I have questions: to log into your student online thingo ur student number is 8 digits right? and your pin HAS to be 4 digits? I cant even access mine :|
Was modelling the equilibrium thing part of industrial chemistry or something?
Edit: And yup you talk about natural buffers and how that keeps pH constant and stuff allowing you to live
What was question a for shipwrecks i think i read the question wrong :3 and did what did everybody get for question d that was a weird question pretty easy exam on the whole i think i made a couple of mistakes in calculation but 80+ probably
Cmon guys 8 hours is more then enuff time to revise and just to make sure when do we HAVE to use pencil? Scientific diagrams, tables what else? What about for drawing co-ordinate covalent bonding and stuff?
But isnt time always the indepedent variable? So if u drew a graph of the different metal and the amount of rust you would do the amount of rust on the y-axis and time for the metal to corrode on the x-axis wodnt u thats what confuses me :S
I have a chemistry question, for the syllabus dotpoint that says:
Identify data, select equipment, plan and perform a first-hand investigation to compare the rate of corrosion of iron ad an identified form of steel.
Would the independent variable be the time for the rust to occur or the the use...