1) explain why lakes and sea freeze from the top downwards.
2) write short note on polywater .
3) what is lime softening.
4) explain in accordance with the VSEPR prediction why the bond angle of water is slightly less than the one observed in tetrahedral shape.
5) explain why covalent compounds have a very low solubility in water.
You must summit 2/05/2015. 10am.
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1) lacke freeze from the top downward because ice is ess than water, when water is in solid state (ice) it is less dense to water at liquid state
ReplyDelete2)Poly water is a form of water that was as think as a syrup and has a high boilling point. By roqeebah fatali
ReplyDeleteLime softing is the process of using slake lime in removing temporary hardness of water. By roqeebah fatali both in
ReplyDeleteNo1