_deloso
Member
Re: CSSA Chemistry 2011
but I thought the question asked "the amount of diluted water" to change the concentration to 2.51... fahhh so I just wrote the total amount of diluted water. didnt think it would be the amount of diluted water added.
I wrote total water. which was i think 0.451 litres or something. So it said the amount needed to be added? dammit!! I was thinking of subtracting from the original. aarghhh!!!DAMNIT i did total water =(.. 1 more lost mark there. fml!
but I thought the question asked "the amount of diluted water" to change the concentration to 2.51... fahhh so I just wrote the total amount of diluted water. didnt think it would be the amount of diluted water added.