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Vinyl Chloride - Chloroethene Styrene - Ethenyl Benzene

For this one I'm a bit iffy on it and did it this way: 0.200 absorbance/5 ppm = absorbance of 1 ppm of nickel 0.500/absorbance of 1 ppm of nickel = number of ppm of nickel in the second solution so I got 12.5 ppm 12.5/1000000 x 100mL = amount of nickel ions in 100 mL when reacted with...

I think we learnt it as one step with appropriate conditions i.e. 450 degrees celsius, 1.5-2 atm and excess of oxygen.

I could have sworn that seventhroot did not do chem for HSC..but I might be wrong lol

20mL of 15M H2SO4 50mL of 2M HNO3 100mL of 0.00001M HCl H2SO4 -->2H+ + SO4 2- 0.02L (20mL) x 15M = 0.3 moles of H2SO4 H2SO4 ratio with H+ 1:2 Hence 0.6 moles of H+ produced (theoretically, though ionisation of HSO4- is highly dependent on concentration and rarely occurs). HNO3 -->...

Wow so lucky, I only get Fitzpatrick >.<

Buy this now, only $78.95 https://cengage.com.au/product/title/maths-in-focus-mathematics-preliminary-course/isbn/9780170226431 enigma recommends it to every student who desires to achieve a state rank in mathematics.

I'm starting year 12 soon, so I wanna make the best of these holidays. Currently maths is one of those subjects which I have neglected in 9 & 10, and sadly it's come to bite me back on the @$$. One of the main issues with it is that I don't practise enough (obviously) but when I do, I feel that...

Just say that you didn't want to do 4U, I mean, no one can tell the difference....right? Edit: On a more serious note, I heard somewhere that theoretically your school cannot prevent you from doing a subject and that you can just ring BOS up to get it fixed or something, can anyone confirm this?

Basically what Seventhroot is trying to say is that BOS only looks at the internal rankings and the relative gap between each of the ranks. The actual marks of your HSC exam is determined by the external exam, in which the highest external exam mark will be used as the highest internal...

Psshh Astroman stole that quote off me :3 But to OP, 99.95 is not solely dependent on intelligence, it's the ability to maintain consistent studying throughout the year and a bit of luck during your exam periods :3

Is taking a break recommended? Cause currently, I hope to improve in the subjects that I did crap in prelims lol, and maybe look over the syllabus for y12.

Fshs generally gives their letters around late September to October I believe, or you could possibly accepted early next year if there is one lucky sport available. But with your results you're pretty much guaranteed to get into most schools provided you did well in their respective entrance...

I did my legal exam a few days ago so I hope I can help :3 This dotpoint is referring to political, civil, social, economic and cultural rights rights generally (however there are more e.g. Environmental etc). Since it is an identify question you basically just have to memorise some of the...

For determining molar ratios etc, from past experiences, I've learnt that you rarely go into the components of molecules and its ratios, unless it asks for something in relation to the molecular weight or the percentage of a certain molecule i.e. so you rarely if ever, need to think that...

NOTE:When I write M after a numerical value, it stands for Moles/L, so concentration form. 1. Write out the balanced equation: Pb(NO3)2 (aq) + 2NaI (aq) --> PbI2 (s) + 2NaNO3 (aq) 2. Plug in all the given info: 0.1M 0.1M 3. Most important step (probably), find...

Yes I have read your guide strawberrye ,very informative :3, btw thanks guys for the advice! And um just another question, how do you maintain motivation throughout the year? I mean there are some times where I'm so pumped to do well cause of horrid marks, but then the next few days, this...

I'm currently nearing the end of my preliminary years, and I want to establish a better study routine for y12 (not so organised in year 11 >.< ). So I'm just asking for some advice on how to achieve an ATAR >99, I know obviously that there is no guarantee even if I study like 24/7 etc, but like...

This might seem dumb, but I just realised that Rumbleroar is a female...LOL But in all seriousness, there are two subjects that I want to mainly improve from perlim to HSC and I was wondering if you could give any advice for it :P (Eng. adv and Maths) For english like how do you jump from a...

"What would be the total amount of gas produced when 400g of charcoal is reacted, assuming equal amounts are consumed in each reaction", so when they say this, they mean that the maximum amount of charcoal used is 400g, hence when they say "equal amounts are consumed", like previous posts...