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It's "Luke"!

H2(g) + Cl2(g) → 2HCl(g) Molar ratio of H2 to Cl2 is 1:1, so hydrogen is in excess. Molar ratio of H2 to Cl2 to HCl is 1:1:2, so 2 litres of HCl will be produced. So in total, after the reaction has occured, you'd have 2 litres of HCl + 1 litre of excess H2 = 5 litres of gas.

Pretty much, yeah.

Don't worry so much about this one. Chances are, it won't be asked. Last year, just about everyone from my school memorised the Conquering information on this guy called ... I forget. But the point is, it's not important. The 4th edition of Conquering has a new guy, save yourself the trouble...

Were your methods valid? Were your results reliable? Validity - Correct use of equipment. Did you blow out the last drop of solution from the pipette? Did you leave the filter funnel in the burette while titrating? Did you clean the equipment appropriately? Do you understand the concept of the...

I used this text in my essay. I'll post up what I wrote, but it's pretty shit considering this was my worst subject. Anyhow, I'm posting the non-edited copy (which just increases its shittyness) because in my final copy, Alice in Wonderland had been condensed to half a paragraph. I hope it...

Drunken sex at 12? Ew.

I think most girls have been through a slut-phase. I used to wear jeans with huge flares. I also had a pair of caramel flares which were disgusting. Some tops I wore back in around year 9 were really skanky and I also used to have huge corky platforms (there were, and still are tasteful ones...

Did you even know what girls were in year 4?

They're not in the syllabus.

I relied completely on Conquering (third edition back then) and a very small amount of Contexts. Conquering was good because it has a colourful layout and lots of diagrams (even more of these in the fourth edition) so you don't get bored reading text.

Per formula unit is like saying per molecule, except ionic compounds such as potassium hydrogen phthalate don't exist as molecules - hence "formula unit".

I have edition 4. Please type up the question.

Please cut your hair.

That explains itself. Physical properties are those that can be easily reversed, such as boiling, melting and freezing; whereas chemical properties are those that cannot be (easily) reversed, such as boiling an egg, or hydrolysis of water. In more technical terms, physical properties are...

NaOH + H2O → Na+ + OH- + H2O NaOH is ionic, so it just ionises in water into the Na cation and the OH anion. But since an acid reacts with water to donate a proton, a base reacts with water to accept a proton. So you can think of it this way - OH- accepts a proton and becomes H2O, and the...

Sounds to me like H2SO4 was in excess. By the way, it reacts with NaOH to produce Na2SO4. I think there should be some hydrogen sulfate too, but this is what my teacher told me after I got it wrong in an exam.

Yeah I know. I read it in some magazine ages ago and didn't really believe it, but they had a photo attached and her waist really was tiny. Then again they could have been exaggerating.

Thanks, Sabdow.

I used to hang around a group of guys I didn't really know in year 6, and play spin the bottle with them. I didn't realise they were just trying to scam kisses until I was in year 7. My first official boyfriend was in year 9. He was two years older and I was too immature to be in a...