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Spin polarization is the degree to which the spin, i.e., the intrinsic angular momentum of elementary particles, is aligned with a given direction. This property may pertain to the spin, hence to the magnetic moment, of conduction electrons in ferromagnetic metals, such as iron, giving rise to spin-polarized currents.

Balanced equation:SO3(g) + H2O(l) = H2SO4(aq)કૃપા કરીને આ જવાબ પસંદ કરો

Ans :- Nitric acid(HNO3) is a strong oxidising agent. TheHydrogen gasproduced during its reaction withmetalgets oxidised to H2O, henceno hydrogen gasis produced. Instead it evolvesnitricoxides such as NO2, NOetc.

Roasting is a process in metallurgy in which a sulfide ore is heated in air. The process may convert a metal sulfide to a metal oxide or to a free metal.

(iv) [Cr(H2O)6]Cl3 is the answer

please explain

1. Na2B4O7·10H2O is the answer

Balanced equation:S + 6HNO3 ----> H2SO4 + 6NO2 + 2H2O

Balanced equation:C3H8+5O2=3CO2+4H2O

C3H8+5O2→ 3CO2 + 4H2O

maximum no. of elctrons in 2p = 6 and each electrons has either +1/2 or -1/2 equally distributed among them

so, no. of +1/2 electrons will be Option d) 3

2ClO2+H2O=HClO2+HClO3

Then what is your query?

Acidswillreactwith reactivemetals, such as magnesium and zinc, tomakea salt and hydrogen. The hydrogen causes bubbling during thereaction. It can be detected using a lighted splint, which causes the gas to burn with a squeaky pop.

the correct answer is 3

Because angular momentum is a vector, the Spin Quantum Number (s) has both a magnitude (1/2) and direction (+ or -). Each orbital can only holdtwoelectrons. One electron will have a +1/2 spin and the other will have a -1/2 spin. Electrons like to fill orbitals before they start to pair up.

Since its coordination number is 4 therefore it can be tetrahedral or squareplanar.but magnetic moment is 5.9 it should be tetrahedral in shape rather than squareplanar because of the presence of five unpaired electron in in the d orbital

tq

Metals react with oxygento formmetaloxides.Thesemetaloxides are basic in nature. Magnesium oxide dissolves in water to form magnesium hydroxide solution. ... The green coating is a mixture of copper hydroxide and copper carbonatewhich is formedby the action of moist air on copper objects.

Molecular mass of CO2 = 44 g

44 g occupies 22.4 L volume.132 g occupies = 132 * 22.4/ 44 = 67.2 L.

44 g contain 6.022 x 10^23 molecules.132 g contain = 1.80 x 10^24 molecules.

please explain in detail

Option AThemultiplicityof a state is defined as 2S + 1, where S is the total electronic spin.A high multiplicity state is therefore the same as a high-spin state. The lowest-energy state with maximum multiplicity usually has unpaired electrons all with parallel spin. Since the spin of each electron is 1/2, the total spin is one-half the number of unpaired electrons, and the multiplicity is the number of unpaired electrons + 1. For example, the nitrogen atom ground state has three unpaired electrons of parallel spin, so that the total spin is 3/2 and the multiplicity is 4.

Mole = V / 22400

Mole = Weight / Molecular weight

So, V / 22400 = W / Molecular weight

Molecular weight = (W / V ) * 22400

Chemistry is the branch of the science that deals with the composition and properties of substances and various elementary forms of matter.

chemistry is a branch of science. we study compounds properties atoms mols etc.

the scientific study of the structure of substances and what happens to them in different conditions or when mixed with each otherपदार्थों की संरचना तथा विभिन्न परिस्थितियों अथवा एक-दूसरे के साथ मिलाने पर उनमें होनेवाले परिवर्तनों का वैज्ञानिक अध्ययन; रसायनशास्‍त्र2.the structure of a particular substanceपदार्थ-विशेष की संरचना या बनावट

it is branch of science that deals with study of molecules and atom

the correct option is (1)oxygen.

No

sorry I wrote it wrong it's carbon dioxide the option number is correct.and really sorry for this.

Alternating current is used to prevent electrolysis of the electrolytic solution so that concentration of ions in the solution remain constant

Thermosetting plastics are polymeric materials which when heated gets strengthened but cannot be remolded after that. This property of retaining their strength in high temperature makes them well suited for permanent components of large solids and etc.

Some examples are melamine resin, epoxy, polyester resin.

thanks😀😁😂

Bakelite is a thermosetting plastic (phenol-formaldehyde resign). It is used for making TV cabinets, telephone components, billiard ball, bearings, electrical goods etc. It is prepared by the polymerisation reaction between formaldehyde and phenol.

examine the plate boundaries in the given map and write the name of the plate

on which side of continent of North South America are the earthquake prone zone located ? which mountain are located

examine the plate boundaries

Protistsare eukaryotic organisms that cannot be classified as a plant, animal, or fungus. They are mostly unicellular, but some, like algae, are multicellular.

Kw = [H+][OH-]

so [H+][OH-]Hence[H+]^2=10^-13[H+]=10^-7pH=log[H+]hencepH=7

Silicon dioxide react with fluorine to produce silicon tetrafluoride and oxygen. The reaction proceeds at room temperature.

SiO2+ 2F2→ SiF4+ O2

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Upon hydrolysis, the products glucose and fructose form needle shaped crystals. Three molecules of phenylhydrazine are required, the reaction takes place at first two carbon atoms. The difference in these sugars present on the first and second carbon atoms are masked when osazone crystals are formed.

2)Formation of ozone involves only C1and C2carbon atoms. The rest of the carbon atoms remains uneffected. Glucose and fructose differ only in the configurations of first and second carbon atoms remaining positions are similar. So they form same osazone.

Cold is not a matterbecause it is a type of feeling and donotoccupies mass and donothave mass whereascold drinkis a liqiud and has mass as well as space therefore it ismatter.Cold is not a matter but cold drinkis because,coldis a word which we cannot touch or feel

Because cold does not have weight and does not occupy space but cold drink have mass and occupies space. 3.9.

chemistry is the branch of science

1 is the correct answer of this question

(I) double displacement (II) combination reaction (III) decomposition reaction (Iv) displacement reaction

Ans- (1)It is double displacement reaction. (2)It is combination reaction. (3)It is decomposition reaction and also endothermic reaction. (4)It is displacement reaction

so smart i knew you have copied from other.

Hess's Law of Constant Heat Summation states that regardless of the multiple stages or intermediate steps of a reaction, the total enthalpy change for the reaction is the sum of all changes.

The enthalpy of a chemical process is independent of the path taken from the initial to the final state.

The correct option is B.

Mass percent =(mass of solute/mass of solution)×100=(2/18)×100=0.1111×100=11.11

The temperature of any substance remain constant during the change of state because the heat energy supplied is used up in changing the state of matter and also this heat is used for breaking of several bonds or attractive forces.This heat, which does not raise the temperature of the body, is called Latent heat.

The number of molecules in flask A is greater than that in flask B, because the atomic weight of H2 is less than N2.

According to the ques. the valency of M is 1.therefore,oxide-M20Nitride-M3NSulphate-M2SO4

1) OH, valency=-12) Cl, valency=-13) CO3, valency=-24) NH4, valency=+15) NO3, valency=-26) SO4, valency=-27) S, valency=-28) O, valency=-29) HCO3, valency=-110) N3, valency=-3

Hope it helps.Mark as best if you like.

1.OH2. Cl3. CO34. NH45. NO36.SO47. S8. ON39. HCO310.