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I was wondering if the correct way to describe the dehydration process was with the E1 or E2 mechanism; different sources state different things. E1 would be the removal of the hydroxyl group as it is protonated by the acid to form a carbocation and water, then the carbocation loses a proton...

Hey guys, I'm doing a presentation on the similarites/differences on the Zaglossus hacketti (megafauna version of the echidna) and the modern echidna, including info about how fossil evidence and other research has developed understanding on the evolution of the extant species. There seems...

Ohhh ok thanks for the clarification. It seems kinda obvious now :P but I was genuinely conflicted by sources saying things like "each subsequent molecule or ion is dissolving into a mixture of dissolved solute in solvent. In this case, the final solute molecule or ion is dissolving into a...

E.g. Calculate the molar heat of solution when 1.837g of NaOH dissolves in 150mL of water, if ΔT=4.32°C. ΔHsol=-mCΔT/n(solute)=-(151.837x4.18x4.32)/0.0459... or -(150x4.18x4.32)/0.0459... I've been told to use both by different teachers, which is kinda distressing. Which one do we use for HSC...

I did the Glossopteris myself, here are some links from my reference list: http://www.ucmp.berkeley.edu/seedplants/pteridosperms/glossopterids.html https://www.academia.edu/1275722/Glossopteris_insights_into_the_architecture_and_relationships_of_an_iconic_Permian_Gondwanan_plant I think I wrote...

Hi guys, I'm having trouble making a decision between keeping German Continuers or picking up Senior Science for the HSC. My subjects will be Maths ext. 1, Maths ext. 2, Eng. adv, Biology, Chemistry, German/SS (12 units). I do fairly well in science, being 2nd in Chem and top 10 in Bio, and...

School rank: Around 10-20, usually in the middle English Adv- 8/169 Maths Ext. 1- 18/130 Maths Ext. 2- 21/60 Biology- 7/44 Chemistry- 2/95