Re: Does anyone agree that the Preliminary Exams are much more difficult?
It all depends on your school; if they make their own or they buy them. I found my 3u maths exam alot easier than the tests we did earlier on the year.
I've already for a few formulas, wondering if I'm missing any? So far I got:
n = N / N(avo)
molarity = n / vol
n = m / MM
c = n / Vol
c1v1 = c2v2
[DELTA]H = -mc[DELTA]T