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when doing calculations what decimal place? i read in the answers you should do your calculations to the same number of decimal points as the question has given. They do this, but they seem to round off/keep the moles as an entirety? what are your views????????

what are they thanks heaps maybe also give an example for one in Hamlet and Ros so i understand thanks

in galvanic cell's. (ill use question 5 HSC 2005 as my example) so the Al oxidises: 2Al-->2Al3+ + 6e- then the copper reduces 3Cu2+ + 6e- --> 3Cu my problem: so when this al oxidises, the al3+ ions will move through the salt bridge towards the beaker containing the cu (i.e. the cathode) to...

Excel is where i learnt it. also using resources from the resource section are good

From HSC online: Incremental compilation is a hybrid between interpretation and compilation where some frequently used sections of the program are translated into machine code and stored. The program is then translated using an interpreter until the compiled sections are reached. These sections...

- both produced using nuclear fussion (involving neutron bombardmant) and in particle accellerators whats the difference between a transuranic element (>92) and a radioactive isotope. is it just the the later can include elements <=92 aswell as the transuranic elements (which i have assumed to...

hmm well it seems i dont understand what a di-pole di-pole attraction is and its different towards a hydrogen bond. is it that di-pole di-pole are within a molecule and cause hydrogen-bonding between molecules lol confused Thanks heaps for all your help.

what is it? thanks

glancing over prelim notes i came accross this i had written: "- Di-pole Di-pole: (think di-(two) different ends). Occurs due to an uneven distribution of charge in a molecule due to electronegativity. E.g. Water. The O is more electronegative (ability to attact e-) than H+ and so when forming...

ahk thanks heaps for that clarification. for get acc DV/Dt : -12cos2t (/-12) cos2t = 0 now lost... in the ansers they then do 2t = pi/2, 3pi/4 t = pi/4, 3pi/4 -->i see here they have multiplied by 1/2 to get t on its own. where do the original numbers pi/2, 3pi/4 come from? thanks heaps for...

2004 HSC question 6 b ii it says "suppose that it is given that AY bisects angle BAC. in the answers they have assumed this bisection is into two equal parts is bisection in maths assumed to be into two equal parts? thanks and question 5 b iv no idea lol

please some1 ive looked everywhere

Sacrificial anode: a more active metal is connected to the metallic hull to form an electrochemical cell for which it is the anode and oxidises. Its loss of electrons are gained by the cathodic steel hull to reduce the hull. As corrosion of a hull is when the metal hull is the anode, no...

JW with the results of a query like if fields were: 1) Initial (integer) and 2) Final (integer) and you wanted to do the calculation initial - final do u have to create a new field to store the results i.e. "difference" of the query or are the results just displayed on screen? thanks

with interpretation a disadvantage is that it is inefficient in that each time a loop is to be executed by the program it must be compiled each time so as incremental compilation compiles some and interprets other parts, does this mean that inc comp will keep this loop compiled when used again...

does colorimetry act on the principles AAS does (wavelengths, etc), just in a solution and without the flame?

i am doing my major and i have a problem i need help with vertical scrollbars. i need one to scroll my form because i NEED alot of data on one page but i dont want the form to be really long in height. I have added a frame and got the scrollbar to scroll that frame so i have placed 3/4 of my...

does an analysis report provide a comprehensive description on just one of the solutions that were breifly described in the feasibility study, or does it comprehensively describe all of the possible solutions thankssssssssssss

when i do the 751/256 i get 2.93359375 waa? i realised that if i push the fraction button it turns out to be: 2 r239/256 i dont understand what im doing tho???

ah k kool thanks heaps man