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"Cyclopentane has the formula It
means that 10 atoms of carbon
combine with 5 atoms of carbon to
complete their octet . SEE in the figure
.It is the electron DOT structure of
cyclopentane."....

The presence of alkoxy GROUP (−OR) in aromaticethers activates the aromatic RING TOWARDS electrophilic substitution reaction in the same way as in phenol.

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Corbanic acid is a diprotic acid. After neautralisation it is still CONSIST of one H that can be displaced.on the other hand in HCI there is no more replaceable H. Due to this corbanic acid SALT but HCI doesn't GIVE the same due to this HCI is STRONGER than conc.

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DISTILLATION and FRACTIONAL distillation.

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28 is RYT answer
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When IRON NAILS put into copper sulphate FIRST it is in blue there TAKES REACTION between them and coppersulphate changes its colour from blue to light green. As iron is more reactive than copper

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Mole fraction of C2H5OH=   .................1

Let the moles of C2H5OH= X

Now density of water = 1 (given)

And the weight of 1000ml of water = volume * density (from density = mass/volume)

= 1000 x 1=1000g

Therefore moles of water = 1000/18= 55.55 mol (18g is MOLECULAR mass of water)

Also mole fraction of C2H5OH= 0.040 (given)

Putting the VALUES in equation 1,we get

=0.040=X/X+55.55

=0.040X+2.222 = X

OR X= 2.3145 mol

Molarity of solution = 2.314 M

Because we cannot USE helium or other gases . LIQUID OXYGEN and liquid hydrogen can be use as FUEL of rockets neither we cannot use in motorcycles

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Answer:

1. PHYSICAL
2. physical
3. CHEMICAL
4. physical
5. chemical
6. chemical
7. chemical
8. chemical

Explanation:

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COPPER will REPLACE silver from silver NITRATE cuz copper is more REACTIVE than silver

HNO3+3 HC I ...............

2-propanol (IUPAC NAME)

It will BECOME a LONG ANS. so how i can do it

6.022*10^23...............................

Because it has very HARD and it has more ATTRACTION FORCE between TWO PARTICLES

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ELEMENT

1) An element is usually defined as the simplest or the starting form of a  with a definite physical property and chemical property and which after all can neither get broken into nor built by them into or from simpler SUBSTANCES by any residing chemical and physical method.

This definition is usually regarded as incorrect since, many physicists and chemists have show that the elements can be broken down into and similarly get synthesized from simpler substances. With the much needed breakthrough and discovery as a fundamental unit of matter, the definition has been modified accordingly as follows;;

An Element is defined as a total pure substance that contains only one kind of particles and these particles may be shown as either atoms or molecules.

2) Carbon, Sulphur, iron, lead, gold, Mercury, hydrogen, oxygen and nitrogen are some of the examples which are known and familiar with elements. Thus, whereas iron, gold, copper, and so on, contain single atoms or constituent particles which are held together, in several cases, the constituent particles are molecular substances which are containing TWO or more atoms combined together in strong force.

For example, hydrogen, oxygen, nitrogen, so on, consists of molecules, comprising or containing two atoms combined in strong holdings together. The number of elements known to human kind and up to date are 118. Of these, only 94 occur naturally in the nature and in the earth's crust, some with extreme small quantities and the remaining of them are prepared artificially in laboratories through certain nuclear reactions for the benefit of science (approximately 24 synthetically created elements). Naturally occurring elements are distributed throughout the crust of the earth in many significantly varying proportions.

COMPOUND

1) Basically when speaking about a specific normal compound, it is nothing but,,  that have the containment of more than one kind of elements occurring in it or more than one kind of atoms present in the composition.

Furthermore it has been found out that the elements present in a compound are always in a SPECIFIED fixed proportionate by mass. Hence, we can deduce that, and can be defined as the following;;

A compound is a pure substance containing two or more than two elements of combinational bonding or in togetherness in a fixed proportion by quantity of mass and which can also be or get further decomposed into constituent elements by suitable chemical methods. Further performs, the properties of compound are completely different by any means from those of its constituent elements.

2) For a specific example, Water, is a compound containing hydrogen and oxygen combined together in a total fixed proportion of 1:8 by the quantity or component by weight. It can be decomposed into its constituent elements,, that is,, hydrogen plus oxygen by passing some electricity as a mediator through the MEDIUM called water (Note: after acidifying or acidification this will make it a good conductor of electricity).

Now even going more Further,, the properties of water are completely different from its constituents, as,, hydrogen and oxygen. For another example,, hydrogen is a combustible gas or a gas able to perform the phenomenon of combustion, oxygen gas is a supporter of combustion whereas water on the other hand is neither combustible nor a supporter of combustion but it still extinguishes fire!

More or few more examples of compounds (all are points tho that's why) are carbon dioxide, Sulphur dioxide, sulphuric acid, nitric acid, hydrochloric acid, caustic soda, washing soda, baking soda, common salt, copper sulphate, sodium hypochlorite, dichlorodifluoromethane, dinitrogen oxide, calcium oxide, silicon dioxide, isopropyl alcohol, sodium tetraborate decahydrate, Alimunium phosphide, Ammonium CERIUM (IV) nitrate, etc. etc. etc.

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Answer:

Ionic compound

=> The compound which have ionic bond , its called ionic compound .

properties of ionic compound

=> These compounds are CRYSTALLINE solid , hard and brittle in nature only

=> The force of attraction present between IONS is strong so we REQUIRE high energy to break bond then ionic compound have high melting and boiling point

=> These compound are SOLUBLE in polar solvent like water and ALCHOL

=> These compounds are good conductor of electricity

=> ionic reaction is very fast in nature because of ions are inolved during reactions.

The GENERAL NAME of the MATERIAL is COMPOUND

Melting POINT means the point at which the any substance MELT

freezing point means the point at which the substance freeze

BOILING point means the point at which the substance BOIL

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The salts of NITRIC ACID are called Nitrates like Sodium Nitrate ( NANO3)..!!☺☺

salt is a NON METAL because it is a poor conductor of both heat and ELECTRICITY

MNH3 = 1.75 x 10^24 molecules x 1 MOL/6.02 x 10^23 molecules x 17.03g/1mol
(CANCEL out molecules and mol; you'll be left with grams as units).

When you perform this CALCULATION, you find out that the mass of 1.75 x 10^24 molecules of NH3 is: 49.5 grams.

Because it has property to flow and when put in DIFFERENT VESSELS TAKE SHAPE of it hope it will help

As Na has 11 electrons , and its valence shell has 1 electron in 3s orbital. So that 1 electron can be easily removed as it is unpaired. Then it attains a noble gas state. Next , if we want to remove another electron , we should give more energy to remove an electron as they are in noble gas state. Hence, the SECOND IE is GREATER. Whereas in case of MG , 2 electrons are there in its valence shell. So it’s IE is LOWER.

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After burning of carbon fuel UNBURNT carbon particles result in the formation of carbon monoxide gas.in highly poisonous and external y suffocating,it causes BREATHING and RESPIRATORY PROBLEM,it may also proved to be fatal on this way burning of fuel can cause health hazards.


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Higher the calorfic VALUE of the fuel, that it is a better fuel.
As the GASEOUS fuels have higher calorfic value, they are CONSIDERED better fuel than liquid or solid fuels.
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It's a NON metal because it doesn't provide thermal as well as ELECTRIC insulation.

Calorific value of WOOD = 18000 kj/KG

heat energy = 360000kj

Calorific value =heat energy / amount of FUEL

= 360000/ 18000

=20 kg

Originally Answered: Why are impure substances considered a mixture? A mixture contains TWO or more substances that are not chemically combined. MIXTURES are unlike CHEMICAL COMPOUNDS, because: The substances in a mixture can be separated using physical methods such as filtration, freezing, and DISTILLATION.

Incorrect premise I’m afraid - Copper is below ZINC on the reactivity index and THUS cannot reduce zinc cations to the metal. It therefore will not dissolve at all, as no REACTION will occur.

Placing a zinc rod in a copper sulphate solution on the other HAND will SEE a reaction - the zinc will dissolve (as it reduces the Cu2+ ions to the elemental metal for the reason stated above), the blue colouration of the solution will fade and eventually disappear and copper metal will be deposited.

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Volatile and non volatile components when PRESENT as a mixture, the PROCESS of SUBLIMATION can be used.
In this method, the volatile SUBSTANCE is heated to evaporate and the vapours are collected, so that they can be condensed later for OBTAINING the element/compound.

The non-volatile substance STAYS back.

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This can be proved EASILY.
Take a syringe and pull the PISTON out such that air is trapped inside and you BLOCK the other side trapping air.
Now try to push the piston and to an extent you can compress it.
The same volume of air which OCCUPIED LOTS of space, now has only occupied a small space.

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Kclo3

2KCl

O

3

→2KCl+3

O

2




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To do do so I XB CU DIFFICULT do

ONE....it is bromine

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