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I'm pretty sure the half equations you've quoted are correct. But I think all (minor, plausible) variations are acceptable anyway. I've memorised a different silver oxide diagram to the one in Chemistry Contexts 2 though. It's in the Jacaranda textbook, which according to that is comprised of a...

I've always been taught to round off using the fewest number of significant figures used in the question, never to decimal places. It's been specified in marking criteria too, and marks can (and have) been deducted for it before. It depends on the question/what markers are looking for. Also...

:| Crap, maybe our cabbage was off. Should I be worried? Can anyone else confirm that red/blue/green were the correct colours?

Acid (HCl) = Pink Neutral (H2O) = Purple Base (NaOH) = Yellow And originally, the indicator itself was purple.

LPG and naphtha. Darrow is also right about Q1...

You can't do senior science in year 11 if you're planning on doing any of the 3 sciences next year, however you're able to pick it up in year 12 if you drop any of your science subjects OR another non-science subject, for example, english extension 1. The maximum of 6 units of science in year 12...

Okay this discussion is starting to deviate from the original question asked, but I found something in my textbook that might clarify what I've said: Taken from 'Pathways to Chemistry', p456 (the 1996 version) Therefore, if the equation we have is: N2(g) + 3H2(g) <=> 2NH3(g) deltaH= –92...

I think Undermyskin is right, actually... For the reaction N2(g) + 3H2(g) <=> 2NH3(g) + 92kJ, don't you just read the equation as it is? 1 mole of N2(g) reacts with 3 moles of H2(g) to produce 2 moles of NH3(g) and 92 kJ of energy for that reaction. Therefore for every 2 moles of NH3(g)...

I'm not sure how you would go about addressing the "process first hand information" bit, but as for the theory that should be covered, I think the dot point you're referring to closely relates to this one: Identify the transformation of energy at each stage of information transfer in the...

HSC Course, Module 3. So I guess you don't really need to know what electrolysis is used for in year 11, just how it works.

Perhaps the hydrogen obtained from the electrolysis of water can be used in the production of ammonia? (i.e. Haber process.) Ammonia can then be used to produce a multitude of things, like detergent or fertilisers.