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Number of orbitats in h sub-shell is: (1) 11 (2) 15 (3) 17 (4) 19 Ans: 11
who formulated the laws of chemical combination?
'Cohesive energy' : In a chemical bond, it is the energy needed to dissociate a solid into isolated atoms or molecules as appropriate.
A first order reaction takes 69.3 minutes for 50% completion. Set up an equation for determining the time needed for 80% completion of this reaction.
Why do zinc hydroxide, aluminium hydroxide and lead (II) hydroxide dissolve in excess aqueous sodium hydroxide?
#question.affect of solvent on rate reaction
Q. Define Enthalpy and Calculate the Enthalpy of a system? Ans. Enthalpy is a measure of the total energy content of a system. It is represented by a big H. Change in ent
Q. Evaluate precentage Proteins in Milk ? Milk comprises of casein, lactoalbumins and lactoglobulins. About 82 per cent of the protein in milk is casein and the remaining prot
On analysis, a certain compound was found to contain iodine and oxygen 254 gm in the ratio of of iodine and 80 gm of oxygen. The atomic mass of iodine is 127 and that of oxygen
As electron moves away from the nucleus, its potential energy: (1) Increases (2) Decreases (3) Remains constant (4) None of these Ans: Increases
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