hmph..im quite angry with the stupid chem paper
cos my teacher wrote the question wrongly
cos she wrote on the paper the mass of PbO2 is 2.50g supposed to be 5.00g
then supposed to find percentage purity after dilution and titration
then the percentage purity is more than 100%
zzzz...nvm
lets see what i will do during march holidays
1)study for maths common test
2)go for pa camp on 12-13 March
3)buy books
thats about it
i think i am damn free as compared to other people
and the questions for maths are so damn few