Post by: Studyinghard on February 17, 2010, 06:39:21 pm
The solutions dont give a good answer. Any one? :)
Post by: m@tty on February 17, 2010, 08:00:25 pm
Post by: olly_s15 on February 17, 2010, 08:21:39 pm
This is from heinemann isn't it?
Post by: Studyinghard on February 17, 2010, 08:33:16 pm
You would advertise the percentage of phosphorus to make it seem lower due to phosphate having a higher mass, thus higher percentage, hence making the product seem like there is too much phosphorus for the good of the environment.
This is from heinemann isn't it?
yep heinemann. my teacher mentioned something about centrifugation or somethign along those lines. She spoke so quickly i didnt get a chance to get the answer down
Post by: HungTran2009 on February 17, 2010, 08:34:17 pm
Post by: simonhu81292 on February 17, 2010, 08:42:10 pm
like the percentage of phosphate would be relatively higher compare to phosphorus as an element in that washing powder
Post by: m@tty on February 17, 2010, 08:44:32 pm
as opposed to
Phosphorous=
He is saying not to add the 4 oxygens(~
Post by: Studyinghard on February 17, 2010, 08:48:33 pm
Post by: simonhu81292 on February 17, 2010, 08:50:00 pm
Post by: simonhu81292 on February 17, 2010, 08:51:47 pm
hm ..still dont see the advantage. isnt phosphorous like in a lot of stuff. like DNA and cell membranes etc so that would be helpful in selling.phosphorus is just an single element that has 30.97 molar mass...
i am not sure if there is another phosphorus ... lol.. :2funny:
Post by: m@tty on February 17, 2010, 08:52:06 pm
Post by: simonhu81292 on February 17, 2010, 08:57:52 pm
where have you been?
lol
Post by: superflya on February 17, 2010, 08:58:37 pm
Doesn't? ? ? ... fail... :buck2:
id say use a calc :P
Post by: Studyinghard on February 17, 2010, 09:01:28 pm
Post by: simonhu81292 on February 17, 2010, 09:09:21 pm
i was researching and foound "Due to its high reactivity, phosphorus is never found as a free element in nature on Earth"
so therefore it contradicts what the above have said . .
:(
also (Phosphorus compounds are also widely used in explosives, nerve agents, friction matches, fireworks, pesticides)
not sure if this helps ... but then as everyone said.. showing the percentage of phosphorus would be way lower compare to showing the percentage of phosphate ....
;)
Post by: Studyinghard on February 17, 2010, 09:15:53 pm
I did some research and found that phosphorous is a bad thing to advertise because it is bad for people with kidney disease because it may impair absorption of iron , copper which is important for the body.
Phosphate is also bad to advertise because phosphates are naturally occuring in the enviornment and too much of it is bad thing for the aquatic plants. If there are phosphates that go down our drains and into the waterways we cause ecological imbalance.
Now what olly said can come into play in that phosphorous would display a lower percentage compared to phosphate due to their respective molar mass and a lower number will just be better in display.
Any thoughts :)?
Post by: che0106 on February 17, 2010, 09:20:07 pm
Post by: olly_s15 on February 17, 2010, 09:34:16 pm
Post by: simonhu81292 on February 17, 2010, 09:44:31 pm
problem solved ..
haha ;D
Post by: Mao on February 18, 2010, 01:12:47 am
And people who know the difference between them would know what the %composition relate to regardless of whether it's under phosphate or phosphorus.
:. the more common term is more popular