chinese is another stupid sub i will fail. cow dung man. hahax. now like got nthg to scold liao. lols.

tml a math n chem. sian. both oso need to study de, considerin i dunno wad the shit is being said. wow. lovely. i dun even noe wad basics like percentage shit n volumetric shit. im like so dead. literally.


1) No. of moles = no.of particles/ Avogadro constant

2) No. of moles = mass/ molar mass

3)No. of moles = volume/ molar volume

4)Concentration (gdm-3) = mass/ volume of solution

5)Concentration (moldm-3) = no. of moles/ volume of solution

6)Concentration (moldm-3) = concentration (gdm-3)/ molar mass

7) (MacidVacid)/ (MbaseVbase) = n1/n2

*buy me a nice coffin pls*