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Guys and girls, was Zn electrode the anode?????

c1 = 10 to the power of -3 c2 = 10 to the power of -5 (using the pH formulas) so c1/c2 = v1/v2 and the ratio was 1:100 so 10 : 1000 since volume added was 990 and initial was 10 final = 1000; 1000/10 = 100. Fits the ratio :. answer is 10 | 990 :)

It said which period the element was in, and it was in the same period as the element "S-16"

yeah sweet, looks like i did pretty well overall, was an easy test though; compared to trials.

15 is C, it was 10 and 990 you had to read carefully second column was "Volume ADDED" so you add to the original sample 990 + 10 = 1000. and use c1v1=c2v2

But a weak acid does not completely ionise, so it will keep ionising as the titration begins so basically when the base things it has neutralised all of the acid, it will ionise another H+ for the base to ionise :. it would require more volume than a strong acid which has a set amount of H+ in...

for solubility i think it was 10.4 i think you draw curve of best fit and estimate from there

as depth increases, temp decreases so solubility increases (dissolving of a gas is exothermic) as depth increases, pressure increases so solubility decreases (pushed out Le Chatelier) and expand on those 2 points and trends and stuff lol did u talk about all 4 scientists of just focused on one?

which one is B equal or greater?

Sn + H2O -> SnO + H2 ? :/ not sure was 2 marks

For 17 answer is greater than the volume as strong acids completely ionise and weak do not so it will continue to ionise as it is being titrated, requiring more volume to neutralise than the strong acid (i am 100% sure)