vf2 = vi2 + 2*a*d(112 m/s)2 = (0 m/s)2 + 2*(a)*(398 m)

12544 m2/s2 = 0 m2/s2 + (796 m)*a

12544 m2/s2 = (796 m)*a

(12544 m2/s2)/(796 m) = a

a = 15.8 m/s2

Inert gases all have similar properties under standard conditions: they are all odorless, colorless, monatomic gases with very lowchemical reactivity. The six noble gases that occur naturally are helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), and Radon (Rn).

C2H4 + O2 = CO2 + H2O, BALANCED:C2H4 + 3O2 --> 2CO2 + 2H2O

4Al+3O2—-2Al2O3

N=molecular weight /Empericalweightn= 78/13 = 6molecular formula = (CH)n = C₆H₆

A period 3 element is one of the chemical elements in the third row (or period) of .... However, its final name, suggested in 1831, reflects the more chemically similar elements carbon...

Elements

The hybridisation of AsF5 is sp3d

In which dz² is the hybridised d orbital , with 3 p orbital and 1 s orbital

so, option 3

the correct answer is 74

a reaction in which a metal is displacing other metal from its metalcompond it is a called metal displacement

Displacementreactions betweenmetalsand their salts. Somemetals aremore reactive thanothers. In this experiment, a strip ofmetal isadded to a solution of a compound ofanother metal. A more reactivemetal displaces(pushes out) a less reactivemetalfrom its compound.

Displacementreaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound. Bothmetalsand non-metalstake part indisplacementreactions. Example : Reaction of iron nails with copper sulphate solution.

IUPAC:

hexyne

N2 + 3H2 ---->2NH3here.28kg N reacts with 6kg of Hso,50 kg of M react with 6/28×50kg H = 10.7kg but we have only 10 so H2 is limiting reagent..

6kg H2 gives 34kg NH310kg H2 will give 34/6×10=56.67kgNH3

3-methylbutanol