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yea. so for that question if u reverse both anode and cathode it would be 0.44 and -0.34, so it will be positive...

yea when i called the help line they told me to reverse it. i said "ok". but than i look back on it now it make no sense to reverse the thingy ...

you can't. cause Fe and Zn when corroded is soluable in solution. Zn2+ and Fe2+

i learnt that on braniac. but more O2 give u more energy and more brain power. also in simpsons they teach you that O2 is addictive.

serge, u do shipwreck right? for question 29 a) ii) for 2002 hsc is the cathode equation Cu2+ + 2e- --> Cu E=-0.34 anode is Fe --> Fe2+ + 2e- E=-0.44 so the required initiation voltage is 0.78V. is the equations and the voltes for the half...

oh thats much easier to remember. do u know the structure for fuel cell? does mentioning this structure enough with out writing out full cathode and anode equations to compare?

NO + O2 --> NO2 + O O2 + O --> O3 but at the same time it also destroys ozone NO + O3 --> NO2 + O2 but the formation of ozone is faster than destroying the ozone, thus ozone is present in photochemical smog due to NO. Both are polluntants at the troposphere level. O3 is highly...

lol, feel so stupid now. anywayz. i finally get wat you were trying to tell me dreamerish. sorry the number of moles on the conical flask dun change. so still need same amount of acid to titrate111zzz

gonna go call hsc help line now

the ph for normal rain has ph of 6right? slightly acidic

but the conical flask is gonna carry base. so if rinsed with water. the titration result for acid would be too high.

oh so i was confused. for chem, every element at atomics number greater than 82 is considered to be unstable. and 92 is just transuranic elements but i remember another multiple choice question before saying that the conical flask is washed with water and used in titration with acid in...

yea just gotta give examples. for exemple applied current or impressed current are used in underground corrosion protection of pipes such is because this protection is continous and do not need to be changed, unlike sacrificial anode. the initial implementation is very expensive in comparison...

for the hsc paper 2002, for the MC question 8, why is the conical flask i the titration need to be rinsed with water? well the successone book say the answer is A. but base is going to be transfered from the pipette to the conical flask, so both the pipette and the conical flask should be...

but wouldn't there be a constant acceleration? but maybe u could say in both test the variables are kept constant without mentioning velocity.

well of course u gotta have two radial magnet produce a more uniform B field right?

i think by uniform it meant radial magnets so the field lines cut the conductor the same no matter where it is or what degree it is...

well the inner space travel ones are not launched from equator. but i think all that is out of the scope of the syllabus

so could we expect to see your suggestiong and tips for the physics exam tomorrow helper?

haha, yea. do physics paper get marked twice? and if ur spelling is bad, like no for key words do they take marks off? or u leave out words again not key ones and some bad grammar is that really bad i tend to get that when i write hardcore