Discussion in 'Cambridge O Levels' started by Nibz, May 24, 2011.
I'm glad that it helped Just pray for me please, i have my atp paper tomorrow
Can anyone describe Fermentation?
how to learn electrolysis by heart ?????? plzzzzzz helppp
i want to ask about the question that came yesterday in 0620/11 chemistry
which compounds gives the three elements nitrogen pottasium and phosphorous ?
i think it was kno3 and NH3PO4?
please i want an answer?
Why is this pinned, the atp is over
please i want to ask a question
all of you take chemistry ana all of its marks is 160 or 18o bio and chemistry
but when you open xtreme papers to see the expectations to get the star ana A and B its overall marks is from 200 caz he added paper 5
so can any one tell me how can i know the expectation to get star but from 160
i tried to make ratio
so can any one tell me how can know that expectations ?
indicators acid base
litmus = red blue
phenopthalien = colourless pink
methyl orange = red / pink yellow
Well its Nitrogen Dioxide..which is a poisonous gas. It reacts to form ozone which causes irritation and can damage lungs..right???
You got it all mixed up
Yes, nitrogen is harmless but nitrogen dioxide is a poisonous brown gas with a pungent smell.
Ozone is a gas that is formed by photochemical reactions. It reacts with oxides of nitrogen to form photochemical smog which causes respiratory problems/irratation.
THANKS JAZAKALLAH KHAIR SO MUCH I HAV IGCSE EXAMS THIS WEEK AND THE NEXT. MAY ALLAH GRANT YOU A PLACE IN JANNAH TUL FIRDOUS. BARAKALLAH FEEK. XD
What if I am bald
Can swimming goggles work?
Separate names with a comma.