Search results

hey, yeah ive got a similar problem im currently enrolled in advanced science. im pretty sure i want to go on an do grad med at usyd but am not 100% sure, so i chose to take advanced physics in case i want to transfer to eng by the end of the year. however if i indeed do decide im definatly...

B Science (Advanced)

B Sci (Advanced) USYD my UAI: 96.2 cutoff: 96.4

the unit of B (magnetic field strength) is the tesla (T) or weber/m^2 (Wb.m^-2) [excel p55] its also obvious in that φ = BA :. you could consider Wb = T.m^2 or = (Wb.m^-2)/m^2

principal of relativity galilean relativity : the laws of mechanics are the same for a body at rest and a body moving with constant velocity newtonian relativity : it is impossible to do any mechanical experiment, wholly within an inertial frame of reference that can tell you wether the...

haha.. yes, if your getting confused about the consistency of the speed of light NOW you better get some study done

hahaha.. you're so right,- god knows what would happen if students could extend their chemistry knowledge beyond the syllabus! what would be next... turning the sciences into humanities?

yes AAS is used to detect metallic ions but it can also be used to detect other non-metals dont get me wrong i put A too BUT the way the question was worded was dodgey as calcium is better detected by other methods and iodine is best detected by AAS however AAS is better at detecting...

this thread and the other one (which is pretty much the same) are going in circles...i pretty much said the exact same thing in the other thread a couple of hours ago. in summary if you're going to go against people like dumsum and myself you need to understand that electrons cannot float...

yeah the wording of the question was akward. It could have been asking which is AAS best at measuring or which is best measured by AAS... i put A but looking back i guess it depends on how they wanted the question interpreted nothing to do now except know i gave it a good shot and leave it...

unofficial Bored answers to the multiple choice ive compiled this list from reading the post and my own study etc... 1) B: as any atom with an atomic number greater than 83 is radioactive (the better answer) 2) C: petrochemical industry relates to the pruduction of hydrocarbons and their...

dude. look up the definition of an electrode and realise there are non in this particular reaction

think about it this way, if you put a magnesium strip in a beaker of iron sulfate what would happen?- the magnesium would displace the iron ions in solution it does this by giving up an electron (Mg -> Mg2+ + 2e-) this electron cant just swim through the water it it taken up by the iron...

there is NO electron transfer between the magnesium and iron nail...therefor no cathodic protection

yeah i just put a side note on how i interpreted the question

yeah, for sure there is. when the magnesium oxidises the electrons are used to reduce the iron ions (in solution) instead of the iron metal (where they prevent rust).

there couldnt have been cathodic protection as there was no direct contact... and i reckon the iron nail and iron deposits on the magnesium ribbon would have rusted

im pretty sure they should be similar to the ones at the start of the graph ie concave up for ammonia concave down for hydrogen and nitrogen

NH4 went up H2 and N2 went down and then they all went straight...indicating an equilibrium was again established

i dont think so.. galvanic cell implies that the electron transfer process occurs through an external conductor i believe its simply a redox reaction at the magnesium where Mg(s) + Fe2+(aq) -> Mg2+(aq) + Fe(s) and the iron will rust as there is still water and oxygen present- i dont...