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thanks

ah i think the H+ ions in acids act as a catalyst in the conversion from Fe(OH)2 into Fe2O3.xH20 (RUST)

i learnt to test for phosphate you make the solution alkaline by adding NH3 and then add Ba2+ and you get a white ppt

In fermentation what are the states of glucose and ethanol cos i am doing a multiple choice and one has glucose as aqueous and ethanol as aqueous and the other as glucose as solid and ethanol as liquid i thought that glucose was aqueous and ethanol was liquid btw are fuels such as octane...

do you have to know adv./dis. for specific radioisotopes? i thought it was just in general if not what are the advantages and disadbantages of cobalt 60 and technetium 99m

i suppose less energy would be used in combustion

who enjoys creative writing?

soaking the iron in acid would increase the rate of corrosion which is undesirable. you use acid for lead and copper

Re: Is itr eally neccesary to memorise the precipitation reactions and the processes so do i have to know anything about them or just say like dissolved oxygen can be measured using the winkler method

i'm a bit confused. isn't CH3COOH acetic acid so it would be acidic oh i just realised is it because u have Na+ and OH- which is a strong base so strong base plus weak acid gives weak base

Re: Is itr eally neccesary to memorise the precipitation reactions and the processes ????????

Re: Is itr eally neccesary to memorise the precipitation reactions and the processes wtf are EDTA and the winkler thing. we definitely never learnt that. for dissolved oxygen could u do electrolysis and then say the product(not sure what it would be) is proportional to DO

number ten was tough aye what did everyone get for that??

do all your schools determine dux on school ranks or something?

+1. i asked board of studies they said these were right

hey guys what u get i got ABBCDBACCBADCBDBACDD

ohhhh i thought always thought it was just because it was a strong acid and weak base the resulting salt would be weakly acidic, had no idea about the water thanks

so hygroscopic is whwre it 'absorbs', for want of a better word, water from the atmosphere

what would 68/84 align to approximately

no i had 5C3(1/5)^2(4/5)^3 think i got confused by the 5 questions