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Ah, thanks for explaining that, makes much more sense now. Though when we use bunsen burners for flame tests, a flame colour is always produced. Is that because they only select elements that can be excited by the flame, and that the bunsen flame (in this case the hottest blue one) always stays...

I see... because, uh, water's more polar than ethanol, so more of water makes the thing more polar? >.<

K, thanx.

Ooh, thanx. aha xD Now I just have to do the question...

Well, I looked up the answer to that redox equation, and it says it's a strong oxidant. I have no idea why... maybe you can figure it out... 'cause I don't know =S

Ah, ok. I can be a little slow at times xD As for the eqillibrium, I could shower you with a million more questions, but I won't. Only this If I wrote: MgCO3(s) + 2HCl(l) ---> MgCl2(aq) + CO2(g) + H2O(l) instead of: MgCO3(s) + 2HCl(l) ---> MgCl2(aq) + H2CO3 (aq) or vice versa... Would...

Well, I know the concept of equilibrium, but only roughly. Can you write up an equation or something for when ? And I meant, are 'all group I carbonates soluble or only some'? Heh, prone to typos.

Aha, thanx. First up, yea, I was in a sense saying that the results will be less accurate, but I read that the calibration curves correct for that error... and so I wanted to know how that was done (to word it simpler) :) I confused myself trying to articulate that too, dun worry. With my...

Don't you mean, usually you should not mix corrosive substances with inorganic substances? Otherwise the logic doesnt follow on. Why's that? ^_^

Ah, ok. Thanx. So in In Column adsorption chromatography, is the mobile phase always polar? And if the mobile phase were non polar, the non polar things travel faster, ya? Yea, I know, I happen to be in an inquiring mood. heh xD

Ah ok. Hmmm... can a species act as both an oxidant and reductant at the same time? Confuzzled :S As for the second one, think I figured it out, you add water, and hydrogen ions and balance charges with electrons...

K, thanks :) The HCl thing was a typo, must've copied the typo onto the 2nd equation too. Your second point... are all group I carbonates soluble then, or only some? Your third point... So if I'd written the 2nd equation, would it also be right? Can you explain that the equilibrium process...

Ok, the middle step is what essentially is confusing. Would it be the same number of moles of CuSO4.5H2O as you have CuSO4? ... =S

So... to clarify that... 'ground state metal atoms' are where all the electrons are in their ground state? Hold on, is 'ground state' the state where an electron occupies its normal/ lowest possible energy level...?

I know that in both qualitative and quantitave analysis are involved in AAS, but where's the qualitative analysis part in it? I'm not quite sure I can pick it out. With calibration curves in AAS, how do these curves correct for atoms excited by the flame heat (not the light source)? Eg. If...

I was wondering, what does 'ground state metal atoms' mean? Does it refer to the fact that all the valance elections are in their ground state or something?

With Thin Layer chromatography, why is it that it can be used with corrosive s amples and materials as the adsorbent layer because the adsorbent layer is made up of inorganic substances? Also... with Atomic Absorption Spectroscopy, why can it be used to identify many of the metals that can't...

In Column adsorption chromatography, polar compounds eg. alcohols and amines, are absorbed more strongly and eluted less readily than the less polar compounds such as halogen compounds, aldehydes, ketones, ethers and hydrocarbons. Can someone tell me why?

What mass of solute is needed to prepare 400 ml of 0.850M CuSO4 from CuSO4·5h2O? I don't really understand the wording in this question. Would someone explain the working for me?

Magnesium Carbonate is reacted with concentrated hydrochloric acid and the reaction goes like this: MgCO3(s) + 2h20(l) ---> MgCl2(aq) + H2CO3 (aq) My first query is, why is H2CO3 not a solid, since compounds with CO3(²-) (in brackets is the charge on the ion) are generally insoluble...? My...