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Nah im happy :p hahaha Got 50+ in carrots 2013 paper :D

I am regretting choosing not to do the paper. Completed last years paper, didn't do bad. Would have been 8th. Carrot didn't answer my question:(

The large volumes of carbon dioxide produced during the Solvay process are of little environmental concern as it is regenerated and re-used. In step of one of the Solvay Process, Calcium carbonate is heated in the kiln, producing calcium oxide (used in a later process) and carbon dioxide used in...

Completely wrong. 0. Can't even give you pity marks. :p Question was worth 4 marks.

There's no ego, we are simply having fun. Exactly! Possible mate :D Mechanics is not hard... I don't know why people make it out as being the hardest...

hahaha :p you should beat everyone since you use MIF -------------------- Carrot will you be uploading the paper soon or after all the markings and stuff have been completed?

Someone do my question :p

Is anyone from ruse or grammar doing the paper? I know there's baulko

Come on be realistic... hahahah Realise will pump everyone.

A student decomposed solid copper(II) nitrate, producing NO2(g) according to the following equation. 2Cu(NO3)2 (s) 2CuO (s) + 4NO2 (g) + O2 (g) They bubbled the NO2 (g) into water in order to convert it into nitrous and nitric acid: 2NO2 (g) + H2O (l) HNO2 (aq) + HNO3 (aq) To answer this...

no

Realise will be 1st ahahah

Yeap :D New question any one else?

I'm not sure... I know there is a 2014 one, however the creator of the paper has not uploaded it yet. New question A radioisotope undergoes 2 alpha decays, followed by a beta decay, forming actinium-230 as a result. What was the original radioisotope?

With calculations you never know what the pH is going to be like because it may be a limiting reagent question. For instance if you have 1mL of Sodium hydroxide and 5000L of HCl, the resultant solution will have a pH < 7 because it's a limiting reagent question, with sodium hydroxide being the...

Also guys, this is 2012 BOS chemistry trials. This is actually a really nice paper, thanks to "someth1ng" and "addoil"

In HSC, the number of sig figs they want is the number of sig figs they give you. For instance, if a question says blah blah blah 4.567 bdhfgashdfahdfshfds, then your answer should be 4 sig figs. If it says ssgfsdfgdfg 0.345 mol then your answer should be 3 sig figs such as 0.123 Also, I'm...

haha did not realise at all.

Don't worry about sig fig, just write your answers. bold part - are you sure? Plus it's pH of final mixture you are finding

Have a go at the calculation question i posted.