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ical alkenes have the same atoms on both sides of the double BOND... ethene... CH2=CH2Unsymmetrical alkenes have DIFFERENT atoms on each side... but-1-ene.... CH3 =CH-CH2-CH3.

o's law states that "EQUAL volume of gasses, at the same TEMPERATURE and PRESSURE, have the same number of molecules"it is an EXPERIMENTAL gas law relating volume of gases to the AMOUNT of subtance of gas present

number of 6 , the element is Carbon.Normally  the total capacity of a shell is  2 n²  where n is the number of shell.So K shell contains maximum of 2 electrons,  L shell contains maximum of 8 electrons and M shell contains a maximum of 18.The way to FILL an atom with 6 electrons is :  K shell contains 2 and L shell contains  4  :   1 s²  ,  2 s²  2 p²  Then  M shell which contains  3s , 3 p , 3d orbitals contains no electrons.========================There are a number of rules to fillin the electrons in an atom.  Madelung energy ORDERING rule :  n + l determines the ORDER in which electrons are filled in orbitals.   n is the principle quantum number (shell number).   l is the azimutal quantum number which tells the orbital s, p, d and F.   The maximum capacity of the orbital is given by  4 l + 2.Aufbau principle states that electrons occupy the LOWEST energy level before filling higher energy level.   Also the order of filling is limited by Pauli's exclision principle.  Further, there is Hund's rule that unoccupied orbitals are filled in before filling in already occupied orbitals.There is a simple rule : the diagonal rule of filling in the orbitals.Each shell contains a maximum of  2 n^2.

73244495995 will be the NUMBER of MOLES in 720 GRAMS of WATER

put some acetone, petrol or perfume it STARTS evaporating by using the ENERGY from PALM and leaving it cool.

er kept in an earthen POT (matka) BECOMES cool during summer because of the evaporation of WATER through the fine HOLES in the earthen pot which MAKES it cool.

ng to RULE the orbital with the LEAST   value has the lowest energy.So  has minimum energy as its value is LOWER than others. will have maximum energy eventhough  and have same value because  has HIGHER value.

meta NITRO PHENOL is aromatic in NATURE and contains 3NO₂ GROUPS

in which both NUMBERS are WHOLE numbers (and not FRACTIONS).EXAMPLE - 2:38:135000:1791

mething CHANGES phase it takes or releases energy to break the intermolecular interactions. The heat is utilized in overcoming the particle-particle attraction forces and hence the temperature REMAINS PRACTICALLY constant. Hope this HELPS

0°C = 273.15 KSO, K = °C + 273.15     °C = K − 273.15answer:- A = 300K – 273.15 = 26.85 ℃             B = 573K − 273.15 = 299.85 ℃

r 250°C it is gaseous because the boiling poin of the water is 100°C.B>> for 100°C it is in both gaseous and liquid because boiling point of water is              100°C so liquid is converting in to vepour so it is PRESENT in both state.           VAPOUR and liquid are in EQUILIBRIUM in this temprature.

stic BAG POLYETHYLENE -CH2-CH2- [ETHENE]  is the monomer unit.for PVC[poly vinyl chloride] PLASTIC -CH2=CHCl [vinyl chloride] is the monomer unit.

natural or artificial process that RESULTS in the formation of a hybrid .two genetically dissimilar plants are taken. these plants have a set of DESIRABLE characters . thee plants have set of desirable characters . these plants are cross -bred (means POLLEN of one plant USE too fertilize ovule of another plant.the resultant plant i.e the hybrid may have favorable characters from both parent plant.

= CH4Ethane = CH3-CH3Propane = CH3-CH2-CH3Butane = CH3-CH2-CH2-CH3Pentane = CH3-CH2-CH2-CH2-CH3Hexane = CH3-CH2-CH2-CH2-CH2-CH3Heptane = CH3-CH2-CH2-CH2-CH2-CH2-CH3Octane = CH3-CH2-CH2-CH2-CH2-CH2-CH2-CH3Nonane = CH3-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3Decane = CH3-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3Alkane END up with suffix "ane".DEPENDING on the number of carbon atoms alkane are divided into Methane (1 carbon ATOM),ETHANE(2 carbon atom) and so on.

n GAS :    V1 = 600 cc      P1 = 3014 cm hgWhen the vessel is connected to another vessel which is empty, the gas OCCUPIES the entire volume.  Then pressure reduces.  If the gas EXPANDS slowly without CHANGE in temperature, then,  Boyle's LAW applies:     V2 = 600+ 300 = 900 cc       P1 * V1 = P2 * V2       P2 = P1 V1/ V2 = 600 * 3014 / 900 = 2009.34 cm Hg

m has the HIGHEST MELTING as WELL as BOILING POINTS.

inumMP = 1768 ℃BP = 3825 ℃

m carbide contains 75% of AL and  25% of C.     So  3 grams of Al  combines with 1 gram of C.       Or,  ratio  Al : C  = 3 : 1Aluminum oxide contains  52.9% of Al and  47.1% of Oxygen.   So  ratio  Al : O  = 52.9 :  47.1  =  1.123 :  1                              or,     3 : 2.671 Carbon dioxide contains 27.27 % of C and  72.73% of O.   So ratio  C :  O  =  27.27 : 72.73                or ,    1 : 2.667    or nearly  equal to  2.671  above.So  carbon and Oxygen combine in the same ratio as they REACTED with ALUMINUM.

higher OXIDE 0.80 gms :   0.64 gm  of metal in the higher oxide.Thus before oxidation, there is 0.64 gm of metal in the lower oxide.So there is 0.72 gms - 0.64 gms = 0.08 gms of oxygen in lower oxide.   and  0.80 - 0.64 = 0.16 gms of oxygen in lower oxide.   The proportions of metal : oxygen in both OXIDES are:                 0.64 : 0.08  =  8 : 1                 0.64 : 0.16  =  8 : 2So in the higher oxide there is DOUBLE the amount of oxygen as COMPARED to the lower oxide.  The content of oxygen that reacts with metal are in the integer ratio :  1 : 2.

mula  for equivalent weight :  E   mass of metal deposited on electrode:  m = 2.4 gms   current STRENGTH i = 10 A    time duration  t = 50 min = 3, 000 sec.   charge = i t = 30, 000 Coulombs      96, 500 m =  E * i * t        E =  96, 500 * m / ( i t )  = 96, 500 * 2.4 / 30, 000 = 7.72    The atomic weight if the metal is univalent :  7.72     The atomic weight if the metal is divalent : valency 2:    15.42  ====================ALTERNATE way to do the above exercise:the charge :  10 A *  50 * 60 sec = 30, 000 Coulombs.        equivalent to   30, 000 /1.602 * 10⁻¹⁹  = 1.8726 * 10²³ protons.  So this many ions with SINGLE charge on them have travelled to the electrode.If the metal is a single charge carrying one (single valency) then:       weight of a metal ion :  2.4 gm / 1.8726 * 10²³ = 1.253 * 10⁻²³  gm       weight of one mole of metal ions :  1.253 * 10⁻²³ * 6.023 * 10²³  = 7.72 if the metal has valency 2 , then its atomic weight will be : 15.438

sium Amino Acid Chelate 2.Magnesium Citrate 3.Magnesium CHLORIDE 4.Magnesium OXIDE 5.Magnesium Glycinate, Malate & Taurates 6.Magnesium Carbonate 7.Magnesium Lactate 8.Magnesium SULFATE 9.Magnesium Orotate

energy is the energy that binds the atomic particles like protons, neutrons and electrons all TOGETHER in one atom.Atomic energy is mainly the energy of attraction in the nucleus.  When two nuclei are MERGED together into one nucleus by FUSION , then a lot of atomic energy is released.When a nucleus of a heavy atom is bombarded with some protons and neutrons at high speeds, the nucleus breaks into two smaller nuclei.  This process called FISSION releases a lot of atomic energy.Atomic WEIGHT is the mass of the nucleus, which is the sum of number of protons multiplied by the mass of protons and the number of neutrons multiplied by the mass of neutrons.====Relation:   Atomic energy is more in the heavier atoms.  When heavier (more atomic weight) atoms are broken, there is more energy.   Atomic weight of the nuclear material changes when atomic energy is released.  In fact the material gets CONVERTED into material of smaller atomic weight, when fission happens.

s reaction is :-CaC₂ + 2H₂O → Ca(OH)₂ + C₂H₂two MOLE of WATER is react with 1 mole CALCIUM carbide to form                                 1 mole of acetylene.for 10 gm calcium carbide mole of acetylene is   =10 G CaC₂       = 0.1560 mol C₂H₂    64.10 g CaC₂ [ M.W]   1 mole of C₂H₂ contain 6.022×10²³[Avogadro's number] moleculesfor 0.156 mol of C₂H₂ contain  = 0.156 x 6.022×10²³                                            = 0.939 x 10²³                                           ≈  9.4 x 10²²

rticles diffuse faster in air when hot and we smell it immediately even we are far . FOOD particles diffuse SLOWER when COLD ,so it reaches us SLOWLY or we have to go close .

dation state is the difference between the number of electrons associated with an ATOM in acompound as compared with the number of electrons in anatom of the element. In ions,the oxidation state is the ionic charge. ex:- NACL   = Na(+1) and Cl(-1).........HOPE its help U

compounds mainly contain C-H bonds and ONE or more of them. They also contain  C-C bonds, single or double.Ammonium cyanate contains bbonds among Nitrogen and Hydrogen.  Cyanate contains among Nitrogen and oxygen.It is an inorganic COMPOUND.  IONIC.

uids are FLUIDS but not all fluids are liquids as fluids ALSO contain substances in gaseous state.liquids occupy the shape of the containerliquids  boils down to their viscosity as fluids have a higher viscosity such as OILS than liquids. Fluids can be gases also WHEREAS liquids arte altogether different than gases.

he arrangement of molecules is very tight or fixed and the molecules does not MOVE           eg:solids like clock,brick etcliquid-the arrangement of molecules is not tight as in solid but LITTLE loose.           eg:liquids like water,oil,MILK etc.gas-the arrangement is not there in gases as such and they move about freely.           eg:NITROGEN,oxygen and other various types of gases etcAnd also plasma is another state of matter but only the 1st three are importantHope u liked it:)

carbamide is an organic COMPOUND with chemical FORMULA CO(NH2)2.the molecule has two -NH2 groups joined by a carbonyl (C=O) FUNCTIONAL group.

mping of water. PUMICE STONE is added in to LIQUID to avoid BUMPING of boiling liquid. pumice stone is pores in structure and its PROVIDE space for air.

is a PURE substance All others are the mixtures of TWO or more SUBSTANCES.

generally have more density than liquids,but the ICE has LOW density than the WATER.so the ice floats on water,which has HIGH density.

are.1.    - j 2.    - i 3.    - a 4.    - b 5.    - h 6.    - g 7.    - f 8.    - d 9.    - c 10.  - E

uice or VINEGAR can be used as ELECTROLYTE in baghdad bomb