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drogen is PASSED over the solution of COPPER OXIDE, we get copper back and H2O. REACTION involved is CUO + H2= Cu + H2O

n AFFINITY INCREASES upward for the groups and from left to right ACROSS periodsof a periodic table because the electronsadded to ENERGY levels become closer to the nucleus, THUS a stronger attraction between the nucleus and its electrons

r model was a one-dimensional model that used one quantum number to describe the distribution of electrons in the atom. The only information that was important was the size of the orbit, which was described by the n quantum number. Schr�inger's model allowed the electron to occupy three-dimensional space. It therefore required three coordinates, or three quantum numbers, to describe the ORBITALS in which electrons can be found. The three coordinates that come from Schr�inger's wave EQUATIONS are the principal (n), angular (l), and magnetic (m) quantum numbers. These quantum numbers describe the size, shape, and orientation in space of the orbitals on an atom. The principal quantum number (n) describes the size of the ORBITAL. Orbitals for which n = 2 are larger than those for which n = 1, for example. Because they have opposite electrical charges, electrons are attracted to the nucleus of the atom. Energy must therefore be absorbed to excite an electron from an orbital in which the electron is close to the nucleus (n = 1) into an orbital in which it is further from the nucleus (n = 2). The principal quantum number therefore indirectly describes the energy of an orbital. The angular quantum number (l) describes the shape of the orbital. Orbitals have shapes that are best described as spherical (l = 0), POLAR (l = 1), or cloverleaf (l = 2). They can even take on more complex shapes as the value of the angular quantum number becomes larger. Diagram There is only one way in which a sphere (l = 0) can be oriented in space. Orbitals that have polar (l = 1) or cloverleaf (l = 2) shapes, however, can point in different directions. We therefore need a third quantum number, known as the magnetic quantum number (m), to describe the orientation in space of a particular orbital. (It is called the magnetic quantum number because the effect of different orientations of orbitals was first observed in the presence of a magnetic field.)

2-chlorobutane is an optically ACTIVE molecule. the CARBON numbered as 2 in the molecule is chiral as it has different substituents [-c2h5, ch3, H, Cl] attached to it. thus it rotates plane polarised LIGHT in different directions GIVING rise to two enantiomers [R, S] of the compound.

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gen peroxide is a highly REACTIVE CHEMICAL containing the elements HYDROGEN and oxygen. Its structural formula is: Pure hydrogen peroxide is acolourless liquid, but it is sold on the market as solutions in water, containing up to 33 – 37% pure hydrogen peroxideand other additives to stop the product DECOMPOSING.

a THICK LAYER of SOOT GETS DEPOSITED over it

it is the CORRECT ONE

is GOLD why only for 9 CLASS STUDENTS

sodium SALT that is sodium acetate and ALSO HYDROGEN and carbondioxide

e is ur answer.. 1) alluvial soil are immature and and have weak PROFILES due to their recent origin2)alluvial soil contain sand, slit, and clay3)alluvial soil is considered most fertile soil. The entire NORTHERN plains from india are made from soil. 4)according to age alluvial soil is classified as 1]Bangar (old alluvial) 2]khadar (new alluvial) 5)alluvial soil CONTAINS an ample amount of phosphoric acid and lime. The soil is thus SUITABLE for sugarcane 6)alluvial soil is deposited by river Ganga and Bhramaputra Hope this will help u

in YEAST and LACTIC ACID in MUSCLES.

.8/34×1000/100= 0.2×10= 2 M.

f LIFE of FIRST ORDER reacn is constant i.e.related to rate constant T1/2=.693/k

..................The CORRECT ONE is : 5,5-dimethyl-hexan-1-al.

ry of razia SULTAN in hindi images painting khitiz the same TIME as the other day I was wondering if you are from trusted companies offering professional services and products for your email addressvery , I HAVEA ,IHAVE , I have a look at the moment, but I

s of PLATINUM is 195.08

+NITROUS ACID GIVES NITROPROPANE.

......... INERT PAIR EFFECT.

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lcium and phosphorusnutrient source promotes tissue and bone HEALTH in ANIMALS. ELEVATED serum PHOSPHORUS level with calcium phosphate vs. calcium carbonate.

nodising..The OXIDE LAYER PROTECT the METAL from further CORROSION..

/2H2OHey MAY be this is HELPFUL for you

on of COPPER by Moist air FORMING Copper oxide. This may HAPPEN when the Copper metal is exposed to air. The moisture in the air reacts (or better we can say, oxidises) with the metal and causes it to TURN black.This leads to the FORMATION of Black Copper Oxide layer on it. Cu + H2O -----› CuO + H2Thanks.Hope this helps you..!!

-Lambert's law states that ABSORPTION of solution is light by the solution is directly PROPORTIONAL to it's path-length and concentration. 2) MATHEMATICALLY, it is expressed as A = ∈bc.where, A = absorbance∈ = molar extinction coefficientb = path LENGTHC = concentration3) It is possible to determine the concentration of unknown sample solution (in present case KMnO4)  using calibration curve method. 4) In calibration curve method, series of standard solutions of known concentration is prepared. Absorbance of each of the solution is monitored with the HELP of spectro-photometer.  5) A graph of absorbance Vs concentration is prepared (as shown in figure below). 6) Finally, solution of unknown concentration is introduced in the path of light and it's absorbance is recorded. 7) From the calibration curve and absorbance of unknown sample solution of KMnO4, it is possible to determine the concentration of unknown sample solution.

re different REAGENTS and different tests for the same depending UPON the type of substrate WHETHER organic or INORGANIC you have

MATE ❤️❤️❤️❤️❤️ HERE IS UR ANSWER..The insoluble calcium carbonate is filtered off .The remaing solution containg of BORAX and sod.metaborate is then treated with CO2 to convert sod.metaborate to borax.The solution is now concentrated and cooled to CRYSTALLIZE borax. From BORIC ACID : Borax is prepared from boric acid by boiling with SODA ash...HOPE THIS WILL HELP YOU ❤️ ❤️❤️❤️❤️STAY BLESSED ❤️ ❤️

ation of Mendeleev's periodic table was based UPON certain physical and chemical properties: Physical properties: The ATOMIC masses of the elements were taken into ACCOUNT and the elements were arranged in ORDER of INCREASING atomic massesHope it helps

ogous series is the one in which the MEMBERS have a same general formula and the consecutive members deoffer from each other by 14 a.m.u. or an ALKYL radicle (CH2).Here, CH4 and C3H8 both have the same generations formula of Alkane i.e., C(n)H(2n+2).TAKING n=1, we get CH4Taking n=3, we get C3H8. THEREFORE, they are members of same homologous series. Thanks.Hope this helps you..!!

iend!The IUPAC NAME of this ORGANIC compound is...1,2-dimethyl HEXANE..Hope it HELPS!:D

s of COPPER IONS is COMPENSATED by the copper ions RELEASED by COPPER ANODE.

you WANT to ASK EXACTLY???

e temperature of aluminum chloride is above its melting point, aluminum chloride is a molten salt. Two types of ions are present, Al3+and CL-. Both are in the molten state (which is designated as (l)). The molten salt is similar to a liquid, except the ions are not bound TOGETHER (like H2O in liquid water) and can move indendently of one another. The aluminum ions cannot lose any additional electrons because they already have a noble gas configuration; they can only be reduced. This means that chloride is oxidized (to Cl2). At the high temperatures employed with molten salts, molecular CHLORINE is in the gas state.(a) Reduction takes place at the CATHODE: aluminum metal forms from aluminum ions in the molten salt.

(BA) doesn't SHOW VARIABLE VALENCY

e is UR answerAcetic acid on reaction with sodium metal liberates hydrogen gas.Balanced CHEMICAL equation for the reaction is,2CH₃COOH + 2NA ==> 2CH₃COONa + H₂Here CH₃COONa is called sodium acetate.Hope it helps:)

ment which is present in their LAST ORBIT or the combining capacity of compound KNOWN as valency.ex : carbon atomic number - 6 electronic configuration - 2,4valency - 4I hope it is helpful for you.....