Recent content by ChrisChrisau

PM sent :)

All very likely answers... particularly the last haha Thanks for the help :)

Hi all, For citric acid, I was wondering the reason behind it being named "2-hydroxypropane-1,2,3-tricarboxylic acid" as opposed to "1,2,3-tricarboxylic-2-hydroxypropane" The reason I ask is that I was under the impression that when naming hydrocarbons, the segments are put in...

Not sure how much help this is, but the syllabus does use some short hand. For example, in page 24, they write "Angle sum of a A" (of a triangle... not "A")

Thanks for the replies everyone :) Will make sure I do that for tomorrow!

Hey all, I have this mathematics quadratic identity question and the two ways of going about it give different answers. Which is correct? Question: 7x ^ 2 - 20x + 15 = A (x - 2)^2 + Bx(x-2) + C Approach 1: 7x ^ 2 - 20x + 15 = Ax^2 - 4Ax + 4A + Bx^2 - 2BX + 4A + C 7x ^ 2 - 20x + 15 =...

Hey all, If a question asks to find a maximum on a complex curve and there is only one turning point, are we still expected to find the double differential? For example, in the 2005 Maths paper, question 10 (b) (iv)...

Data warehousing involves a companies digital storage of data, whereas data mining is searching the data for trends that aren't always particularly obious. A couple questions here as well, Does anybody know what is meant by OLAP and OLTP - I don't recall learning them in class :karate...

I remember hearing that this was scrapped with the new syllabus, but I'm really not sure :monkey: do you know whereabouts it is?

Ah! I was on the exact same thought train as you! That helps me understand :) Thanks for all the replies :)! (Sorry for the late reply - I forgot to subscribe to this thread :cry:)

Hey all :) I've had some conflicting responses to this question and I'm not quite sure which is correct. For Halons, do all the hydrogen atoms need to be replaced with Halogens, or just at least one? Thanks! Chris :)

+ 1 :p

Thanks :)

Supposedly silly question 2 weeks away from the HSC, but do "identify" dot points just require you to know the words on the syllabus page? For example, "Identify disease adaptations, including: * Inflammation response * Phagocytosis * Lymph system * Cell death to seal off pathogen"...

Hi all! When converting a decimal to a time in physical applications of calculus, do we round up or down? For example, say your answer is 2.885 years (where year 0 = 2008), but the question wants the answer as a year and months. So we convert the 0.885years to a month and we get 10.6...