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my memory has washed
i dont even remember anything related to it, let alone the answer
no no I wrote colourless to blue! though i did write about the pink copper metal deposited there but still!Dude, colour change from blue to colourless is the right answer
Wasn't the answer to that a? The number of moles had to be twice that given in the question. If the volume remains the same and the concentration is doubled, it gives 0.04 moles while the number of moles given in the question were 0.02. Both the volume and concentration were doubled for c which would give the same number of moles as in the question
In second last mcq the B part was about that magnesuim is full reacted right?
But for o.02 moles of hydrogen to be produced, 0.04 moles of hcl should react :s in the equation given in the question, there were 0.02 moles of hcl and hence 0.01 moles of hydrogen na?
Yeah so 0.04 moles of hcl gave 0.02 moles of h2 :S
SHIT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! even in salt analysis, i wrote all the charges wrongt..........crap crap crap
worry about the other papers now....... forget about it, you can't change anything now..... do better in p1 and 2i wrote ZnI instead of ZnI2..
and youve got your grade
i knw theres no chance of getting the mark in the final part of the question, but in the table above, if i wrote all the symbols correct just the '2' missing...will I get marks??worry about the other papers now....... forget about it, you can't change anything now..... do better in p1 and 2
If you wrote Zinc ions and Aluminium ions (full names) then I think the examiner will consider it. If you wrote Zn ions and Al ions, I'm not so sure.
hmmmmmmmm m not sure, there was something mentioned about in an examiner report. check it out
i wrote the symbols, then cx i wasnt sure of the charges i wrote the names...but then i saw I- at the bottom and i thought i shld better go fr symbols...so I cut the names again and wrote symbols instead.... But it was lyk dis: Zn+ Ca+ Al+3 (cx i did remember the charge fr Al
link plx??
i don't remember which yearlink plx??
sorry, just check some random examiner report. They usually mention this type of things
bio is being discussed hr - https://www.xtremepapers.com/community/threads/question-relating-to-todays-atp.25413/
cant find anyi don't remember which year
Ans was c. U had to form the second eq as well ... It was lyk dis - 2HCl+(i forgot the other reactant
) = --- + H2 . So mole ratio is 2:1. Whereas eq in the ques was - H2SO4+ (i dont know wat) = --- + H2. Hence mole ratio here is 1:1. So originally there were 0.02 mols of hydrogen gas
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