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You should get a different quadratic to the one you got.

Um, so you forgot to square [HF]. Since you have 2 HF for every H2 or F2, you should have squared it in your Keq expression. I didn't read all your working out, but you should start by fixing that fatal error lol

You apply halfway through year 12. Your school will keep you updated on application dates, but you can also find them here (you'll get a new one): https://www.uac.edu.au/assets/documents/ug-fact-sheets/ug-fact-sheet-key-dates.pdf If you want to apply to other states, their application centres...

There is no evolution. I meant Darwin's Theory of Evolution by natural selection. So really it's the natural selection component that will be useful.

It can not be directly tested in year 12, but here's some stuff off the top of my head I encountered again in year 12: behavioural, structural, physiological adaptations of endotherms and ectotherms (anything you memorised in y11 you should keep) all the microbiology content you learned in y11...

You should be able to find what you're looking for from here, and although this is from 2019 I doubt very much has changed. https://www.universitiesaustralia.edu.au/wp-content/uploads/2019/06/Data-snapshot-2019-FINAL.pdf

oh crap, yes! thx i will edit my reply

Right. So if you remember, the formula for Variance is Var(X)=E(X^{2})-E(X)^{2}, and E(X)^{2} is just the mean squared. In part b you found that the mean is \frac{c}{2}, so the square of that is \frac{c^{2}}{4}. Now to find E(X^{2}), integrate from 0 to c of the original PDF function but...

I think you have to justify it by thinking about how y=1/c is a horizontal line. If c=2 and you were finding the area from 0 to 2 under y=1/2, then your area would be 2/2=1 according to your E(x). Now this makes sense, as the probability from your lowest to highest bounds for a PDF should always...

Yeah, my favourite amphiprotic substance is actually water. You can take water and put it into an acidic or basic environment. If you react to water with H3O+ which is more acidic, then water will act as a base and accept a proton from hydronium. However, this also links to the auto-ionisation...

kidshelpline call centres finna be wilding on 20th

On the top line of your Ka2 expression you made a mistake and wrote 0.75x instead of 0.075x, so maybe just restart on a blank piece of paper. gl

Also made the assumption that your working out is correct and solved for x, getting 0.0245... but when you plug that value of x back into the Ka2 expression, you don't get the Ka2 value of 0.012 (this is a sanity check you can do). Looks like something has fallen apart lol.

What is your question though? If you are trying to solve for x, do that using the quadratic equation. If you are wondering what total [H+] is, it should be 0.0750M + the value of x. If you think about it logically (and this is a common mistake), your total wouldn't be 0.0750M from the first...

Well, don't forget that 100s of people buy state rank essays, which is why it's a good idea to come up with original analysis or unique quotes if you can.

Pre-Uni Baulkham Hills

Firstly, familiarise yourself with the context and the composer's ideologies or purpose. Next, consult the rubric and understand what it is asking of you, and understand the themes of the text. This will make finding quotes easier as you read through the text because you'll know what is and...

Pre-Uni and CS education are both good from what I have heard. I went to Pre-Uni. It was great but very expensive. If you think your daughter needs one-on-one help for English, you can find a private tutor with a simple google search. Tuition centres are good if you have strong fundamentals, as...

in the realm of classical music you'll find thousands of easy pieces for children and conveniently for you there is no lyrics.

If it must end and begin with a vowel the two O's must be fixed on each side of the four-letter word: O __ __ O Of the remaining letters S, H, W, W, D, N, there's case 1 where you get OWWO and since it is a palindrome it can only be done one way. Then there's case 2, picking one W and any...