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do we need to know how to distinguish different types of alchol? i thought we only needed to know how to distinguish alchol from other types of hypdrocarbons.

yes it is destructive as destructive testing is defined by causing any changes to a sample

hey maveric31 is that question u wrote from an actual chemistry paper? coz i dont see any dotpoint about structural formula of sucrose in the syllabus

Does anyone have solutions for this paper? I need solution for forensic chemistry in particular can anyone upload the solution? thanks in advance

sorry, i dont have answer for ur question but do we need to know and draw structual formulas for carbohydrates? i have never come across any questions asking that specifically about structual formula of fructose or any carbohydrates.

i need help with understanding how High Performance Liquid Chromatography(HPLC) works. ive got a note saying: the mixture is forced through a column by liquid at high pressure, which decreases the time the separated components remain on the stationary phase and thus the time they ahve to...

ok, thanks for your applies but can we make it clear? it seems like everyone agrees on the fact that increased intensity of light hitting a metal increases emitted photocurrent what about increased frequency of light hitting a metal? does it increase or have no effect (no difference) on...

Thank you :) But im screwed if its aksed in multiple choice. lol I'll just have to assume the idensity as the number of photons in a wave then thanks anyway

thanks again :) so the answer really depends on what the question means by the 'intensity'? if the intensity used here means radiant energy per unit time, then higher frequency wud have less photons, thus less photocurrent? and if the intensity means the number of photons in the light...

thanks for the reply first of all but both texts are referring to the change in the incident light here is the actual question tat started my confusion A beam of monochromatic light is shone onto a device to study the photoelectric effect. In the first part of the experiment, while the...

its about photocurrent produced by the photoelectric effect assuming the original emr had enough energy to cause the photoelectric effect wud the same emr (same intensity) with higher frequency increase or decrease the photocurrent? one book says higher frequency wud result in less...

tat is exactly wat i wanted to know and it is well explained so thanks ybrady

do we have to do a poem for 2009 HSC? ive been talkin to my friends from other schools and they say they all do a poetry ive asked my teacher and she said no but she hasnt been teachin for long so just to make sure tat i dont screw up my HSC anyone not doing a poem for their ESL?