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Then I must the be the most intelligent person that ever existed on earth:p ...
Then I must the be the most intelligent person that ever existed on earth:p ...- techgeek
- Profile post
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~~jokes?? in here?? really??
And the nerd who made the joke!! Na2, the diatomic sodium! xD never heard- techgeek
- Post #28,437
- Forum: Games and Fun Stuff
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AS Biology quick revision notes :)
Nice ones...Anything for Chemistry? -
I must be punished for sleeping half the day!! My sleep is inversely proportional to number of...
I must be punished for sleeping half the day!! My sleep is inversely proportional to number of days left in exams!!- techgeek
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Maths is hell fun, honestly xD I'm most overconfident in Maths actually
Maths is hell fun, honestly xD I'm most overconfident in Maths actually- techgeek
- Profile post comment
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Chemistry: Post your doubts here!
Notice that before hydrolysis, we have total 5 alcohols, one primary alcohol, the one projecting upwards on top left, and the other 4 are all primary, because all of them are bonded to a carbon which, in turn, is bonded to another carbon. After hydrolysis, the Cls will be replaced by OH, our... -
Chemistry: Post your doubts here!
Where is your K2SO4 formed? I guess you should start writing the way mark scheme advises us cauz it's kinda confusing :p -
Salt/Qualitative Analysis for P3 Chemistry
Should we always expect SO2 to be given off, if we are adding concentrated sulfuric acid? And how can we quickly identify a gas? I mean I realize a gas is given off after it is given off, so should I test for it by doing the same thing again? -
probably, I take Chem, bio and Maths, but I'm kinda overconfident! xD and I have to convince...
probably, I take Chem, bio and Maths, but I'm kinda overconfident! xD and I have to convince myself every day, that I don't know that much!- techgeek
- Profile post comment
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oh :p, can I know the secret of your stress? What makes you stressed? to me, nothing motivates...
oh :p, can I know the secret of your stress? What makes you stressed? to me, nothing motivates. Seriously, I get motivated for just a day or two, and then the same lazy again :p- techgeek
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Saly Elkady sure, anytime! but I would rather like to be a little stressed, to study better :p
Saly Elkady sure, anytime! but I would rather like to be a little stressed, to study better :p- techgeek
- Profile post comment
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Haha, then we are all in the same boat , and that's kinda satisfying xD
Haha, then we are all in the same boat , and that's kinda satisfying xD- techgeek
- Profile post comment
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15 DAYS!! and I am so relaxed! Where is my adrenaline?? Something is seriously wrong or right...
15 DAYS!! and I am so relaxed! Where is my adrenaline?? Something is seriously wrong or right with me- techgeek
- Profile post
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Chemistry: Post your doubts here!
yep, they are alright! The main thing is The alkene should have a double bond in between, which you drew right, and the number of carbons should be same which is also okay...The ketone also has it's functional group all fine and carbon atoms too. It doesn't matter how much we rotate it, or draw... -
Chemistry: Post your doubts here!
I don't think it will work because nitric acid is a strong acid which neutralized MgO, on the other hand KNO3 is almost neutral and is moderately soluble in water. I doubt if it'll react at all and of course to be on the safe side, we'd better write what we already came across in our syllabus -
Chemistry: Post your doubts here!
did you see the mark scheme? -
Mathematics: Post your doubts here!
You are given mean, sd. and that books greater than 29 are large. You can first use normal approximation to find the probability of the books that are larger than 29 cm. The answer you get is actually the success, p of getting a book which is large. q=1-p with p, q and n as 8, you can simply... -
Mathematics: Post your doubts here!
For g-1 (3), we first need g-1 (x) first. To find that, we first make x the subject instead of y. g(x) = 4 -3 sinx y = 4 - 3 sin x x = (4-y) / 3 but this is g^-1 y not g-1 (x), replace y with x in the formula we made and we'd get g-1 (x) g-1 (x) = (4-x)/3 g-1 (3) = sin-1 (4 - 3)/4 = sin-1... -
Mathematics: Post your doubts here!
Collect the information given: probability that children jump higher than 127 cm is 8/10 = 0.8 probability that children jump higher than 135 cm is 1/3= 0.333 Applying normal distribution as usual: for 127 cm: P (X> 127) = 1 - ϕ (127-μ) /σ 0.8 = 1 - ϕ (127-μ) /σ...