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Be wary when using the dilution formula for the neutralisation part of titration, that it only works when the reactants in the neutralisation reaction are at a 1:1 ratio.

I like the candy/chocolates method of modelling it. It's where you have 20 pieces of chocolate or candy on one side of the table, and you take 50% and move it to the other side of the table. Then you take 25% of the 50% that you moved, and move it back to other side. Repeat this process till...

Geez getting so nervous for English Me atm:

What I always say is: "You can never be 100% with your content, there will always be something else that you don't know" This applies to all subjects.

re: HSC Chemistry Marathon Archive I got 11.57, not sure why people are making equations, because the question said that it accidently excess spilt 13.5 mL, into the mixture, indicating that the guy spilt extra Ba(OH)2 into the already neutralised solution. Unless I interpreted the question...

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Re: 2015 HSC Economics Marathon Explain, using examples, how market failure can cause the misallocation of scarce environmental resources - 5 marks

Monetary policy can also change the interest rates via domestic market operations. These changes can influence investment patterns. For example, an increase in interest rates will cause an increase in foreign investment, resulting in a surplus in the KAFA due to capital inflow, and a deficit in...

For questions like these, the two formulas you need to remember are: S = I Y = C+ I So in this question: -40 + 0.2Y = 200 0.2Y = 240 Y = 1200

Something also worth considering is demand-pull inflation occurring when the economy is at NAIRU. If the government uses macro policies to increase AD in attempt to decrease unemployment further, then demand-pull inflation will occur as the increase in demand will cause prices to bid upwards as...

I have a feeling that question 16 will be like question 15 of this years bos trials, but easier of course.

Re: 2015 HSC Economics Marathon The reason why I disagreed with your answer was because it was incomplete. The term A curve I got from my teacher, who said that it looked like an A without the middle line.

Re: 2015 HSC Economics Marathon I also don't agree with this answer. Its true that if tot improved, then in the short run the currency will appreciate as export prices have increased, hence increased demand for AUD (you can also say BOGS will be in a surplus). However in the mid to long term...

re: HSC Chemistry Marathon Archive What he means by lower potential, he means that less energy is required to reduce water, hence it is favoured over reducing sodium.

re: HSC Chemistry Marathon Archive For the former; -Due to the scarcity of petrochemicals, there is greater price volatility, resulting in the risk of economic and diplomatic crisis's. -Petrochemicals are non-biodegradable, hence they fill up land-fills and cause extra issues of pollution to...

That sounds like Gabriel Moussa, its most likely him

Anyone else feeling really stressed because of daylight savings? I feel so guilty for losing that extra one hour... could of done another eco trial

You shouldn't be doing past short answer questions for the sake of knowing whether or not they will be asked in the HSC. You should be doing any and all short answer questions (that are contextually relevant) in order to refine your responses as well as knowing what details to include or exclude...

Well they use the budget outcome to coordinate future policy decisions as well, because as the OP said, it is a form of indicator. I guess it's like a two way street where policy decisions influence the budget outcome, and these policy decisions are influenced by the current budget outcome.

Whats everyone's predictions for the stimulus of the creative? Is it going to be a picture? A quote? A sentence or phrase you have to put in?