Australia's Science Forum

hi,

1cm copper metal (copper sheet) cover with nitric acid, put the lid on
[color=#BF0000]FUME CUPBOARD ONLY[/color]

hi
you can use this one

hi,
I do have step by step instruction how to do labels but file is to big and if you are interested I can email it to you

Hi If you have access to ChemWatch use it if not, you can type chemical name into search engine followed by MSDS and manufacturer name. MSDS are valid 5 years from issue date not print date and should be manufacture specific (e.g. no frills dishwasher detergent and Palmolive need different MSDS's) :?

Hi Mother Are you sure that you want test chlorides. :unsure: As far as I know standard soap solution test is used for testing water hardness if this is what you need info can be found on this website http://www.uq.edu.au/_School_Science_Lessons/topic12D.html#12.13.0 scroll down to 12.13.10 Test for...

hi rainbow-sky,

As far as I know to make peptonized milk you need to use panapepton (pepton) powder
Southern biological has it and the code is:
MED 8.10 it cost $47.30 per 100gr
to prepare, just follow instructions

hi
you can order through Serrata item number:1038059 AR 500gr $42.53 or 1038058 LR$18.90
+ GST

hi, It could be iron and manganese ppt. :unsure: If dam is deep then you can not see discolouration but once exposed to air iron and manganese oxidising and give red brown solids. If you want to be sure then test your water for hardness or do it ,stain clothing (white cotton cloth washed in the water.

hi,
try some of these
http://www.unitednuclear.com/experindex.htm

Hi If you have access to ChemWatch, make sure that you are in advance mode, On the left side of your screen you have option suppliers MSDS, around 300 different ones), chose which one you need. If not here is link http://esvc000946.wic014u.server-web.com/MSDS/1CH6J.pdf http://esvc000946.wic014u.serv...

Hi, Depends what your teacher wants to do, if she wants to colour chromosomes the best and easiest way is with a onion, but for asexual reproduction anything will do (tulip bulb, potato, African violet) Cutting – Cutting the stem, leaf, or root and placing it in water, soil, or hormones stimu...

Hi, As far as I know if you doing experiment as per book, risk assessment is already done (only in the case of injury has to be revised). If experiment are designed by teacher then risk assessment is filled in by teacher ONLY. Risk assessment is valid 5 years, if any injury has to be revised. Maybe ...

hi Lis, Nitric acid is oxidiser at room temperature therefore very reactive. As you said, it should be kept away from acetic acid which is combustible liquid. Nitric should be stored away from others in a separate tray. Segregate oxidizing acids (nitric, perchloric, chromic acid, chromerge) from org...

hi,
Acids, except nitric, should be stored in an acid cabinet, separate from other inorganic chemicals. Store nitric acid away from other acids unless the acid cabinet provides a separate compartment for nitric.

hi,
Calcium oxide reacts violently with water as you already know, but according to MSDS it should be separated from strong acids and oxidizers and it is compatible with all others. If not sure always use ChemWatch. (Mini MSDS's are great source of quick information).

hi, http://cleaning.lifetips.com/faq/43492/0/how-do-i-remove-a-white-out-stain/index.html Wite Out Correction Fluid Stain Removal from Clothing You should be able to remove a White Out stain by using paint thinner or isopropyl (rubbing) alcohol. Be sure to test on the item in a non-visible area befo...

Fe(s) + CuSO4(aq) = FeSO4(aq) + Cu(s)
when copper(II) sulfate reacts with Iron, Fe metal goes into the solution and the metal(Cu) is formed upon reaction. this is a metal displacement reaction, where the more reactive metal(Fe) displaces the les reactive metal(Cu).

hi hel,
I think they are as good as person using it.

hi
read this
http://www.health.vic.gov.au/environmen ... ercury.pdf

hi, are you sure you need 1M solution, recomended bench strength is 0.1M Aluminium sulfate (18H2O): Molecular weight: 666.45 Strength: 1M Volume 0.5L 666.45*1*0.5 =333.225gr Aluminium Sulfate (16 H2O)342.1 342.1*1*.5 = 171.05gr , Dissolve Aluminium sulfate in distil water and make up to 0.5L (or as ...