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Subject: Chemistry, asked on 21/6/16

if 6 mole of KClO3 decomposed according to the following reaction : 
  • KClO3 ---> KCl + 3/2 O2
  • ​KClO3 ---> KClO4 + KCl
​calculate the moles of KClO4 produced if moles of O2 produced are 3

Subject: Chemistry, asked on 13/5/13

 gm atoms in 62 gm of P4 are...?

Subject: Chemistry, asked on 4/7/19

how much marble of 96.5% purity would be required to prepare hundred litres of carbon dioxide at STP when marble is acted upon by dilute HCl so in this i didnt understand the last step why we divided it with 96.5%

Subject: Chemistry, asked on 10/7/16

calculate the number of atoms of oxygen present in 132 g of CO2 . what would be the weight CO having the same number of oxygen atom?

Subject: Chemistry, asked on 30/5/14

A SAMPLE CONTAINS 200 ATOMS OF HYDROGEN, O.O5 GRAM ATOM OF NITROGEN ,10 TO THE POWER -20 GRAM OF OXYGEN.WHAT IS THE APPROXIMATE NO.OF TOTAL ATOMS ?

Subject: Chemistry, asked on 25/6/13

 Silver halides have low solubilities in water as compared to alkali metals halides. Explain

Subject: Chemistry, asked on 27/6/13

Calculate the mass of 3 g molecules of HNO3 ?

Subject: Chemistry, asked on 27/10/15

For the equilibrium SO3 (g) = SO2 (g) + 1/2 O2 (g), the molar mass at equilibrium was observed to be 60, then the degree of dissociation of SO3 would be? Answer is 0.66

Subject: Chemistry, asked on 29/9/15

The mole fraction of water in a solution containing 117 gram sodium chloride and 900 g of water is

Subject: Chemistry, asked on 4/6/18

if a sample of CuSO4.5H2O contains 64 gram sulphur then calculate mass of hydrogen atom present in sample

Subject: Chemistry, asked on 11/1/16

Boron forms no compounds in unipositive state but thallium in unipositive state is quite stable. explain

Subject: Chemistry, asked on 21/3/19

when C6H5CCl3 is reacted with (Br2/Fe) , why Br is substituted at meta-position. explain briefly.

Subject: Chemistry, asked on 27/3/15

6.02 * 1020molecules of a substance weigh 44mg. what is the molar mass of the substance?

Subject: Chemistry, asked on 18/5/17

The volume of oxygen required for Complete combustion of 20 ml of ethene is
A.30ml
B. 60 ml
C. 40ml
D. 50ml

Subject: Chemistry, asked on 15/7/12

How many molecules approximately do you expect to be present in

(i) a small sugar crystal weighing 10 mg.

(ii) 1 drop of water with 0.05 cc volume.

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