Today's jun rong birthday, well happy birthday!
Not the main pt though ( no offense to jun rong xp)
Well yesterday i studied bio :) the whole sec 3 syllabus!
Today is chem! Dammit mole concept is killing me... I can't remember the formula!!!
Okok wait let me revise~ [ those ppl ( u noe whom i refering to)... pls refrain from reading the chem section n pls carry on to the last part >< ]
concentration= no. grams(mole)/vol of the solution( in dm3)
So thus no. of mol...
no.of mol= concentration( mol/dm3) times vol.of solution (dm3)
Molar vol. of the gas is 24 dm3...
percentage yield= actual mass of the product/the theorical mass times 100%
percentage purity= mass of actual pure substance/mass of sample times 100%
Kk done!
But idk tis will help but its worth the try... ><
( Hav a feeling anyone reading tis will kill me or smth... *shudders*)
T.T
Well anyways [ bac to being :) ]
Happy birthday jun rong! ( if ya reading tis...)
Appreciate ur sec 3 yr! Cherish it! Cos in sec 4, life is total HELL! ( not onli refering to ur hw load though, its also to A maths etc... xp)
*
OK! bac to my chem!
T.T