Qualification > Queries
All doubts here!
wassup:
--- Quote from: The Dude 321 on October 22, 2009, 07:25:03 pm ---If anyone needs any help, pls tell me, i have just a little but more time, please tell me uf u need help with any of the subjects...
--- End quote ---
can u explain me d concept of oxidation no. and nd parallelogram law (by sin, cos).
Saladin:
Oxidation is the loss of elections and the gain of oxygen. The oxidation number is the same as the valence number, basically the value of the charge that an ion of the element has. Thats really it. Now, if the oxidation number is negative, then it can still lose electrons, thus it can reduce other elements or atoms, thus they are called reducing agents. About the paralellogram law, u dont need to know that for the IG using sin and cos...
Ghost Of Highbury:
--- Quote from: wassup on October 22, 2009, 07:28:36 pm ---can u explain me d concept of oxidation no. and nd parallelogram law (by sin, cos).
--- End quote ---
for the oxidation thingy
check this- a sample solved question (all details mentioned)
https://studentforums.biz/index.php/topic,3773.msg112331/topicseen.html#msg112331
for the parallelogram thingy - i advise u to use the scale (1cm = 10N) method to solve it instead of using trigonometry.
wassup:
--- Quote from: The Dude 321 on October 22, 2009, 07:32:38 pm ---Oxidation is the loss of elections and the gain of oxygen. The oxidation number is the same as the valence number, basically the value of the charge that an ion of the element has. Thats really it. Now, if the oxidation number is negative, then it can still lose electrons, thus it can reduce other elements or atoms, thus they are called reducing agents. About the paralellogram law, u dont need to know that for the IG using sin and cos...
--- End quote ---
Can u plz looak at q1 from physics o level paper 2 oct/nov 08 n temme how to do it.
Saladin:
http://www.dineshbakshi.com/igcse-gcse-economics.html
This shud help in eco.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version