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PROTIP: all you need is a very breif understanding of some concepts in prelim chem... you wont see any prelim content in the HSC exam

:angry::angry::angry:fffffffffffffffffffffffffff

hey, whered that 1 come from :p

are you refering to geometical proof's only? well theres circle geometry in the mx1 course, whcih requires alot of proving (like why angle x = angle y etc etc)

Physics isnt hard, you just need to keep studying the hard concepts until something click and it makes perfect sense. (tl;dr the stuff u learn is actually interesting) I know what did my head in the most was Special Relativity. At first I was like "ok sure whatever", but after a while it began...

Ok in crude oil, theres a mixture of different length alkanes and alkenes (by length im refering to the number of carbon atoms in the chain) including methane (C1), octane (C8), parrafin (C20 - C40) . Petroleum is a liquid containing hydrocarbons of C5 - C12 length (hydrocarbons shorter than...

Quick formula for concentration questions: C1V1 = C2V2 C1 = 10M C2 = 0.1M V1 = unknown V2 = 5L 10 * V1 = 0.1 * 5 V1 = (0.1 * 5) / 10 V1 = 0.05L Or 50mL So 50mL of 10M HCl is needed to make 5L of 0.1M HCl solution The longer method of doing this is by calculating the moles. C = n / V n(Hcl) =...

Ok when you see an extended response question, think what the marking criteria for the question is and use that to structure your response. For example, lets look at the 2003 Industrial Chemistry extended response question: "Assesss how environmental issues have been addressed in an industrial...

Hey, I was confused too when i saw the 07 quesiton. The conquering chemistry textbook claims that the Mercury process was developed as a response to the issues associated with the diaphragm process (i.e. use of asbestos, impure product from NaCl contamination etc) But when you think about it...

Re: so, who else is fucked for trials? i need some reassurance that im not the only one totally F'd for the trials... im confident in everything except English :( I'm not a strong writer when it comes to exams... and when my teacher saw the CSSA trial paper, she cried.

me nd my mates are goin up to the entrance for 2 week.. well make it fun, just hanging out on the beach nd shit will be enough for me if u guys are organising a beach party while ur up there, let us know, were going up there (a big group) end of november, leaving mid december

my understanding is that it is a renewable resource(seeing its extracted from plants, using energy from the renewable sun)... BUT in a commercial sense its not renewable seeing the amount of time and land required to meet demand is not feasible (too expensive, environmental issues etc etc..)

math in focus for school fitzy for harder questions past papers for practice :D

ZnO (s) + C (s) --> Zn (s) + CO (g) All the species in this reaction are in a 1:1 ratio So the number of moles of ZnO = number of moles of Zn Therfore Number of Moles (Zn) = 0.2 Calculating Mass: N = M / MM MM = 65.39 M = N * MM = 0.2 * 65.39 =13.08g of Zn Metal

my teacher tell us to think of the fool as lears conscience, and theres a few good quotes (thou none with me) to support that argument. He makes alot of comments on Lear's flawed character, which Lear should be able to see, but ignores due to his excessive pride. Also explains the Fools...

my friend said this to his gf during sex "bit the pillow cause im going in rough"

i have decided you are fucking awesome, u winrar

we just finished the 3 core modules just started industrial chem our teaher wants to finish the module in 4 weeks :( (after school lessons)

Wow thanks a heap for that list... ive got a prac exam 2morrow, and two outcomes in the exam notification mentioned accuracy, reliability and vailidity. :D:D

I solved this one using substitution: sin^2 3x sub 3x with u becomes: sin^2 u Differentiate u = 3x and u get du = 3dx 1/3 F sin^2 3x . 3dx substituting u becomes 1/3 F sin^2 u .du Now we intergrate: 1/3(1/2U - 1/4sin2u) +C Substitue u with 3x = 1/3(1/2*3x - 1/4sin2*3x) +C = 1/3(3x/2...