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Chemistry: Post your doubts here!

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My practical is just after the P2 . I'm hoping the examiners dont give horrifying questions on Organic .:D
Ah yes I wanted 33 but I chose 34 since I'll have arabic as first language on that day plus I have a week where in 4 days I have 5 board exams so I wasn't ready to add one more to the list :")
Focus on your theory part for now and just don't be scared I think chem P2 will be a bit hard this year,
 
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Ah yes I wanted 33 but I chose 34 since I'll have arabic as first language on that day plus I have a week where in 4 days I have 5 board exams so I wasn't ready to add one more to the list :")
Focus on your theory part for now and just don't be scared I think chem P2 will be a bit hard this year,
Threshold around 43-44 would be fine depending on how well students do
 
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Hi, I really need help with this question!
Edexcel A level chemistry Jan 2015 IAL WCH03/01
Q3 b (iii)
Why is uncertainty value times by 2?
Thanks
 
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Hello, I need help for question 4 d iii) from Oct/Nov 2018 paper 21... Suggest a structure for Y...

Screen Shot 2019-05-09 at 14.15.04.png Screen Shot 2019-05-09 at 14.14.33.png

Here is what the mark scheme says:
Screen Shot 2019-05-09 at 14.15.58.png

Can someone tell me how you get this answer? Why is it an ester group, and also why is it cyclic?
 
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ER says "A common error was to not show electrolysis apparatus rather an attempt at an electrochemical cell."
Can Anybody draw electrolysis apparatus?
 
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