emf = -Wb/t therefore at a certain time, the emf would be - times Wb. for eg when t=6, Wb=-2 so emf=-x-2 =2 when t=6. hence the answer is d. I don't think it's the derivative since it is the induced emf not the rate of change of the magnetic flux
dont worry you'll get in. and international studies are popular nowadays. I wouldnt mind doing it. get to go to other countries for free.. well I think uni pays it for you.
cathode produces hydrogen gas but hydrogen gas is made through 2H+ and 2e- and those electrons came from Zinc thus zinc acting as a reductant to initialise the reaction
that's correct cos Zinc is oxidising thus it is a reductant as it reduces hydrogen. But you can also argue that Hydrogen is a stronger oxidant (which was the other answer) as hydrogen causes zinc to oxidise. But I think Zinc starts the redox reaction so yeah I answered Zinc is the stronger...
aiight. macquarie's a good uni.. wouldnt mind going there. and wollongong? thats heaps far. are yyou like gonna live there or something? and what course?
if you are having problems, I'm more than happy to help. Just send me a message in my profile or reply in this thread and I'll try to answer asap.
option module: Industrial Chemistry
Past papers, past papers and past papers. cliched I know, but its the best advice there is.
or just do questions from textbooks plus know what you're actually doing before attempting any questions. If you do past papers without any knowledge of what you are doing then you're pretty much...
lol yeah had a classmate that was Mauritian. might go unsw or uts.. but i'm leaning towards uts atm. much closer to the station plus 1 year internship during the course in engineering. what about you?