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By the way: Are ALL ionisation equations with an equilibrium arrow, or is that for weak acids/bases only?

There wasn't an ethanol question last year, meaning this year its guaranteed to be in there. - Purifying/Sanitising Water - Possibly AAS - Haber Process (DEFINITELY - wasn't in short answers part last year) - Modelling Ionisation of Acids (my personal prediction)

With the radiation bit, just remember that radioactive decay occurs so that an unstable radionuclide rearranges its nuclear constituent particles, to become the nuclei of a more stable nuclide.

:)

I'll go searching for my answer to a similar question quite a few pages back.. hopefully will find in the next few mins, if not.. I'll have to go from scratch. lol Why does everyone rely on me to be the answer 2 every question??!? lol

Identify Risks Cyclohexene is highly flammable, reactive and volatile. Bromine Water is toxic and can cause respiratory irritation.Assess Risks Any ignition sources in the lab could cause a fire to break out, or even a hot surface - causing potential injury to students. Fumes of Bromine could...

I've actually lost weight, according to lots of people who haven't seen me in a while. I do admit, because I was so preoccupied in studying, at times I skipped meals, and just forgot about eating.

Correct, I remember marking centre comments clearly stated (in response to a question on acidic oxides), that students had not presented up-to-date information on acidic oxides, and that some noble gases produced acidic oxides, just like Xenon does, as you rightly said. lol, Jason I couldn't...

well we actually did use a water bath (it prevents superheating/overheating for safety issues).. it worked out well, and we did produce the methyl salicylate. I just stated that Sulfuric Acid was a catalyst used to promote a reasonable rate of reaction (by lowering activation energy...

4mL of Methanol was mixed with 5g Salicylic Acid, in a round-bottom flask. Several boiling chips were added to the mixture, to promote even boiling. An upright reflux condenser was set up, and attached to the round bottom flask. The apparatus was then secured to a retort stand, and the...

LOL Outline the effect of the above compound in the stratosphere and troposhere. Also, describe the bonding within the molecule.

Significant figures for pH figures are counted AFTER the decimal point, since its a log function.

Was the pH calculation correct?? To jason's question: Warragamba Catchment Area involves the Warragamba Dam and surrounding creeks and rivers that feed into the main water supply. ? meh

n(H+) = 2 * (0.1*0.014) = 2.8 x 10-3 mol n(OH-) = 0.12*0.016 = 1.92 x 10-3 mol excess H+ = 2.8 x 10-3 - 1.92 x 10-3 = 8.8 x 10-4 mol [H+] = 8.8 x 10-4 mol / 0.030 L = 0.0293 mol.L-1 pH = -log(0.0293) = 1.53

pH = 1.53 (2.s.f)

Same, as you can see im freaking procrastinating hard, right here... *sings* "i haaate this part right heere..." :(

lmao thnx

A strong acid is one that undergoes complete ionisation - ie. virtually all acid molecules present in the solution donate a proton to a base. Concentrated acids simply refers to the molarity, or amount of acid molecules present in solution per unit volume, and can be used to describe molarity of...

The one I did in detail was Darmstadium-269. Darmstadtium-269 was produced in a heavy ion accelerator in Darmstadt, germany in 1994. Nickel-62 ions were bombarded into Lead-208 ions, in a heavy ion accelerator, forming the nuclei of Darmstadium-269 and a neutron. 6228Ni + 20882Pb --->...

Would anyone be so kind as to share their model with us :)