As you have said, tetramethylsilane (TMS) is used for the sake of acting as a reference point for the chemical shifts of different peaks. Some reasons why it, specifically, is used for NMR are:
Relatively inert - will not easily react with the organic molecule being analysed.
Low boiling...
it is easier said than done but try to forget what already happened. ur trials and hsc are combinedly at least 60% of ur total HSC mark, focus on whats to come!
When you have UNPOLARISED light passing through the first polariser, malus's law does not apply - only 50% of the intensity of the unpolarised light passes through. The 50% of the light that passes through will have light polarised in the direction of that first polariser. As this light enters...
copped a 13/20 my mod C task for english advanced, and ended up with a 19/20 raw mark for mod C in the externals which gave me an atar beyond my imagination
you never know how a high ATAR can come clutch for uni stuff, besides the obvious entry into the course you want (especially relevant for people going into med where competition is cutthroat). someone i know saved 60,000 dollars worth of fees for their course just because of their ATAR too so im...