Hardness of water, (a) What is hardness of water? What do you understand ...

(a) What is hardness of water? What do you understand by temporary and permanent hardness?                                                            OR Explain tempora

Emf series and its application,

Aromatic compounds, what is the effectof mesomerism on aromatic compounds.

what is the effectof mesomerism on aromatic compounds.

Determine following sub levels, Krypton ( 36 Kr)   has the electronic con...

Krypton ( 36 Kr)   has the electronic configuration (18 Ar) 4s 2 , 3d 10 , 4p 6    . The 37  electron will go into which one of the following sub-levels: (1) 4f

An element has electronic configuration & atomic weight, An element has ele...

An element has electronic configuration 2, 8, 18, 1. If its atomic weight is 63, then how many neutrons will be present in its nucleus: (1) 30      (2) 32      (3) 34

Chemical bonding, H2,Li2,B2 each has bond order equal to 1 , the order o...

H2,Li2,B2 each has bond order equal to 1 , the order of stability is

Nitroalkanes, Physical properties of nitroalkanes

Physical properties of nitroalkanes

Calorimetry, An unknown amount of copper, at 95 degrees C,, is placed in 10...

An unknown amount of copper, at 95 degrees C,, is placed in 100 g of water at 20 degrees C. It reaches temperature equilibrium at 60 degrees C. What is the mass of the copper?

why do soaps not work under hard water , The Ca 2+ and Mg 2+ ions in har...

The Ca 2+ and Mg 2+ ions in hard water form scum with soap. Therefore they don''t form lather and therefore don''t clean the dirt.

Theory ofindicators, how to make assignmant//

how to make assignmant//