Ran out of time and ended up not having enough to attempt the 5b because I skipped it earlier after panicking and wasting lots of time doing random scribbles before I realised I should do simultaneous eqns. Just as the invigilators were saying 'Stop writing now please' I was writing my answer for the last question. Think I might have only just got an A so I'm a bit gutted because I knew how to do everything on that paper, just didn't have enough time to finish it :/ Sucks when that happens. Both times i've sat Chem1 I ran out of time as well, I don't know what it is, lots of other people manage to finish early, but it's damn annoying.