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Anybody know the answer to question 5a of the catholic trial this year? Id really appreciate it. Thanks.

How is neutralisation a proton transfer reaction? Thankyou.

"Account for the fact that the composition of steel alloys can determine its properties such as corrosion resistance." I know that steel alloys can be corrosion resistant when you add certain metals to them, but WHY!? Thankyou.

Thanks everybody.

Yeah, thats what I have been doing. But still, can you define what a transformation is?

I dare anybody to answer that question succinctly and correctly. I certainly dont know the answer, yet I have been studying the goddamn things for the last 6 months. Good luck.

Could anybody help me here? For the love of God? I just dont get it. Is one the opinion/stance, and the other the action taken? Howcome all these sample answers then, like in the macquarie revision guide, talking about actions taken by churches in response to war and shit when the...

thanks mate

Sure, its just that it has graphs as the answers, which I cant really draw or anything so ill describe them instead. A beaker of water has a pH of 7. When drops of sulfuric acid are added the pH changes. Which graph most accurately shows the pH of the solution as sulfuric acid is added to...

Yeah, I did that... its 0.12 by the way, and that still doesnt work.

Hey guys, 1020 mL of water is added to 240 mL of a 0.12 mol L-1 potassium bromide solution, and the mixture is thoroughly stirred. The concentration of the potassium bromide is now closest to:- A. 0.020 mol L-1 B. 0.024 mol L-1 C. 0.12 mol L-1 D. 0.0288 mol L-1 I keep getting D for...

Hey guys, When drops of a strong acid, say sulfuric acid are added to a solution every 5 seconds, howcome the Ph drops after the first drop, and then stays down and doesnt change. I thought that as more and more drops of sulfuric acid were added, the ph would keep decreasing, as the...

Hey guys, can you determine the ph of a solution if an an acid is dissolved in it, e.g. carbonic acid, but you dont know the volume or concentration of the solution or the amount dissolved?

Hey there fellow economics students, I have no idea about this dot point in the syllabus, mainly because my leading edge text book does not explore it in much detail. It says "Use supply and demand diagrams to explain how the value of a currency is determined under a variety of exchange...

Anybody know any good websites about the effects of acid rain on Lakes and rivers Trees Buildings Your help is most appreciated.

Cheers, thanks heaps.

Hey fellow chemistry sufferers, How have these inventions "affected the level of pollutants in the atmosphere since the industrial revolution." The automobile Catalytic converters Power generation Thanks heaps.

God thats useful! Thanks heaps chemcoach!

Hey fellow chemistry sufferers, I dont know if any of you are now suffering this assignment or have in the past, but there is a 6 mark (out of 35) question asking you to: "Describe in detail the various methods for measuring atmospheric levels of pollutants in the atmosphere around the...

Hello fellow chemistry sufferers, Why on earth does the dehydration of ethanol to ethylene require a catalyst, and what catalyst is this? Any help would be much appreciated.