Edexcel Unit 5:Transition Metals and Organic Chemistry 6CH05 (15th June 2015)

So, I have been trying to solve this problem using molar volumes and can't think of another way of doing it. I would really appreciate it if someone could explain why the answer is D.


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Surely, the answer is B?

Has anyone done the June 2014 paper?

Yes, I found it a lot harder than the other ones I have done!

Can anyone explain question 5(b) to me? Or have any resources for it! Thanks
http://qualifications.pearson.com/content/dam/pdf/A%20Level/Chemistry/2013/Exam%20materials/6CH05_01_que_20110624.pdf
The answer's D btw!

I completely failed it i hope they're nice to us this year

Same here! I hope so too, they can't have two harsh papers in two years, surely!

apparently last year they had 2 really bad units in a row, so yes i hope they're nice to us this year

Yeah, I hope they're not cruel enough to do that this year too! What do you need in chemistry? Luckily I don't need it for my course which takes a lot of pressure off!

Only a B, its not too much to ask for so chemistry isn't part of your offer? i wouldn't bother with it if i were you

No it's only my 4th subject so it wasn't included in any offers, thankfully! I'm predicted a B so I'm going for the same as you. Good luck -we can do this!

Could anyone help me out on this question. Please.
In the mass spectrum of an organic compound, the molecular ion occurs at m/e = 86.
Which of the following could be the empirical formula of the compound?
A C6H14
B C5H10N
C C5H12O
D C5H7F

The answer is C. But whyyyyyyyy???

are you sure its C? and not A?

Yeah it's C. It's not A because C6H14 can be further simplified to give C3H7.