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SbPh5 is Square pyramidal

Phosphoranes adopt atrigonal bipyramidal molecular geometrywith the twoapicalbonds longer than the three equatorial bonds.

Hence, option (b) is correct.

a is 3, b is 5 ,c is 2 d is 2

The shape of a AB5 molecule is Trigonal bipyramidal

Eg. PCl5

solution?

1.

2.

3. 2p 3s 3d 4s 4p

4. falseBohr's theory is only applicable to hydrogen.

Chloroformis an organic compound with formula CHCl3. It is one of the four chloromethanes. The colorless, sweet-smelling, dense liquid is a trihalomethane, and is considered hazardous. Several million tons are produced annually as a precursor to PTFE and refrigerants, but its use for refrigerants is being phased out.

Give examplesofthefollowingfromyoursurroundings mathematics

2,4,4-trimethylpent-2-ene.

This is because of the varying concentration of the total dissolved minerals in the water .When we see that the water is tasteless that's means we are talking aboutthe pure water whichdon't have any taste.But the water we drink have the different amount of minerals and dissolved solids in it which impart the taste in water,and because different place water have different concentration of mineral so their taste also differ.

Moreover these mineral are important for human health also but upto a level that's why in a water in bottled we buy from market is known as mineral water. Also, each company mentioned the concentration of minerals on the mineral water bottle.

I don't know what to do about it

pure substance element:graphite, diamond, iron.compound: distilled water,petrol,carbon dioxide

mixture.heterogeneous mixture : homogeneous mixture :milk,tap water,soil

sodium is oxidised to form sodium oxide

1) substance oxidized- 4Na,substance reduced- O22) substance oxidized - H2 , substance reduced - CuO

In laundries and in softening of water aswashing soda.

In the manufacture of glass,sodium silicate, paper,borx,soap powder, causticsoda,etc.

As a laboratory reagent.

In textile and petroleum refining.

For the preparation of various carbonates of metals.

UsesofWashing Soda:Sodium carbonate (washing soda) isusedin glass, soap, and paper industries.It isusedin the manufacture of sodium compounds such as Borax.Uses of Baking Soda:Sodium hydrogen carbonate is also ingredient in antacids. ...It is alsousedinsoda-acid fire extinguishers.

uses of baking soda (cooking soda): 1) it acts as mild antiseptic2) it is also used as soda-acid in fire extinguishers3) sodium hydrogen carbonate ( baking soda ) neutralises excess acid in the stomach and provides relief

uses of washing soda ( sodium carbonate ) :1) it is used in glass, soap and paper industries2) used in manufacture of sodium compounds such as borax 3) can be used as cleaning agent for domestic purposes4) used for removing permanent hardness of water

Chlorine is produced on a large scale by any of a number of different methods:

1) By electrolysis of a concentrated solution of sodium chloride in water. Hydrogen is generated at the cathode and chlorine at the anode. At the same time, sodium hydroxide is produced in the electrolyte; hence, this process is often referred to as chlorine-alkali electrolysis.

2) By oxidation of hydrogen chloride, in which gaseous hydrogen chloride mixed with air or oxygen is passed over pumice in contact with cupric chloride as a catalyst, as shown in the following equation:

4HCl + O2 -----> 2H2O + Cl2

Uses of chlorine:(i) Chlorine is commonly used as an antiseptic and is used to make drinking water safe and to treat swimming pools. (ii) Large amounts of chlorine are used in many industrial processes, such as in the production of paper products, plastics, dyes, textiles, medicines, antiseptics, insecticides, solvents and paints.

When hard water is boiled at home or in industries, it leaves deposits of calcium and magnesium salts in kettles, hot-water pipes, boilers and radiators. These deposits reduce the efficiency of boilers, kettles and pipes and can cause blockages and even bursting of the boilers.

kindly post the options as well.

thnx

who is rajuv gadhi ?

let the mass of oxygen be x , and mass of nitrogen be 4x.. as given in question.

now moles of oxygen be x/16 and , moles of nitrogen be 4x/14

so, ratio of their molecules is

O/N = x/16/(4x/14) = 14/64 = 7/32.option C.

this came in JEE MAIN 2014. I remember.

Please post complete question

Suppose we take 1 mole of CH4 Weight=16gm And 1mole C2H6 weight =30gm Now, 1 mole of both CH4 and C2H6 occupy 22.4L Therefore when mixed Total weight of mixture=16+30=46 Total volume of mixture=22.4+22.4=44.8L 44.8L of mixture weigh 46g So,2.24L of mixture weighs=( 46÷44.8)×2.24=2.3g

K.Emax = energy of incident radian - Work function = 6.2 -5 = 1.2 eV = 1.2*(1.6×10^-19) = 1.92 × 10^-19 J

Suppose we take 1 mole of CH4

Weight=16gm And 1mole C2H6

weight =30gm

Now, 1 mole of both CH4 and C2H6 occupy 22.4L

Therefore when mixed Total weight of mixture=16+30=46

Total volume of mixture=22.4+22.4=44.8L

44.8L of mixture weigh 46g

So,2.24L of mixture weighs=( 46÷44.8)×2.24=2.3g

Option B : 55 is correct answer

thanks

thanku so much

for an elementary 2nd order reaction , r should depend on both A and B equally

so, r = k[A][B]

option d

no of moles = 4.25/17 = 0.25 mol of NH3.1 mol of NH3 contains 6.022*10^23 molecules.0.25 mol NH3 contains 0.25*6.022*10^23 = 1.5055*10^23 molecules.1 molecule of NH3 contains 4 atoms.

Thanks

the option 2is the answer of this question

the answer of this question is the option no 2

as the molecules stick up there.. They will not be able to bounce back there.. and hit again. thus it will cause less pressure in the container than before.

molecular mass of CaCO3=100mole of CaCO3=20/100 =.2 molemolarit of CaCO3=.2/10 =.02LtCaCO3 ------------->CaO +CO2.02 0 0.02-x x xKp =pCO21.16=x*.082*1073x=.013unreacted=.007percentage=34%

it is an example of double displacement reaction as both the cation and anion are displacedalso as barium sulphate formed is a ppt hence precipitation reaction too

ya I get answer

The reaction of bromine water with vegetable oil is a addition reaction. In the reaction of bromine water and vegetable oil, the bromine molecule is adding to the double bond of vegetable oil forming a single product.

Thanks Jai :)

Aluminiumwhen reacts with air formsaluminiumoxide which protects the underlyingmetalfrom further oxidation . Thisis notporous and flaky likerustand itcanacts like a film or protective cover which protects themetal. Soaluminium do notrustsCopper vessel get covered with green coating because the metal reacts with CO2 and moisture to form a surface layer of basic copper carbonate Cu2CO3(OH)2 (commonly known as verdigris), which is green.

The answer is S-S bond, it is because sulphur forms stronger covalent bond than Se and Te and the S-S bond is stabilized bypπ-dπbonding which is absent in O-O (due to absence of d-orbtals) and less effective in Se and Te due to full filled d-orbitals.

Also, the non bonding electron pair of O-O bonds have strong repulsion which makes it weak in comparison with S-S bond.

So, the S-S bond has highest bond energy.

Both alkyl halides and water are polar molecules.The intermolecular force of attractions between two alkyl halide molecules is dipole-dipole attraction. While The intermolecular force of attractions between two water molecules is by hydrogen bonding. When alkyl halides are mixed with water a new force of attraction between the alkyl halides and water comes into play, this new force of attraction is much weaker than the forces of attractions already existing between two alkylhalide and two water molecules respectively. This is the reason that alkyl halides, though polar, are immiscible with water.

Could u post a clear picture please?

I have Posted could u please answer it