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It is USED to MAKE SODA by VARIOUS PROCESSES.

THE PROCESS IS CALLED  LEVIGATION

The main CHEMICAL constituent of the oil of cardamom which is RESPONSIBLE for FLAVOR of this oil is cineole.

Total NUMBER of PROTONS and neutrons PRESENT in the nucleus of an atom.

5th element is boron. boron COMES under 3A group in periodic table. boron atomic number is 5. symbol of boron is B.atomic weight is 10.81. melting point is 2573k. boiling point is 2823k. boron occur principally  in the earth crust as boric acid, H3BO3 and as borates. boron is used to increase the hardness of steels. crystalline boron is used in transistor. boron is GOOD NEUTRON observer and t is used as shields and CONTROL rods in nuclear reactor. boranis are used as high energy fuels. for example in rockets. boric acid is used as antiseptic.
thank you
ghousi

Let the MASS of nitrogen be x
Given,14/3=x/9
so,x=14*3
      =42 g

RHENIUM OXIDE(Reo_3)

Gypsum is added to clinker as an additive PREVENTING the settings of the cement, but it is ALSO very effective to facilitate the grinding of clinker by preventing agglomeration and coating of the POWDER at the SURFACE of MILL wall.

Haypiles and compost piles may self-ignite because of heatproduced by bacterial fermentation.Linseed oil in a partially confined space can oxidizeleading to a build-up of heat and thus ignition.COAL can ignite spontaneously when exposed to OXYGEN whichcauses it to react and heat up when there is insufficient VENTILATION forcooling.Pyrite oxidation is often the cause of coal spontaneousignition in old Mine tailings.Pistachio nuts are highly flammable when STORED in largequantities, and are prone to self-heating and spontaneous combustion.Large MANURE piles can spontaneously combust duringconditions of extreme heat.Cotton and linen. When these materials come into contactwith polyunsaturated vegetable oils (linseed, massage oils), bacteria slowlydecompose the materials, producing heat. If these materials are stored in a wayso the heat cannot escape, the heat build-up increases the rate ofdecomposition and thus the rate of heat build-up increases. Once ignitiontemperature is reached, combustion occurs.

The RULE of solubility is 'LIKE DISSOLVES like' i.e. polar SOLVENT dissolves polar molecules whereas non-polar molecules are dissolved in non polar solvents. Haloarenes are non polar in NATURE. So they are dissolved in a non-polar solvent benzene, but cannot be dissolved in a polar solvent water.

Now the half life of the isotope is given 2 hours. After 6 hours the no of half lives will be 3.

So the The AMOUNT of radioactive isotope remaining can be calculated as:

Nt = No X 1/2^n where, Nt is the amount of RADIO isotope remaining. No is the original amount of radio isotope.

N is the no of half lives.

Now let the original amount of isotope is one, then by using the formula we can calculate the remaining of isotope as:

Nt = 1x1/2^3

= 1x1/8

= 1/8

Soap and DETERGENTS help INSOLUBLE particles to become soluble in water. It makes the cleaning easy. OIL or fats are insoluble in water. Soap molecules has two parts- the polar head and the long hydrocarbon tail. The insoluble oil/fat molecules become associated inside the micelle formed by soap molecules with polar hydrophilic (water-loving) groups on the outside and encasing a hydrophobic (water-hating) pocket, which shields the oil/fat molecules from the water MAKING it soluble. Once the DIRT or fat molecules are dissolved in water, it can be rinsed away easily.

Thanks for asking the question.
Xenon is the noble gas. Its compound that has the same structure as IBR2 is xenon FLUORIDE that is XeF2. There is same number of valence electrons in both of them that is TWENTY two. Both have the same MOLECULAR geometry and same bond ANGLES. They are linear molecules.
Hope it helps.

Agitation is necessary to CLEAN clothes because agitation helps to remove DUST PARTICLES that sticks to the CLOTHE and by this way it removes dust particles from the clothe............

No. of MOLES = Given MASS/ molar mass 
= 4.4 / 44 = 0.1 moles

no. of molecules or PARTICLES = no. of moles x AVOGADRO no.
= 0.1 x 6.023 x  
= 6.023 x 

Elements are CLASSIFIED in mendleeve's periodic table in the order of their increasing atomic masses.
merits :-
1. his prediction about discovery of new elements were proved correct.
2. he left gaps in his table so that new elements could be easily fitted.
3. nobel GASES could be placed in his table without disturbing other elements

demerits:-
1. he couldn't define the POSITION of hydrogen and isotopes
2. at some places in his table he put the ELEMENT with more atomic mass before the element with less atomic mass.

Molarity = number of mole of solute/volume of SOLVENT in liters
0.25 = number of mole of methanol/2.5
no. of mole of methanol = 0.25×2.5 = 0.625 mole
WEIGHT of methanol = no. of mole of methanol×molecular weight of methanol
                            = 0.625×32
                            = 20 gram
weight of methanol = 20/1000 kg
volume = weight of methanol/density
           = (20/1000)/0.793
           = 20/793
           = 0.025liter

Our mouth CONTAINS bacteria .these bacteria degrates sugar particles which were eaten by US i.e remaining food .and releases acids.this may produse tooth DECAY.so in ORDER to prevent tooth decay toothpaste is MADE in basic in nature.basic will netralize the acid and gives salt and water

If it is 5%(w/v) then you should add 100 ML of water to 5G of the salt.
If it is 5%(w/w) then you should add 100g of water to 5g of the salt.

w/v - weight in volume
w/w - weight in weight

Saponification is a reaction in which ESTERS(SOAP is formed)
This takes place on BOILING and then adding little of SALT to separate the soap from solution.

They are opposites..
Esterification uses catalytic ACID,avid and alcohol to MAKE esters while,
Saponificatipn uses atleast 1 equivalent SODIUM hydroxide to make acid salt

Protonation refers to addition of H+ to oxygen of OH group. It is easier when O has more electron density, i.e. when nucleophilic character of O is more.
In alcohols the electron density on oxygen is HIGH DUE to localization of its lone pair and electron donating nature of alkyl group. So their protonation is easy.
However in phenols, the lone pair of oxygen is in resonance with the BENZENE RING and thus is delocalized. So protonation of phenols is DIFFICULT.

Any acid is said to be an acid if  there is a proton acceptor to accept the proton donated by the acid. Since water ACCEPTS a proton to FORM a hydronium ion, the acid is ionized.
A DRY strip of litmus and dry HCl in gaseous form do not contain water so HCl does not ionize, but in PRESENCE of a DROP of water, HCl is ionized and releases a proton which turns blue litmus red.

Malleability is a characteristic of materials that allow them to deform under compressive stress. Malleable materials can be formed into very thin sheets by rolling or hammering them. Of all materials METALS have a very high malleability. Even among metals the malleability changes is DIFFERENT for various metals. Metal like silver, gold and aluminum top the list.

And the most malleable metal is gold. A single gram of gold can be beaten into a sheet that has an area of 1 square meter. A sheet of gold can be so thin has is translucent. This makes t useful in many applications, like shielding from harmful radiation, in jewelry, etc
&
Malleability refers to the the property of many metals which ALLOWS them to be deformed easily by hammering or pressing. the most malleable metal is gold. It can be hammered into thin foils only 0.0025 millimetre thick

Other malleable metals, arranged from high to low malleability are silver, lead, copper, aluminium, tin, platinum, zinc, iron and NICKEL.

A characteristics of metals closely, but not precisely, related to malleability is ductility. Metals that are malleable are also ductile. The most ductile metals listed in order of their malleability are gold, silver, platinum, iron, nickel, copper, aluminium, zinc, tin and lead.


HOPE MY ANSWER HELPED YOU.....

1)since the FORMULA is of  so it is a ALKENE is has one C-C double bond i.e. sp² hybridized

2) The BOILING point of Homologues DEPENDS on the molecualr mass i.e. with INCREASE of molecular mass boiling point INCREASES
     
    so since compound C has the lowest boiling point so C has the lowest number of carbon atoms

3) Olefins or Alkene