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Hey everyone, I was wondering how you would approach improvements in accuracy for a qualitative test? (ie identification of ions) Thanks! :)

Hey everyone I have a couple of questions which in help in terms of the maths. 1) 50mL of 1.1 mol/L HCl is mixed with 100mL of 0.4 mol/L NaOH. What is the pH of the resultant solution? {2 marks} 2) A 200mL solution of 0.04 mol/L HCl acid is diluted to produce a solution with a total volume...

Hey everyone, These questions are driving me insane, (especially thanks to my teacher:mad3: ) anyways, how do I go about doing these types of questions: "In each of the following equations, state which (if any) element has been oxidised and which has been reduced:" 4Fe +3O2 -> 2Fe2O3...

This question is driving me nuts!! Can anyone please explain to me the difference between these two questions: 1) Explain with examples some of Maimonides’ main contributions to the development and expression of Judaism. 2) “From Moshe (Moses of the Torah) to Moshe (Moses Maimonides) there...

Hey everyone, I understand the simple question like: Fe|Fe^2+||Cu^2+|Cu E(cell)= 0.79 volts but what about questions like: Ag|Ag^2+||Br, Br2|Pt (its polyatomic bromine, Br-Br :spin:) Thanks in advance!!!!

Hey everyone, I have a question: Explain why the anion used in the solutions in the salt bridge does not matter (2 marks) I'm really not sure about this one.. Thanks in advanced!!!!

Hey everyone, I'm starting the HSC course next Tuesday and I was wondering whether it would be worth it getting a UMAT tutor to help be prepare for the actual UMAT test? Thanks!

Hey everyone, I'm starting the HSC course next Tuesday and I was wondering whether it would be worth it getting a UMAT tutor to help be prepare for the actual UMAT test? Thanks!

Hi everyone! Please help me with this question!!! 19) a) Suggest a reason for why the release of carbon dioxide from combustion of hydrocarbons cannot be prevented. 2 marks and b) Suggest 3 methods to reduce various pollutants released from hydrocarbons. 3 marks Thanks in...

Hey everyone, The question asks: If 42.7g of CO reacts completely at 25 degrees celsius and a pressure of 1atm, calculate the volume of N2 gas released. I'm not sure whether its a typo, but CO is a gas, shouldn't it be 42.7L instead? This my solution: 1) found how many moles...

Hi everyone, I plan on doing Ext 2 next year and this might sound like a silly question, but can someone please give me an overview of Eng Ext 2, my school hasn't mentioned or given us any information about it and Board of Studies is really bad at explaining it. What are the options for Major...

Hi everyone, I've been looking for ways into Medicine and I'm stuck now. What I don't understand is what is the difference between doing BMed Sci (92.10 at USyd) and then going to the School of Medicine instead of doing the UMAT, interview and getting a ATAR of 99.95 for the combined...

Hi everyone! I was wondering if HSC Biology is one of those subjects which really relies on your prelim knowledge, because going throughout the syllabus, the HSC content is completely different. Thanks anyways!

Hi everyone, I know that I shouldn't base by subject choices by scaling factors and etc. I'm in year 11 I just want to know whether Eng Ext 2 scales as ridiculously as Maths Ext 2 does? I read in another post that if one was to get a high E3 they would be guaranteed and ATAR of 98+. It sounds...