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PO4 3- + SO4 2- = ? :D Any of these 2+ cations will form insoluble white precipitates with sulfate ions; Calcium Strontium Barium Lead Mercury Silver

softeners would, I imagine, bond strongly forming soluble stable complexes with the cations causing the hardness. Algal bloom suck. All algal blooms starve the water of oxygen. They also produce toxins, though that depends on which group of algae we are talking about. Google fetches heaps on...

toluene : Methyl benzene. Clear solvent. Methyl group makes toluene much more reactive than benzene. Undergoes nitration to make trinitrotoluene! Don't try that at home kids!!!

Consider; Fe3+ + SCN- <====> FeSCN2+ K=1047 at equilibrium [FeSCN2+] / [Fe3+][SCN-] = K = 1047 n(FeSCN2+) / n(Fe3+)n(SCN-) * V = 1047 Compare initial 0.01M Fe3+, 0.01 SCN- for V = 0.1 & 0.5L let the equilibrium amount of FeSCN2+ = y n(FeSCN2+) / n(Fe3+)n(SCN-) * V = 1047...

Since carbonic acid can't be isolated from water you can hardly pollute water with it. I think you mean carbon dioxide :)

:D I don't think carbonic acid is the pollutant that is responsible. You might have a hard time isolating it!

Solubility would be given as molal quantities. That is to say mass of solute for mass of solvent. SI Chem Data tabulates grams of solute per 100 grams of solvent (though figures only given for water). That would be because volumes of solvents (be it solid, liquid or gas) vary under many conditions.

Yes, but sulfate ions and hydrogen sulfate ions exist in equilibria. So adding sulfate ions would decrease the acidity of the solution. (slightly)

I think it means it is at equilibrium. Completion as in no more reaction, though even that is silly since it is always reacting!

Fe (3+)(aq) +SCN (-)(aq) is an equilibrium reaction since it is a reaction yet isn't 100% yield (given "In fact, the intensity of the colour increased" ~ even though 1:1 ratio of reactants). Since it is an equilibrium reaction it is reversible. There is one flaw in the question since adding...

Hehe it is actually 3 000 000 000 L or 3000 ML or 3GL per day. I assume they got 'm' confused with 'M'. http://www.australianwaterservices.com.au/WaterProspect.htm

Luigi Galvani : (1737-1798) Proposed the theory of animal electricity after his famous frog legs experiment. Similar experiments were performed on dead fellons gave rise to the story of Dr. Frankenstein. Galvanization is the process of coating metals by the work of an electric current as well as...

2.4 identify the reaction of hydrogen with nitrogen as exothermic ...hmmmm.... 2.5 explain why the rate of reaction is increased by higher temperatures For a reaction to occur there needs to be a collision of molecules having enough energy to react. Increasing the temperature increases...

1.2 identify the need for collaboration between chemists as they collect and analyse data There is no I in team, duh! Next! :) 1.3 describe an example of a chemical reaction such as combustion, where reactants form different products under different conditions and thus would need...

Nitrate : Polyatomic anion of nitrogen and oxygen (NO3-1). Nitrates are oxidising agents and they exist as several interesting compounds. Ammonium nitrate is used time and time again to kill people cheaply and effectively (if confused, read more news!) as well as a fertiliser. Saltpeter (KNO3)...

Its a bit rich to critisise Lleyton yet Roddick is somehow much better. Roddick is so very boring. At least it could be said that Hewitt has an all court game, but what is Roddick? A serve and a put-away. Roddick's tactics work against the lower ranked players, but Hewitt and Federer know his...

^^ Sorry, me again. A proper 'line of best fit' includes the seemingly in error data. What you are refering to is fudging the numbers (and acedemic misconduct I might add)!

Nice try; V = 0.1L (1kg = 1L) m = 70g M = 35.45 + 1.008 = 36.53g/mol [HCl] = m / ( M * V) = 70 / 36.53*0.1 = 19.2 Molar Which sounds reasonable since I've only seen as high as 18M. Budz' question talks of 25M HCl reacting with 0.2M Ba(OH)2 ~ which is very silly indeed!

^^ Who says a free radical has to be an atom? Consider NO2!

Rheometry : Study of the viscosity of liquids. EDIT: Sorry Dreamerish! That was an attempt to hide my inability to type quickly!