CHEM AND BIO HELP AND TIPS HERE

[guMnam]

ans is C for sure ..

try to write an equation for each ..
Cu  +  H2SO4  ----> not possible as Cu is less reactive so cannot displace H2 therefore Cu as a  metal is present and no ions

Cu(OH)2  +  H2SO4  ---> CuSO4  +  H2O
this is a neutralisation reaction .. so salt and water are formed .. here Cu+2 are present Cu⁺²SO₄^-2 = CuSO4

CuCO3  +  H2SO4  ---> CuSO4  +  H2O  + CO2
again salt  Cu⁺²SO₄^-2 = CuSO4

so check 2 and 3 so the ans is C

Thanks

[DaeThen]

i have my biology paper 3 on monday...thts 2 days frm now...any ideas on how to ace it...i aced the paper 6...and i wanna do the same to paper 3 any tips of some sort...?

[Vin]

i have my biology paper 3 on monday...thts 2 days frm now...any ideas on how to ace it...i aced the paper 6...and i wanna do the same to paper 3 any tips of some sort...?

aced paper 6 .. paper 3 wont be tht a prob this time paper 6 was literally lik p3 or thts wat i felt .. study ur notes/guide if u hav/ textbook .. know everything from the syllabus and dont miss out the smallest thing for it best of luck !! which country ??

[Baladya]

Study the whole book, solve a couple of past papers and check the ones u had doubt on b4. Study tests, nutrition, Ecology (food pyramids and stuff) and geneatics(mitosis, XY, Malaria, genatic sh*t) ofc study everything but these are the stuff i remember that are very important

[Shazizzzle]

We're all screwed for Bio P3. VERY BADLY.

[guMnam]

We're all screwed for Bio P3. VERY BADLY.

y do u think soo???

[Baladya]

We're all screwed for Bio P3. VERY BADLY.

HHAHAAH Just like Gymnan's signiture xD

[Shazizzzle]

y do u think soo???

Umm, maybe because...
THERE ARE ONLY TWO DAYS LEFT AND I HAVE YET TO START THE SYLLABUS.

[DaeThen]

aced paper 6 .. paper 3 wont be tht a prob this time paper 6 was literally lik p3 or thts wat i felt .. study ur notes/guide if u hav/ textbook .. know everything from the syllabus and dont miss out the smallest thing for it best of luck !! which country ??

IM FROM PAKISTAAANN BEEATCH!!! ...but i live in the dubai...

you...?

[Shazizzzle]

IM FROM PAKISTAAANN BEEATCH!!! ...but i live in the dubai...

you...?

Paki. Riyadh, KSA.

[guMnam]

Umm, maybe because...
THERE ARE ONLY TWO DAYS LEFT AND I HAVE YET TO START THE SYLLABUS.

hah then yea u r..

[Shazizzzle]

No, I'm not screwed. Just have to revise it all again. :/

Oh well, Best of Luck!

[Baladya]

Umm, maybe because...
THERE ARE ONLY TWO DAYS LEFT AND I HAVE YET TO START THE SYLLABUS.

hmm... I never looked in the syllabus 0.0 I know its wrong but screw that i only knew its important very late. I always just studied from three diff books and took all the important sh*t xD

[Fastal]

guys can someone tell me exactly what to write if a questions come about the nitrogen cycle

i dont understand, which kinds of bacteria do what like which one makes the N2 to ammonia and than the ammonia to nitrates etc. which kind is rhizobium?

[Baladya]

guys can someone tell me exactly what to write if a questions come about the nitrogen cycle

i dont understand, which kinds of bacteria do what like which one makes the N2 to ammonia and than the ammonia to nitrates etc. which kind is rhizobium?

Nitrogen Fixing Bacteria change N2 (nitrogen in air) to to Ammonium. They are found in root nodules of leguminous plants (for example: peas and beans)

Then the Nitrifying Bacteria takes that ammonium and converts it to Nitrites and Nitrates.

Decomposers decompose dead organisms and wastes to ammonium.