Qualification > Sciences
CHEMISTRY PAPER 1 HERE
hashandgreen:
the answer is ''A'',because,the number of molecules for successful collisions are less and also if the acid is less concentrated,the number of molecules in the same volume present,are less,and hence,less number of successful collisions in the same period of time,and hence,a slower reaction rate.
girl_92:
--- Quote from: hashandgreen on June 11, 2009, 01:26:28 pm ---the answer is ''A'',because,the number of molecules for successful collisions are less and also if the acid is less concentrated,the number of molecules in the same volume present,are less,and hence,less number of successful collisions in the same period of time,and hence,a slower reaction rate.
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this is an ans to which que
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solo_G:
ppl i wud b verry gratful if any1 cud tell me whether aluminium oxide is soluble in water????? ???
esso:
--- Quote from: mena mustafa on June 11, 2009, 01:28:18 pm ---ppl i wud b verry gratful if any1 cud tell me whether aluminium oxide is soluble in water????? ???
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no it is not soluble
MR.BooMBastiC:
--- Quote from: esso on June 11, 2009, 01:30:27 pm ---
--- Quote from: mena mustafa on June 11, 2009, 01:28:18 pm ---ppl i wud b verry gratful if any1 cud tell me whether aluminium oxide is soluble in water????? ???
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no it is not soluble
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aluminium is soluble!!!
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