Search results

anyway...do you know the properties of Tc-99m that makes it useful? they are: -short half life of 6 hours -emits harmful gamma rays that do not damage tissue but are still detectable by special camers -can be changed to anumber of oxidation states allowing it to be targeted at various...

btw guys...is what i said correct? cause from memory, i did a trial paper, i think it was james ruse, and there was a trick quetsion - miptiple choice. it asked which of the following displacement reactions would spontaenously occur. now normally, you work throuh a, b, c, and then d. but with...

and besides, seeing as how it's "my understanding" i'm entitled to having it wrong :p

general although they could most likely tie this into a radioisotope you have studied and it's application in whatever in general, it is formed in nuclear reactors through neutron bombardment, which can then alpha or beta decay to form different isotopes, some of which are radioactive. but...

nah man don't worry...no point flaming each other see...until we finish highschool...the only thing that really matters is the uai..cause from there...your life can really start EDIT: sorry about the flame, but before mods get me i'll say this whether or not i wanna worry about my uai atm...

for one i wouldn't reccomend reposting like that cause it's spamming and you can get kicked for it and i really don't wanna give any advice atm, cause it could give you an undue sense of accompishment or an undue lack of self esteem...perhaps it's best to leave it to the ppl who bought the uai...

really...frederica..how so?

nope small shortcut the standard reduction potential table is essentially the reactivity series! but as far as knowing whether it will go...i think you just treat it as a cell, and if the Eo of the cell is greater than about 0.1, the reactino will spontaneously occur

do you mean that you want to appeal cause of some unfair condition when you sat the hsc exam? here's my understanding - if your assessment marks are really good, compared to the hsc, there are 2 possibilities. one; your school was crap, and the assessments were so much easier compared to the...

the figure 65000 comes to mind for number of ppl in nsw...that's about the only figure i know

i dunno what calirometry is, but the preferred test for hardness is titratino of the water sample with EDTA. all i remember is that the stoichometric ratio fo Ca2+ : EDTA is 1:1 :p

i thought Cr2+ was blue, and Cr3+ was green...

hahaha same!! oh well in like 48 hours we'll be free!!!

wtf is wrong with you?

hahaha so what happens to that unit? cause i plan no study for it...does the barely pass mark for it (that's my aim) get printed anywhere? or are only out best 10 uinits displayed and that unit gets lost

i think that's wrong high oxidation state doesn't mean high charge the MnO4- has a charge of only -1, but the element Mn has an oxidation state of 7+ not a charge of 7

why are transition metals in high oxidation states strong oxidants?

for that syullabus point i'm talking about the ancient ehyptians using PbS as a mascara and how lead is bioaccumaltive and causes neural network problems and death

hahaha i never knew that! but i don't see me remembering anytime soon :)

hahaha i guess i will miss those times meh