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in the procesS of electrolytic DECOMPOSITION reaction, while electric CURRENT is passed through H2O,
hydrogen and oxygen get broken down and get decomposed NEAR the anode and the cathode respectively
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Solid to LIQUID melting

Liquid to gas evaporation.

Gas to liquid CONDENSATION.

Liquid to solid freezing.

Solid to gas SUBLIMATION.

Gas to solid sublimation.

These changes occur beacuse of change in temperature, pressure


Here the changes occur by BREAKING thier intermolecular force of attraction between their particles.

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STEAM will PRODUCE more SEVERE burns than boiling WATER because steam has more heat energy than water due to its latent heat of vaporisation.

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Because 273K MEANS 0 degree Celsius. And as we know at 0 C ICE is more cooler than water
K = C + 273
273 = C + 273
Therefore, C = 0

At room temperature (anywhere from zero degree centigrade to 100 DEGREES centigrade), WATER is found in a liquidstate. This is because of the tiny, weak hydrogen bonds which, in their billions, HOLD water MOLECULES together for small fractions of a second. Watermolecules are CONSTANTLY on the move.

We can save our environment from hazardous effect of PLASTIC by following ways :-
1)By MINIMISING USE of plastic
2) instead of plastic bags use JUTE bags etc.
3)by recycling plastics if possible.
4)by following the slogan 'If you can't reuse it,refuse it'( here it means plastic)

A colloidal solution, sometimes KNOWN as a colloidal SUSPENSION, is a solution in which a MATERIAL is EVENLY SUSPENDED in a liquid. In other words, a colloid is a microscopically small substance that is equally dispersed throughout another material.

Isotone are ATOMS of same ELEMENT having same atomic number
Example : OXYGEN and carbon

yes water exist in three STATE
SOLID as ice
liquid as water
gaseous as STEAM

A 2M solution will be 2 molar by definition. It is the last bit of DATA that worries me. CONC SULFURIC acid has a density of 1.84 grams/ml. You cannot have it both ways.

An ATOM is the smallest PARTICLE of an element.Everything is MADE up of atoms.Atoms join together to FORM molecules.

Kmno4= 15g (solute) amount of SOLVENT = 75G (H2O) so now , solubility...= amount of solute/ amount of solvent so we GET, 15/75 , ANS= 0.2%

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The structure of ATOM was first given by the plum PUDDING MODEL of J.J. Thomson before the EXPERIMENT of ERNEST Rutherford. The plum  ...

Explanation:

Home » Forum » Physical Chemistry » 25.4 G of iodine and 14.2 g of chlorine are...

25.4 g of iodine and 14.2 g of chlorine are made to react completely to yield a mixture of ICL and ICL3 . CALCULATE the no. Of moles of ICL and ICL3 formed.

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Answers : (2)

It is based on principle of POAC

see given that I2 + 2CL2 gives ICL + ICL3.

Now we have molar mass of I2 =127x2=254

Molar mass of Cl2=35.5x2=71

So,,moles of I2 used in the reaction =given mass/molar mass =25.4/254=0.1 moles of I2

Moles of Cl2 used in the reaction is =14.2/71=0.2 moles of Cl2

so and therefore from the reaction we see that 1 mol of I2 react with 2 moles of Cl2 to give one mole of each ICL and ICL3

Interpreting the same data with the same data with the given sample we can conclude that 0.2 mol of Cl2 reacts with 0.1 mol of iodine to give 0.1 mol of each ICL and ICL3

Gel formation in free‐radical polymerization via chain transfer to polymer, recombination termination, and terminal branching due to either chain transfer to monomer or disproportionation termination is investigated using the method of moments. It is found that no gel can possibly form in the systems consisting of initiation, propagation, and ONE of the above reactions. However, systems with the following combination of reactions are found to be capable of gelling. They are: chain transfer to polymer + recombination termination; chain transfer to polymer + terminal branching due to disproportionation termination; and terminal branching due to transfer to monomer + recombination termination. Systems with the following combination of reactions are incapable of gelling; transfer to polymer + terminal branching due to transfer to monomer; and terminal branching due to disproportionation termination + recombination termination. An examination of the gelation mechanisms reveals that the formation of multivinyl macromonomers during the course of polymerization is the reason that systems involving terminal branching gel. Sol/gel diagrams are generated to give critical kinetic parameters required for gelation. It is found that terminal branching does not always promote gelation due to the adverse EFFECT on chain LENGTH through chain transfer to monomer and termination by disproportionation, reactions which generate terminal double BONDS. © 1994 John Wiley & SONS, Inc.

The CONCENTRATION of hydronium ions decreases when an ACID is DILUTED because on adding water the H+ ions of the acid and hydroxyl ions of water react to FORM water molecules and the concentration of hydronium ions decreases.
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Answer:

(i) Atomic number: The atomic number is the total number of protons present in the atom. For example, the atomic number of sodium is 11. It contains 11 protons and 11 ELECTRONS. 

(ii) Mass number: It is the sum of the number of neutrons and the number of protons. For example, the atomic number of magnesium is 12 which is equal to the number of protons, the number of neutrons of magnesium is 12. The mass number is equal to 24 (12+12).

(iii) Isotopes are the elements having same atomic number but different mass number. They have same chemical properties as the number of valence electrons are same. For example, 6C12, 6C13, 6C14 are the three isotopes of CARBON. They have same atomic number but different mass number due to difference in the number of neutrons.

(iv) Isobars: They are elements having the same mass number but different atomic number. For example. 18Ar40, 19K40 are isobars having the same atomic mass but different atomic number.

The two USES of isotopes are:

Nuclear weapons and nuclear power require large quantities of isotopes of uranium.

An isotope of cobalt is used in the TREATMENT of cancer.

ANSWER:

KATAR: झुंड समूह लैना श्रेणी पाँति पंक्ति

अचरज: हैरानी, स्तब्धता

Answer:

The main components of a habitat are shelter, water, food, and space. A habitat is SAID to have a SUITABLE ARRANGEMENT when it has the correct amount of all of these.

Explanation:

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Answer:

Electricity is most often generated at a power PLANT by electromechanical generators, primarily driven by heat engines fueled by COMBUSTION or nuclear fission but also by other means such as the kinetic ENERGY of flowing water and wind. Other energy sources include SOLAR photovoltaics and geothermal power.

Explanation:

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ANSWER:

the energy contained in a fuel or food, determined by measuring the heat produced by the complete combustion of a SPECIFIED QUANTITY of it. This is now usually expressed in JOULES per kilogram.

Explanation:

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In CHEMISTRY, the law of definite proportion, sometimes called Proust's law, or law of constant COMPOSITION states that a given CHEMICAL compound always contains its component elements in fixed RATIO (by mass) and does not depend on its source and method of preparation.

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Answer:

Osmium

Osmium is one of the heaviest materials on earth, WEIGHING twice as much as lead PER teaspoon. Osmium is a CHEMICAL ELEMENT in the platinum group metals; it's often used as alloys in electrical CONTACTS and fountain pen nibs.

EXPLANATION:

ZINC carbonate+sulphuric acid=carbon dioxide+H2O+ZnS

not SURE about the ANSWER

ANSWER:

TRUE

EXPLANATION:

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Longitudinal wave, wave consisting of a periodic disturbance or vibration that takes place in the same direction as the advance of the wave. SOUND moving through air also COMPRESSES and rarefies the GAS in the direction of travel of the sound wave as they VIBRATE BACK and forth.

ANSWER:

OPTION B is the answer for both QUESTIONS

Answer:

Your files in Salesforce can be PRIVATE to you, PRIVATELY shared, or visible to your ENTIRE company. Learn how to identify a file’s sharing settings and how to CHANGE them.

ANSWER:

iron,100°c is the ANS and PLZ THANK me

ANSWER:

ETHANE FORMULA= C2H6

Explanation:

HELPS U

ANSWER:

sedimentation is an effective process

there are two new methods that efficiently remove solids at a HIGH RATE. One of these is Chemically Enhanced Primary Treatment (CEPT) and the other is mechanical separation. The CEPT process adds metal salts and polymers prior to the wastewater entering the primary tanks.

Answer:

d is the CORRECT answer

EXPLANATION:

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ANSWER:

SRY i don't KNOW.....but i have GOT POJNT

Answer:

Zinc reacts with COPPER SULPHATE SOLUTION to DISPLACE copper and form zinc sulphate.

Explanation:

More reactive metal displaces LESS reactive metal from it's compund.

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Answer:

A PROCESS that INVOLVES rearrangement of the MOLECULAR or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction.

Explanation:

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ANSWER:

C . cellphone

I THINK so......

ANSWER:

B

Explanation:

b is CORRECT answer i KNOW

Answer:

1.562V

Explanation:

E°cell = E°cathode - E°anode

= [0.799-(-0.763)]V

= 1.562V

Answer:

1) Mixtures are impure substances. 2) They can be classified either HOMOGENOUS or heterogeneous. 3) They don't have a FIXED composition and can be mixed in any RATIO

Answer:

An endothermic process is any process with an increase in the ENTHALPY H of the SYSTEM

Answer:

Any COMBUSTION reaction.

A NEUTRALIZATION reaction.

Rusting of iron (rust steel wool with VINEGAR)

the thermite reaction

Reaction between water and CALCIUM chloride.

Reaction between sodium sulfite and bleach (dilute sodium hypochlorite)

reaction between POTASSIUM permanganate and glycerol.

ANSWER:

A = melting

B = evaporation

C = condensation

D = FREEZING

Explanation:

SULPHUR and PHOSPHORUS are quite SOFT, but diamond is very hard.

Answer:

1. False

2. False

3. True

4. True

5. False

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Answer:

RIGHT click on the work SHEET and choose rename. Then type the NAME of YOIR choice

Explanation:

It will open the options

Answer:

A form of chemistry in the Middle Ages which INVOLVED trying to DISCOVER how to CHANGE ORDINARY metals into gold

Explanation:

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