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The OCTET Rule requires all atoms in a molecule to have 8 valence electrons--EITHER by sharing, LOSING or gaining electrons--to become stable. For COVALENT bonds, atoms tend to share their electrons with each other to satisfy the Octet Rule

Answer: The enthaply of dissociation is 1.2 kcal/equiv

Explanation:

Heat of neutralization defined as heat evolved when one gram equivalent of an ACID is completely neutralized by a base.

Strong acid and strong base and the salt produced remain completely DISSOLVED in dilute solutions, so the neutralization reaction may be represented as

Therefore, the neutralization between strong acid and strong base may also be called as formation of one mole of water. So, the heat change accompanying this reaction is constant and the value is -13.7 kcal/equivalent.

But oxalic acid being a WEAK acid will not dissociate completely in water. Some of it remains as undissociated molecules in water. Some amount of heat of neutralization is used to ionise undissociated molecules. As some amount of energy is CONSUMED, energy released is less.

As enthaply of neutralization for oxalic acid is given for 1 mole= -25kcal

For 1 equivalent it will be = -25/2 kcal = -12.5kcal (as it is a DIBASIC acid)

Enthalpy of dissociation = enthaply of neutralization of weak acid- enthalpy of neutralization of strong acid

Enthalpy of dissociation = -12.5 -( -13.7) kcal = 1.2kcal

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Some of the organic ACIDS are
Acetic acid(CH3COOH)
methanoic acid(HCOOH)

LACTIC acid(CH3CH(OH)COOH)
CITRIC acid(C6H8O7)

HEYA....

Here is your ANSWER...

The COEFFICIENT of O2 is 37.

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MASS number = No. of protons + No. of NEUTRONS = 31  

∴ Number of neutrons = 31– number of protons  

                                   = 31–15  

                                   = 16

A gas usually has much lower density than a SOLID or LIQUID. The molecules or atoms in a gas are much further apart than in a solid or a liquid. Gas molecules or atoms are usually flying around at very high SPEEDS.

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THERMAL compressibility comes out to be 1. SINCE the gas behave as IDEAL gas at HIGH temperature.

Answer: redox REACTION ( both OXIDATION and reduction TAKES place )

when the SPECIES loses electrons

- oxidation reaction

when the species gains electron

- reduction reaction

I THINK SODIUM........

A. 18.67 this is your ANSWER

Heya...

Here is your answer....

Alkali metals have LOW density because of their large atomic SIZE. They have only one VALENCE electron. As a RESULT, their metallic bonding is weak. They are, therefore, soft metals of low density.

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_______✨ HEY MATE ✨______

Sneel's Law is a formula used to describe the RELATIONSHIP between the ANGLES of incidence and REFRACTION, when referring to light or other waves passing through a boundary between two DIFFERENT isotropic media, such as water, glass, or air.

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An ORGANISM is known to be bisexual if it has both the male and female REPRODUCTIVE PARTS .
• • •
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In organic chemistry, a cycloalkyne is the cyclic analog of an ALKYNE. A cycloalkyne CONSISTS of a closed ring of carbon atoms containing ONE or more triple BONDS. ... Despite this, smaller cycloalkynes can be produced and trapped through reactions with other organic molecules or through complexation to transition metals.

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Oxygen is sp3 hybridised in H2O molecule. Two hybrid orbitals are occupied by lone pairs and two are USED in bonding with HYDROGEN atoms. Since lone pairs does not contribute to the geometry of a molecule, therefore H2O has an ANGULAR geometry.

Because it contains 70% ZINC and 30% copper.so it is an ALLOY of copper and zinc and all alloys are homogeneous mixtures.

Because it is necessary to GET BOUND between METAL and nonmetal so this pheonamenon is depend UPON the electron present in the ORBIT

Solar cells made of c-Si are made from WAFERS between 160 and 240 micrometers thick. MONOCRYSTALLINE silicon. Epitaxial silicon development. Polycrystalline silicon. RIBBON silicon. Mono-like-multi silicon (MLM) Cadmium telluride. COPPER indium gallium selenide. Silicon thin film.
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In GENERAL, the base PART of the NAME reflects the NUMBER of carbons in what you have assigned to be the parent CHAIN.

This is because
water is a main source for everything around us
WITHOUT water the TREES will not grow
no ANIMAL will survive

phenopthalin and METHYL RED.                          

It's C 6TH PERIOD, 18 group
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PLEASE MARK AS BRANLIST

How much you to KNOW about a month and tell the best THING that we are in GOOD CONDITION that you can use it.

There are many harmful PRODUCTS like burning of those type thing we plouted our ATMOSPHERE so do not burn these type THINGS

Measuring Devices, Definition Standard Atmospheric pressure, VARIOUS units of pressure, Gas Laws, Boyle’s Law, Isotherm, Altitude Sickness.

CHARLES’ Law, Straight Line, Alternative from of charles’ law, Isobar, Effect of Pressure, Gay Lussac’s Law, Avogadro’s Law, Ideal Gas Equation, Numerical Value of R.

Dalton’s Law of partial Pressure, Graham’s Law of Diffusion/Effusion, Kinetic Molecular Theory of Gases, Kinetic Gas Equation, Derivation of Gas Laws, Kinetic Energy and Temperature.

Maxwell Distribution of molecular speeds, Effect of Temperature, Collision Parameters, Ideal Gases, Real Gases, Effect of Temperature on DEVIATIONS, Boyle Temperature, Reasons For Deviation, Corrections : Van der waals, Significance of Van der Waals CONSTANTS, Vander Waals Equations, Boyle Temperature in terms of Vander Waals Constant.

Liquefaction of gases, Critical Temperature (Tc), Critical Pressure (PC), Critical Volume (Vc), Critical constant of some gases, Critical constants in terms of Van der Walls constants, Andrews Experiment.

Bhai akhri wale 3 CONFIRM nahi hai lekin AGAR tumko kuchhbdoubt lage to brainly PE upload krne wajaye periodic table se confirm krlena GOOGLE MIL jayegi


Periodic Table

Calorific VALUE of a FUEL is the heat ENERGY produced when THW fuel is burned.

3-pentane is the IUPAC NAME of TERTIARY PENTYL

HEY THERE.........

Powdered Mg has greater SURFACE area as compared to that of Mg ribbon and the INCREASED surface area allows BETTER INTERACTION with sulphuric acid and hence more reaction take place .

And there in this question u wrote it as oil.H2SO4  and it should be corrected as Dil . H2SO4 ....

HOPE YOU UNDERSTOOD............

The final product of COMPLE ol oxidation of hydrocarbons are
CH4 +O2- CO2+ HEAT + LIGHT

Lets find out

Firstly determine the molar mass of POTASSIUM nitrate[KNO3]

39.1 + 14 + 3(16) = 101.10

Then simply divide mass/molar mass of KNO3

Mass of KNO3 = 8G

Molar mass of KNO3 = 101.10

No. of molecules = 0.079

0.079 moles are present in 8g of KNO3

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Here is your answer.....


⭐Metals are good CONDUCTORS of heat as WELL as electricity this is because , they have free electrons or we can say electrons are LOOSELY bounded so they can flow easily.

⭐Whereas, in case of a GLASS it is a bad conductor of electricity as it does not have any free electrons and they are bounded tightly which opposes the free MOVEMENT of electrons.


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2 GM of hydrogen COMBINES with 7gm of oxygen to FORM 9gm of water MAYBE..!

When oxygen ( atomicity 2) CONVERT into OZONE
then it's atomicity changed to 3.

I hope this will HELP you

What is your QUESTION FRIEND ???

I THINK 1 ELECTRON of CHLORINE

Sulfur dioxide is a gas. It is invisible and has a nasty, SHARP smell. It reacts easily with other substances to form harmful compounds, such as sulfuric acid, sulfurous acid and SULFATE particles. About 99% of the sulfur dioxide in air COMES from human SOURCES.

Your organic teachers are quite likely to ask you QUESTIONS like identify the most acidic protons or the most basic site in a molecule.  These facts can be IMPORTANT for determining where a molecule is likely to react when treated with a base or acid respectively. Many students can not do this efficiently. The following topics are covered here:

DEFINITIONS : Arrenhius, Bronsted, Lewis

Acidity :  Ka and pKa

Common acids in organic chemistry

Basicity

Common bases in organic chemistry

Remember that acidity and basicity are the based on the same chemical REACTION (but looking at it from opposite sides) and both happen simultaneously. In the following simple example the base, B, removes a proton from the acid, H-A:
PLEASE PLEASE PLEASE MARK ME BRAINILIST

Hydrogen BOND is the STRONGEST in Van der WALES FORCES