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You mentioned integration in your answers for HNMR. Is there a way to calculate the integration in the exam if they're not provided? My teacher said it's very unlikely they'd ask us about integration, hence why we never were taught of it. But i've seen a few past papers include the term and...

Do you guys base your estimates off the person's ranks or raw marks?

4 Units. 2 units from 3U and the other 2 from 4U.

Why does the equilibrium constant get affected only by changes in temperature? Why not with changes in pressure or concentration? Let's consider a general reaction: A + B <--> C + D where Δ < 0 The eq. constant expression would be [C][D]/[A]. If we were to increase the temperature, equilibrium...

Oh I see, that clears up the confusion. Thanks so much!

Using the equation Q = mcΔt, if Q is positive; the reaction is said to be endothermic. If Q is negative, the reaction is said to be exothermic. What confuses me is that when we perform the experiment in school, we pour an Ionic compound into a beaker filled with water and measure the final and...

As I try to access resources, I receive an Error 404 code.

Thank you all for clarifying, I got it now.

Considering the new syllabus for Science and English have become considerably harder than the old syllabus, does this mean that Physics, Chemistry, Bio and English will generally get scaled higher compared to before? Or does it depend more on how everyone does in the 2019 HSC?

Ahh right, makes sense. Thanks.

Oh, that makes sense; thanks. I thought that adding water would make a solution diluted, hence they would be the same. Could you explain the difference between one adding water and the other being diluted?

Yeah sorry, I wrote down question 1 incorrectly. Your method works to get the answer. Thanks. 2) Could you elaborate on how my V2 is wrong? I thought that C1V1 is the equation that applies to the substance before it's diluted and C2V2 is after it's diluted? So how is V2 not 200mL

Need help with these. If someone could explain (worked solution) the answers to these, it’d be greatly appreciated. Thanks. 1)A beaker contains 100mL of Silver Sulfate solution at a concentration of 1.0 x 10^-6 mol/L. What is the mass of Silver ions in the beaker? Answer: 2.16 x 10^-4 g 2)...

So if the domestic supplier increases the price of the good, would they also increase supply since they’re earning more money and can afford to hire other workers? Also the fact that there is a decrease in supply of imported items, so domestic steel companies replace that deficit in imported...

My teacher was telling us about how due to the tariff the US put on steel and aluminium imports, the price of both of them would increase (which makes sense). But he then said that domestic suppliers would also increase supply AND increase the price, meaning the overall price of steel and...

English, Science and History subjects are changing their syllabuses.

Do you recommend I start going over the 2U and 3U textbook when the holidays start or should I spend the first half of the holidays on 'mastering' the Year 10 content (basically have a solid foundation) and then start with the 2/3U content during the second half? Also apparently 3U classes don't...

Thank you guys for your answers, just got a few more questions to add on to the existing ones: 1) When you get bombarded with homework (let's say 3-4 subjects' worth everyday), would you complete that and then go to sleep/relax? Or would you still 'study' and if so, what would that studying be...

(Note these questions aren’t ONLY being asked to 99.95 ATAR recipients, if you also have some advice to share - feel free to do so, thanks). Had some questions for the top students, would like some advice: 1) Were you guys always top in your cohort (this doesn’t really apply to Top 25 SS...

So since Ice is brittle, what's the reasoning behind that in the molecular level? I get the intermolecular forces are weak, but the Covalent bonds are strong. To break the structure, do the intermolecular forces only need to be broken? Is there any reasoning like the Ionic compounds (where same...