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Dipole MOMENT (THEORETICAL) μ = Q X d coulomb-metre

Q is the charge of electron = 1.6 x 10^-19 C

d is the BOND LENGTH in metres

μ = 1.6 x 10^-19 x 1.2 x 10^-10 = 1.92 x 10^-29 C-m = 19.2 x 10^-30 C-m

= 5.75 D

(1 debye = 3.34 x 10^-30 C-m)

% ionic character = actual dipole x 100/ theortical dipole

= 1.92 x 100/ 5.75 = 33.4 %

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Electron
protons.
etc....

HCl and HNO3 are strong ACIDS (polar in nature) thus releases H+ ions when dissolved in aqueous solutions where as glucose and ALCOHOL molecules are not acids (and NON polar in nature) so, they cannot release H+ ions in aqueous solutions. ALCOHOLS partially release H+ ions in aqueous solutions, so they are considered as weak acids. 

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6 HYDROGEN ATOMS are contained in one MOLE of ETHANOL.

It is the CORRECT ANSWER.

4HBr+C--> CH4 + 4Br



It's not BUTENE

The NUMBER of electrons present inside an atom or element determines the chemical properties of the atom or element. Because the number of electrons in an atom and its isotopes are the same, the chemical properties of an isotope are similar to that of the PARENT atom. On the other HAND, heavy isotopes have large masses and DIFFERENT chemical properties as compared to their parent atoms. This phenomenon is termed as KINETIC Isotope Effect.

WATER IS A COMPOUND AND NOT A MIXTURE BECAUSE

1 In a COM POUND the constituent elements

are in a fixed proportion whereas in a mixture it is necessarily notn so In water Hydrogen and Oxygen are in a definite ratio ie 2 : 1 volumetrically and 1:8 by weight

2 While forming a compound a chemical reaction necessarily takes place but it is not so while forming a mixture Here water is formed because of a chemical reaction between Hydrogen and Oxygen

2H2 + O2 = 2 H2O

3 In case of a compound the constituent elements cannot be obtained back using SIMPLE physical processes In case of a mixture they can be so obtained back

Hydrogen and Oxygen cannot be obtained back using simple physical processes

4 In case of a chemical compound the constituent elements do not retain their properties but in case of a mixture the CONSTITUENTS retain their properties In water there are no properties of Hydrogen or Oxygen

Hydrogen is combustible ie it burns readily in the atmosphere and Oxygen helps combustion On the CONTRARY water is used to extinguish the fire..
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Combination
double displacement
displacement
decomposition

Ans:(d)
STEP 1: X=20dm^3---》2L
x=2L/22.4=0.1
mol= mass/molar mass (x)
MR (x)=mass/mol=2/0.1
=20.

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Bromine is ELEMENT with Symbol Br and atomic NUMBER 35.It is a part of Halogens family. ... So Br has 7 electrons in their OUTERMOST shell, so it's valency is 1.

Cu + 2HNO3 = CUNO3 + NO2 + H2O

This is the correct EQUATION not that ONE

Most COMMON oxidation number is +2 and +4 and the least common number is +1 and +3

Density is mass/volume
This means higher the volume, lower the density.
Ice OCCUPIES more volume when compared to water.
It occupies more volume due to the orientation of its HYDROGEN BONDS which have more spaces in them.

The numbers are used to balance the no. of atoms on both sides of the equation. ACCORDING to law of CONSERVATION of mass, sum of mass of reactants is EQUAL to sum of mass of products, i.e., the no. of atoms must be the same.

LHS = Ag has 2 atoms and Br has 2

similarly,

RHS = Ag has 2 atoms and Br has 2.

Hey
Quantum numbers are SET of numbers which are USED to identify the position of electrons in a particular SHELL of a particular ATOM or molecule.

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ANSWER:

EXPLANATION:

∆p=m∆v=9.1*10^-31*(5.7*10^5), CALCULATE the VALUE, you will GET the answer

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The force that holds the electrons and protons TOGETHER is the ELECTROMAGNETIC force. The number N tells you what element you have: for HYDROGEN N equals 1, for helium, 2, and so on. ... To avoid this separation, another particle COMES into play in the nucleus: the neutron.

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A mixture of Ammonium chloride and Sulphur can be separated by the PROCESS of SUBLIMATION. Ammonium Chloride is a sublimable SUBSTANCE. Hence, we can SEPARATE NH4Cl and S.

In this case copper displaces silver from silver nitrate compound. This displacement reaction occurs because copper is more REACTIVE than silver. A SHINING greyish white deposit of silver is formed on the copper strip and the solution becomes BLUE DUE to the FORMATION of copper nitrate

AQUA regia is a mixture if HCl and HNO3 in the ratio 3:1. This mixture can DISSOLVE Novle metals LIKE gold and SILVER

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At FIRST u will find out no. of moles by this formula __
mole =no. of ATOMS / 6.023 X10 ^23

Then u will get molecular weight by this formula ___
mole = weight / molecular weight
molecular weight = weight /mole


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If n = 4

Then L will be 0, 1, 2, 3

So the maximum VALUE of L is 3


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Cl has more OXIDISING POWER then f2 because it has more vacancy then f2 and it EASILY OXIDIZING

The ANSWER is MAGNESIUM ( MG).

PROBABLY you WOULD have KNOWN the ANSWER.

Is it MATHS or SCIENCE If you SAY at LEAST I can TRY

The STEADY decreases in the size of the ATOMS and ions of the rare earth elementswith INCREASING atomic number from LANTHANUM through lelutium
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Chromium has SIX valence electrons. For chromium, the 4s shell is lower on the orbital than the 3d shell. When the electrons are filling up the energy levels, both the 3d shell and the 4s shell have ONE electron in their orbitals. This is because electrons tend to occupy energy levels that are not ALREADY occupied before they start pairing. However, this means that there are valence electrons in both the 3d shell and the 4s shell.

Because we know that there are 5 electrons in the 3d shell and 1 electron in the 4s shell, we can conclude that there is a total of 6 valence electrons for chromium. The electron configuration of chromium is (Ar)4s13d5.

The REACTANT will have more TEMP. as HEAT will be PRODUCED.

Because SEA WATER is a MIXTURE

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At present 91 ELEMENTS are metal. 22 are non metals nd REST are METALLOID.